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136 results on '"Stammerjohn, S."'

1. STATE OF THE CLIMATE IN 2019

Author

BLUNDEN, J., ARNDT, D. S., Dunn, R. J. H., Stanitski, D. M., Gobron, N., Willett, K. M., Lumpkin, Rick, Diamond, H. J., Schreck, C. J., Richter-Menge, J., Druckenmiller, M. L., Scambos, T., Stammerjohn, S., Bissolli, P., Ganter, C., Li, T., Mekonnen, A., and Sánchez-Lugo, A.

Published
2020

2. Tropical teleconnection impacts on Antarctic climate changes

Author

Li, X, Cai, W, Meehl, GA, Chen, D, Yuan, X, Raphael, M, Holland, DM, Ding, Q, Fogt, RL, Markle, BR, Wang, G, Bromwich, DH, Turner, J, Xie, SP, Steig, EJ, Gille, ST, Xiao, C, Wu, B, Lazzara, MA, Chen, X, Stammerjohn, S, Holland, PR, Holland, MM, Cheng, X, Price, SF, Wang, Z, Bitz, CM, Shi, J, Gerber, EP, Liang, X, Goosse, H, Yoo, C, Ding, M, Geng, L, Xin, M, Li, C, Dou, T, Liu, C, Sun, W, Wang, X, and Song, C

Abstract

Over the modern satellite era, substantial climatic changes have been observed in the Antarctic, including atmospheric and oceanic warming, ice sheet thinning and a general Antarctic-wide expansion of sea ice, followed by a more recent rapid loss. Although these changes, featuring strong zonal asymmetry, are partially influenced by increasing greenhouse gas emissions and stratospheric ozone depletion, tropical–polar teleconnections are believed to have a role through Rossby wave dynamics. In this Review, we synthesize understanding of tropical teleconnections to the Southern Hemisphere extratropics arising from the El Niño–Southern Oscillation, Interdecadal Pacific Oscillation and Atlantic Multidecadal Oscillation, focusing on the mechanisms and long-term climatic impacts. These teleconnections have contributed to observed Antarctic and Southern Ocean changes, including regional rapid surface warming, pre-2015 sea ice expansion and its sudden reduction thereafter, changes in ocean heat content and accelerated thinning of most of the Antarctic ice sheet. However, due to limited observations and inherent model biases, uncertainties remain in understanding and assessing the importance of these teleconnections versus those arising from greenhouse gases, ozone recovery and internal variability. Sustained pan-Antarctic efforts towards long-term observations, and more realistic dynamics and parameterizations in high-resolution climate models, offer opportunities to reduce these uncertainties.

Published
2021

3. STATE OF THE CLIMATE IN 2018

Author

BLUNDEN, J., ARNDT, D. S., Arndt, D. S., Blunden, J., Dunn, R. J. H., Stanitski, D. M., Gobron, N., Willett, K. M., Diamond, H. J., Schreck, C. J., Richter-Menge, J., Osborne, E., Druckenmiller, M., Jeffries, M. O., Scambos, T., Stammerjohn, S., Bissolli, P., Ganter, C., Li, T., Mekonnen, A., and Sánchez-Lugo, A.

Published
2019

4. STATE OF THE CLIMATE IN 2017

Author

BLUNDEN, J., HARTFIELD, G., ARNDT, D. S., DUNN, R. J. H., TYE, M. R., BLENKINSOP, S., DONAT, M., DURRE, I., ZIESE, M., COOPER, O. R., HEMMING, D. L., ABERNETHY, R., ARMITAGE, C., BOLMGREN, K., MYNENI, R., PARK, T., RICHARDSON, A. D., RUTISHÄUSER, T., SPARKS, T. H., THACKERAY, S. J., EAKIN, C. M., LIU, G., GOMEZ, A. M., DE LA COUR, J. L., HERON, S. F., SKIRVING, W. J., GEIGER, E. F., MARSH, B. L., TIRAK, K. V., STRONG, A. E., YOON, H., WIDLANSKY, M. J., THOMPSON, P. R., KLOTZBACH, P. J., VELDEN, C. S., ROTH, D. M., NIELSEN-GAMMON, J. W., OSBORNE, E., CRONIN, T., FARMER, J., BEHE, C., DANIEL, R., YORK, A., BHATT, U., THOMAN, R., ZIEL, R., SWART, S., CAMPBELL, E. C., HEUZÉ, C. H., JOHNSON, K., LIESER, J. L., MASSOM, R., MAZLOFF, M., MEREDITH, M., REID, P., SALLÉE, J.-B., STAMMERJOHN, S., MARTINEZ-SÁNCHEZ, O., TAKAHASHI, K., ALIAGA-NESTARES, V., AVALOS, G., BOUCHON, M., CASTRO, A., CRUZADO, L., DEWITTE, B., GUTIÉRREZ, D., LAVADO-CASIMIRO, W., MARENGO, J., MARTÍNEZ, A. G., MOSQUERA-VÁSQUEZ, K., QUISPE, N., ZHU, Z., LI, T., TOGAWA, H., TOBIN, S., and JACOBS, S. J.

Published
2018

8. Response of Onshore Oceanic Heat Supply to Yearly Changes in the Amundsen Sea Icescape (Antarctica).

Author

St‐Laurent, P., Stammerjohn, S. E., and Maksym, T.

Subjects
ICE shelves, ANTARCTIC ice, OCEANOGRAPHIC observations, ICE sheets, REMOTE-sensing images, SUBGLACIAL lakes, GLACIERS, HEAT transfer
Abstract

The heat transfer between the warm oceanic water and the floating portion of the Antarctic ice sheet (the ice shelves) occurs in a dynamic environment with year‐to‐year changes in the distribution of icebergs and fast‐ice (the “icescape”). Dramatic events such as the collapse of glacier tongues are apparent in satellite images but oceanographic observations are insufficient to capture the synoptic impact of such events on the supply of oceanic heat to ice shelves. This study uses a 3D numerical model and semi‐ idealized experiments to examine whether the current high melting rates of ice shelves in the Amundsen Sea could be mitigated by certain icescape configurations. Specifically, the experiments quantify the impacts on oceanic heat supply of presence/absence of the Thwaites Glacier Tongue, Bear Ridge Iceberg Chain, tabular iceberg B22, and fast‐ice cover seaward of Pine Island Ice Shelf (PIS). The experiments reveal that future changes in the coastal icescape are unlikely to reverse the high ice shelf melting rates of the Amundsen Sea, and that icescape changes between 2011 and 2022 actually enhanced them slightly. Ice shelves such as Crosson and Thwaites are found to have multiple viable sources of oceanic heat whose relative importance may shift following icescape reconfigurations but the overall heat supply remains high. Similarly, the formation of a fast‐ice cover seaward of PIS slows down the cavity circulation (by 7%) but does not reduce its heat supply. [ABSTRACT FROM AUTHOR]

Published
2024
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9. 6. ANTARCTICA

Author

Scambos, T. and Stammerjohn, S.

Subjects
Antarctica -- Natural history, Sea ice -- Thermal properties, Wind pressure -- Measurement, Antarctic Oscillation -- Observations, Atmospheric temperature -- Measurement, Business, Earth sciences
Abstract

a. Overview--T. Scambos and S. Stammerjohn Eds. Last year we reported on an unusual Antarctic climate and sea ice anomaly that developed during late winter-early spring 2016 (Stammerjohn and Scambos [...]

Published
2018

10. An abrupt transition in Antarctic sea ice–ocean system

Author

Haumann, F., Massonnet, F., Holland, P., Bushuk, M., Maksym, T., Hobbs, W., Meredith, M., Cerovečki, I., Lavergne, T., Meier, W., Raphael, M., and Stammerjohn, S.

Abstract

Over the past decade, Antarctic sea ice extent exhibited a sequence of record maxima, followed by a rapid decline in 2015/16, and record minima since. In this presentation, we show that this sudden and remarkable ice loss marks an abrupt transition from a high to a low ice state that cannot be explained by year-to-year variability. Instead, it is most likely associated with a longer term variability arising from ice–ocean feedbacks. The abrupt transition was preceded by an increase in persistence and variance of the sea ice anomalies, an increasing upper Southern Ocean density stratification, and an accumulation of heat at the subsurface; suggesting a decoupling of the surface from the subsurface ocean. During this period, the sea ice anomalies shifted from being structured predominantly regionally and seasonally to a largely circumpolar and interannual regime. In 2015/16, the upper ocean density stratification in the ice-covered region suddenly weakened, leading to a release of the heat from the subsurface, contributing to the sea ice decline during winter. Our analysis suggests that the sudden sea ice loss in 2015/16, and the persisting low ice conditions since, arose from a systematic change in the physical state of the coupled circumpolar ice–ocean system. This change will have wide implications for global climate, ecosystems, and the Antarctic Ice Sheet., The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)

Published
2023
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14. Modeling of the Influence of Sea Ice Cycle and Langmuir Circulation on the Upper Ocean Mixed Layer Depth and Freshwater Distribution at the West Antarctic Peninsula

Author

Schultz, C, Doney, SC, Zhang, WG, Regan, H, Holland, P, Meredith, MP, Stammerjohn, S, Schultz, C, Doney, SC, Zhang, WG, Regan, H, Holland, P, Meredith, MP, and Stammerjohn, S

Abstract

©2020. The Authors. The Southern Ocean is chronically undersampled due to its remoteness, harsh environment, and sea ice cover. Ocean circulation models yield significant insight into key processes and to some extent obviate the dearth of data; however, they often underestimate surface mixed layer depth (MLD), with consequences for surface water-column temperature, salinity, and nutrient concentration. In this study, a coupled circulation and sea ice model was implemented for the region adjacent to the West Antarctic Peninsula, a climatically sensitive region which has exhibited decadal trends towards higher ocean temperature, shorter sea ice season, and increasing glacial freshwater input, overlain by strong interannual variability. Hindcast simulations were conducted with different air-ice drag coefficients and Langmuir circulation parameterizations to determine the impact of these factors on MLD. Including Langmuir circulation deepened the surface mixed layer, with the deepening being more pronounced in the shelf and slope regions. Optimal selection of an air-ice drag coefficient also increased modeled MLD by similar amounts and had a larger impact in improving the reliability of the simulated MLD interannual variability. This study highlights the importance of sea ice volume and redistribution to correctly reproduce the physics of the underlying ocean, and the potential of appropriately parameterizing Langmuir circulation to help correct for biases towards shallow MLD in the Southern Ocean. The model also reproduces observed freshwater patterns in the West Antarctic Peninsula during late summer and suggests that areas of intense summertime sea ice melt can still show net annual freezing due to high sea ice formation during the winter.

Published
2022

15. Modeling of the Influence of Sea Ice Cycle and Langmuir Circulation on the Upper Ocean Mixed Layer Depth and Freshwater Distribution at the West Antarctic Peninsula

Author

Schultz, C., Doney, S. C., Zhang, W. G., Regan, H., Holland, P., Meredith, M. P., Stammerjohn, S., Schultz, C., Doney, S. C., Zhang, W. G., Regan, H., Holland, P., Meredith, M. P., and Stammerjohn, S.

Abstract

©2020. The Authors. The Southern Ocean is chronically undersampled due to its remoteness, harsh environment, and sea ice cover. Ocean circulation models yield significant insight into key processes and to some extent obviate the dearth of data; however, they often underestimate surface mixed layer depth (MLD), with consequences for surface water-column temperature, salinity, and nutrient concentration. In this study, a coupled circulation and sea ice model was implemented for the region adjacent to the West Antarctic Peninsula, a climatically sensitive region which has exhibited decadal trends towards higher ocean temperature, shorter sea ice season, and increasing glacial freshwater input, overlain by strong interannual variability. Hindcast simulations were conducted with different air-ice drag coefficients and Langmuir circulation parameterizations to determine the impact of these factors on MLD. Including Langmuir circulation deepened the surface mixed layer, with the deepening being more pronounced in the shelf and slope regions. Optimal selection of an air-ice drag coefficient also increased modeled MLD by similar amounts and had a larger impact in improving the reliability of the simulated MLD interannual variability. This study highlights the importance of sea ice volume and redistribution to correctly reproduce the physics of the underlying ocean, and the potential of appropriately parameterizing Langmuir circulation to help correct for biases towards shallow MLD in the Southern Ocean. The model also reproduces observed freshwater patterns in the West Antarctic Peninsula during late summer and suggests that areas of intense summertime sea ice melt can still show net annual freezing due to high sea ice formation during the winter.

Published
2022

16. Seasonal Dynamics of Dissolved Iron on the Antarctic Continental Shelf: Late-Fall Observations From the Terra Nova Bay and Ross Ice Shelf Polynyas

Author

Sedwick, P. N., Sohst, B. M., O’Hara, C., Stammerjohn, S. E., Loose, B., Dinniman, M. S., Buck, N. J., Resing, J. A., Ackley, S. F., Sedwick, P. N., Sohst, B. M., O’Hara, C., Stammerjohn, S. E., Loose, B., Dinniman, M. S., Buck, N. J., Resing, J. A., and Ackley, S. F.

Abstract

Over the Ross Sea shelf, annual primary production is limited by dissolved iron (DFe) supply. Here, a major source of DFe to surface waters is thought to be vertical resupply from the benthos, which is assumed most prevalent during winter months when katabatic winds drive sea ice formation and convective overturn in coastal polynyas, although the impact of these processes on water-column DFe distributions has not been previously documented. We collected hydrographic data and water-column samples for trace metals analysis in the Terra Nova Bay and Ross Ice Shelf polynyas during April–May 2017 (late austral fall). In the Terra Nova Bay polynya, we observed intense katabatic wind events, and surface mixed layer depths varied from ∼250 to ∼600 m over lateral distances <10 km; there vertical mixing was just starting to excavate the dense, iron-rich Shelf Waters, and there was also evidence of DFe inputs at shallower depths in the water column. In the Ross Ice Shelf polynya, wind speeds were lower, mixed layers were <300 m deep, and DFe distributions were similar to previous, late-summer observations, with concentrations elevated near the seafloor. Corresponding measurements of dissolved manganese and zinc, and particulate iron, manganese, and aluminum, suggest that deep DFe maxima and some mid-depth DFe maxima primarily reflect sedimentary inputs, rather than remineralization. Our data and model simulations imply that vertical resupply of DFe in the Ross Sea occurs mainly during mid-late winter, and may be particularly sensitive to changes in the timing and extent of sea ice production.

Published
2022

17. Modeling of the Influence of Sea Ice Cycle and Langmuir Circulation on the Upper Ocean Mixed Layer Depth and Freshwater Distribution at the West Antarctic Peninsula.

Author

Schultz, C., Doney, S. C., Zhang, W G., Regan, Heather, Holland, Paul, Meredith, Michael, Stammerjohn, S., Schultz, C., Doney, S. C., Zhang, W G., Regan, Heather, Holland, Paul, Meredith, Michael, and Stammerjohn, S.

Abstract

The Southern Ocean is chronically undersampled due to its remoteness, harsh environment, and sea ice cover. Ocean circulation models yield significant insight into key processes and to some extent obviate the dearth of data; however, they often underestimate surface mixed layer depth (MLD), with consequences for surface water-column temperature, salinity, and nutrient concentration. In this study, a coupled circulation and sea ice model was implemented for the region adjacent to the West Antarctic Peninsula, a climatically sensitive region which has exhibited decadal trends towards higher ocean temperature, shorter sea ice season, and increasing glacial freshwater input, overlain by strong interannual variability. Hindcast simulations were conducted with different air-ice drag coefficients and Langmuir circulation parameterizations to determine the impact of these factors on MLD. Including Langmuir circulation deepened the surface mixed layer, with the deepening being more pronounced in the shelf and slope regions. Optimal selection of an air-ice drag coefficient also increased modeled MLD by similar amounts and had a larger impact in improving the reliability of the simulated MLD interannual variability. This study highlights the importance of sea ice volume and redistribution to correctly reproduce the physics of the underlying ocean, and the potential of appropriately parameterizing Langmuir circulation to help correct for biases towards shallow MLD in the Southern Ocean. The model also reproduces observed freshwater patterns in the West Antarctic Peninsula during late summer and suggests that areas of intense summertime sea ice melt can still show net annual freezing due to high sea ice formation during the winter.

Published
2020

18. Sea-ice production and air/ice/ocean/biogeochemistry interactions in the Ross Sea during the PIPERS 2017 autumn field campaign

Author

Ackley, S. F., Stammerjohn, S., Maksym, T., Smith, M., Cassano, J., Guest, P., Tison, J.-L., Delille, B., Loose, Brice, Sedwick, P., DePace, L., Roach, L., Parno, J., Ackley, S. F., Stammerjohn, S., Maksym, T., Smith, M., Cassano, J., Guest, P., Tison, J.-L., Delille, B., Loose, Brice, Sedwick, P., DePace, L., Roach, L., and Parno, J.

Abstract

The Ross Sea is known for showing the greatest sea-ice increase, as observed globally, particularly from 1979 to 2015. However, corresponding changes in sea-ice thickness and production in the Ross Sea are not known, nor how these changes have impacted water masses, carbon fluxes, biogeochemical processes and availability of micronutrients. The PIPERS project sought to address these questions during an autumn ship campaign in 2017 and two spring airborne campaigns in 2016 and 2017. PIPERS used a multidisciplinary approach of manned and autonomous platforms to study the coupled air/ice/ocean/biogeochemical interactions during autumn and related those to spring conditions. Unexpectedly, the Ross Sea experienced record low sea ice in spring 2016 and autumn 2017. The delayed ice advance in 2017 contributed to (1) increased ice production and export in coastal polynyas, (2) thinner snow and ice cover in the central pack, (3) lower sea-ice Chl-a burdens and differences in sympagic communities, (4) sustained ocean heat flux delaying ice thickening and (5) a melting, anomalously southward ice edge persisting into winter. Despite these impacts, airborne observations in spring 2017 suggest that winter ice production over the continental shelf was likely not anomalous.

Published
2020

20. Sea-ice production and air/ice/ocean/biogeochemistry interactions in the Ross Sea during the PIPERS 2017 autumn field campaign

Author

Ackley, S. F., primary, Stammerjohn, S., additional, Maksym, T., additional, Smith, M., additional, Cassano, J., additional, Guest, P., additional, Tison, J.-L., additional, Delille, B., additional, Loose, B., additional, Sedwick, P., additional, DePace, L., additional, Roach, L., additional, and Parno, J., additional

Published
2020
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22. State of the Climate in 2018

Author

Arndt, D. S., Blunden, J., Dunn, R. J. H., Stanitski, D. M., Gobron, N., Willett, K. M., Sanchez-lugo, A., Berrisford, P., Morice, C., Nicolas, Jp, Carrea, L., Woolway, R. I., Merchant, C. J., Dokulil, M. T., De Eyto, E., Degasperi, C. L., Korhonen, J., Marszelewski, W., May, L., Paterson, A. M., Rusak, J. A., Schladow, S. G., Schmid, M., Verburg, P., Watanabe, S., Weyhenmeyer, G. A., King, A. D., Donat, M. G., Christy, J. R., Po-chedley, S., Mears, C. R., Haimberger, L., Covey, C., Randel, W., Noetzli, J., Biskaborn, B. K., Christiansen, H. H., Isaksen, K., Schoeneich, P., Smith, S., Vieira, G., Zhao, L., Streletskiy, D. A., Robinson, D. A., Pelto, M., Berry, D. I., Bosilovich, M. G., Simmons, A. J., Mears, C., Ho, S. P., Bock, O., Zhou, X., Nicolas, J, Vose, R. S., Adler, R., Gu, G., Becker, A., Yin, X, Tye, M. R., Blenkinsop, S., Durre, I., Ziese, M., Collow, A. B. Marquardt, Rustemeier, E., Foster, M. J., Di Girolamo, L., Frey, R. A., Heidinger, A. K., Sun-mack, S., Phillips, C., Menzel, W. P., Stengel, M., Zhao, G., Kim, H., Rodell, M., Li, B., Famiglietti, J. S., Scanlon, T., Van Der Schalie, R., Preimesberger, W., Reimer, C., Hahn, S., Gruber, A., Kidd, R., De Jeu, R. A. M., Dorigo, W. A., Barichivich, J., Osborn, T. J., Harris, I., Van Der Schrier, G., Jones, P. D., Miralles, D. G., Martens, B., Beck, H. E., Dolman, A. J., Jimenez, C., Mccabe, M. F., Wood, E. F., Allan, R., Azorin-molina, C., Mears, C. A., Mcvicar, T. R., Mayer, M., Schenzinger, V., Hersbach, H., Stackhouse, P. W., Jr., Wong, T., Kratz, D. P., Sawaengphokhai, P., Wilber, A. C., Gupta, S. K., Loeb, N. G., Dlugokencky, E. J., Hall, B. D., Montzka, S. A., Dutton, G., Muhle, J., Elkins, J. W., Miller, Br, Remy, S., Bellouin, N., Kipling, Z., Ades, M., Benedetti, A., Boucher, O., Weber, M., Steinbrecht, W., Arosio, C., Van Der A, R., Frith, S. M., Anderson, J., Coldewey-egbers, M., Davis, S., Degenstein, D., Fioletov, V. E., Froidevaux, L., Hubert, D., Long, C. S., Loyola, D., Rozanov, A., Roth, C., Sofieva, V., Tourpali, K., Wang, R., Wild, J. D., Davis, S. M., Rosenlof, K. H., Hurst, D. F., Selkirk, H. B., Vomel, H., Ziemke, J. R., Cooper, O. R., Flemming, J., Inness, A., Pinty, B., Kaiser, J. W., Van Der Werf, G. R., Hemming, D. L., Garforth, J., Park, T., Richardson, A. D., Rutishauser, T., Sparks, T. H., Thackeray, S. J., Myneni, R., Lumpkin, R., Huang, B., Kennedy, J., Xue, Y., Zhang, H. -m., Hu, C., Wang, M., Johnson, G. C., Lyman, J. M., Boyer, T., Cheng, L., Domingues, C. M., Gilson, J., Ishii, M., Killick, R. E., Monselesan, D., Purkey, S. G., Wijffels, S. E., Locarnini, R., Yu, L., Jin, X., Stackhouse, P. W., Kato, S., Weller, R. A., Thompson, P. R., Widlansky, M. J., Leuliette, E., Sweet, W., Chambers, D. P., Hamlington, B. D., Jevrejeva, S., Marra, J. J., Merrifield, M. A., Mitchum, G. T., Nerem, R. S., Kelble, C., Karnauskas, M., Hubbard, K., Goni, G., Streeter, C., Dohan, K., Franz, B. A., Cetinic, I., Karakoylu, E. M., Siegel, D. A., Westberry, T. K., Feely, R. A., Wanninkhof, R., Carter, B. R., Landschutzer, P., Sutton, A. J., Cosca, C., Trinanes, J. A., Baxter, S., Schreck, C., Bell, G. D., Mullan, A. B., Pezza, A. B., Coelho, C. A. S., Wang, B., He, Q., Diamond, H. J., Schreck, C. J., Blake, E. S., Landsea, C. W., Wang, H., Goldenberg, S. B., Pasch, R. J., Klotzbach, P. J., Kruk, M. C., Camargo, S. J., Trewin, B. C., Pearce, P. R., Lorrey, A. M., Domingues, R., Goni, G. J., Knaff, J. A., Lin, I. -i., Bringas, F., Richter-menge, J., Osborne, E., Druckenmiller, M., Jeffries, M. O., Overland, J. E., Hanna, E., Hanssen-bauer, I., Kim, S. -j., Walsh, J. E., Bhatt, U. S., Timmermans, M. -l., Ladd, C., Perovich, D., Meier, W., Tschudi, M., Farrell, S., Hendricks, S., Gerland, S., Haas, C., Krumpen, T., Polashenski, C., Ricker, R, Webster, M., Stabeno, P. J., Tedesco, M., Box, J. E., Cappelen, J., Fausto, R. S., Fettweis, X., Andersen, J. K., Mote, T., Smeets, C. J. P. P., Van As, D., Van De Wal, R. S. W., Romanovsky, V. E., Smith, S. L., Shiklomanov, N. I., Kholodov, A. L., Drozdov, D. S., Malkova, G. V., Marchenko, S. S., Jella, K. B., Mudryk, L., Brown, R., Derksen, C., Luojus, K., Decharme, B., Holmes, R. M., Shiklomanov, A. I., Suslova, A., Tretiakov, M., Mcclelland, J. W., Spencer, R. G. M., Tank, S. E., Epstein, H., Bhatt, U., Raynolds, M., Walker, D., Forbes, B., Phoenix, G., Bjerke, J., Tommervik, H., Karlsen, S. -r., Goetz, S., Jia, G., Bernhard, G. H., Grooss, J. -u., Ialongo, I., Johnsen, B., Lakkala, K., Manney, G. L., Mueller, R., Scambos, T., Stammerjohn, S., Clem, K. R., Barreira, S., Fogt, R. L., Colwell, S., Keller, L. M., Lazzara, M. A., Reid, P., Massom, R. A., Lieser, J. L., Meijers, A., Sallee, J. -b., Grey, A., Johnson, K., Arrigo, K., Swart, S., King, B., Meredith, M., Mazloff, M., Scardilli, A., Claus, F., Shuman, C. A., Kramarova, N., Newman, P. A., Nash, E. R., Strahan, S. E., Johnson, B., Pitts, M., Santee, M. L., Petropavlovskikh, I., Braathen, G. O., Coy, L., De Laat, J., Bissolli, P., Ganter, C., Li, T., Mekonnen, A., Gleason, K., Smith, A., Fenimore, C., Heim, R. R., Jr., Nauslar, N. J., Brown, T. J., Mcevoy, D. J., Lareau, N. P., Amador, J. A., Hidalgo, H. G., Alfaro, E. J., Calderon, B., Mora, N., Stephenson, T. S., Taylor, M. A., Trotman, A. R., Van Meerbeeck, C. J., Campbell, J. D., Brown, A., Spence, J., Martinez, R., Diaz, E., Marin, D., Hernandez, R., Caceres, L., Zambrano, E., Nieto, J., Marengo, J. A., Espinoza, J. C., Alves, L. M., Ronchail, J., Lavado-casimiro, J. W., Ramos, I., Davila, C., Ramos, A. M., Diniz, F. A., Aliaga-nestares, V., Castro, A. Y., Stella, J. L., Aldeco, L. S., Diaz, D. A. Campos, Misevicius, N., Kabidi, K., Sayouri, A., Elkharrim, M., Mostafa, A. E., Hagos, S., Feng, Z., Ijampy, J. A., Sima, F., Francis, S. D., Tsidu, G. Mengistu, Kruger, A. C., Mcbride, C., Jumaux, G., Dhurmea, K. R., Belmont, M., Rakotoarimalala, C. L., Labbe, L., Rosner, B., Benedict, I., Van Heerwaarden, C., Weerts, A., Hazeleger, W., Trachte, K., Zhu, Z., Zhang, P., Lee, T. C., Ripaldi, A., Mochizuki, Y., Lim, J. -y, Oyunjargal, L., Timbal, B., Srivastava, A. K., Revadekar, J. V., Rajeevan, M., Shimpo, A., Khoshkam, M., Kazemi, A. Fazl, Zeyaeyan, S., Lander, M. A., Mcgree, S., Tobin, S., Bettio, L., Arndt, D. S., Blunden, J., Dunn, R. J. H., Stanitski, D. M., Gobron, N., Willett, K. M., Sanchez-lugo, A., Berrisford, P., Morice, C., Nicolas, Jp, Carrea, L., Woolway, R. I., Merchant, C. J., Dokulil, M. T., De Eyto, E., Degasperi, C. L., Korhonen, J., Marszelewski, W., May, L., Paterson, A. M., Rusak, J. A., Schladow, S. G., Schmid, M., Verburg, P., Watanabe, S., Weyhenmeyer, G. A., King, A. D., Donat, M. G., Christy, J. R., Po-chedley, S., Mears, C. R., Haimberger, L., Covey, C., Randel, W., Noetzli, J., Biskaborn, B. K., Christiansen, H. H., Isaksen, K., Schoeneich, P., Smith, S., Vieira, G., Zhao, L., Streletskiy, D. A., Robinson, D. A., Pelto, M., Berry, D. I., Bosilovich, M. G., Simmons, A. J., Mears, C., Ho, S. P., Bock, O., Zhou, X., Nicolas, J, Vose, R. S., Adler, R., Gu, G., Becker, A., Yin, X, Tye, M. R., Blenkinsop, S., Durre, I., Ziese, M., Collow, A. B. Marquardt, Rustemeier, E., Foster, M. J., Di Girolamo, L., Frey, R. A., Heidinger, A. K., Sun-mack, S., Phillips, C., Menzel, W. P., Stengel, M., Zhao, G., Kim, H., Rodell, M., Li, B., Famiglietti, J. S., Scanlon, T., Van Der Schalie, R., Preimesberger, W., Reimer, C., Hahn, S., Gruber, A., Kidd, R., De Jeu, R. A. M., Dorigo, W. A., Barichivich, J., Osborn, T. J., Harris, I., Van Der Schrier, G., Jones, P. D., Miralles, D. G., Martens, B., Beck, H. E., Dolman, A. J., Jimenez, C., Mccabe, M. F., Wood, E. F., Allan, R., Azorin-molina, C., Mears, C. A., Mcvicar, T. R., Mayer, M., Schenzinger, V., Hersbach, H., Stackhouse, P. W., Jr., Wong, T., Kratz, D. P., Sawaengphokhai, P., Wilber, A. C., Gupta, S. K., Loeb, N. G., Dlugokencky, E. J., Hall, B. D., Montzka, S. A., Dutton, G., Muhle, J., Elkins, J. W., Miller, Br, Remy, S., Bellouin, N., Kipling, Z., Ades, M., Benedetti, A., Boucher, O., Weber, M., Steinbrecht, W., Arosio, C., Van Der A, R., Frith, S. M., Anderson, J., Coldewey-egbers, M., Davis, S., Degenstein, D., Fioletov, V. E., Froidevaux, L., Hubert, D., Long, C. S., Loyola, D., Rozanov, A., Roth, C., Sofieva, V., Tourpali, K., Wang, R., Wild, J. D., Davis, S. M., Rosenlof, K. H., Hurst, D. F., Selkirk, H. B., Vomel, H., Ziemke, J. R., Cooper, O. R., Flemming, J., Inness, A., Pinty, B., Kaiser, J. W., Van Der Werf, G. R., Hemming, D. L., Garforth, J., Park, T., Richardson, A. D., Rutishauser, T., Sparks, T. H., Thackeray, S. J., Myneni, R., Lumpkin, R., Huang, B., Kennedy, J., Xue, Y., Zhang, H. -m., Hu, C., Wang, M., Johnson, G. C., Lyman, J. M., Boyer, T., Cheng, L., Domingues, C. M., Gilson, J., Ishii, M., Killick, R. E., Monselesan, D., Purkey, S. G., Wijffels, S. E., Locarnini, R., Yu, L., Jin, X., Stackhouse, P. W., Kato, S., Weller, R. A., Thompson, P. R., Widlansky, M. J., Leuliette, E., Sweet, W., Chambers, D. P., Hamlington, B. D., Jevrejeva, S., Marra, J. J., Merrifield, M. A., Mitchum, G. T., Nerem, R. S., Kelble, C., Karnauskas, M., Hubbard, K., Goni, G., Streeter, C., Dohan, K., Franz, B. A., Cetinic, I., Karakoylu, E. M., Siegel, D. A., Westberry, T. K., Feely, R. A., Wanninkhof, R., Carter, B. R., Landschutzer, P., Sutton, A. J., Cosca, C., Trinanes, J. A., Baxter, S., Schreck, C., Bell, G. D., Mullan, A. B., Pezza, A. B., Coelho, C. A. S., Wang, B., He, Q., Diamond, H. J., Schreck, C. J., Blake, E. S., Landsea, C. W., Wang, H., Goldenberg, S. B., Pasch, R. J., Klotzbach, P. J., Kruk, M. C., Camargo, S. J., Trewin, B. C., Pearce, P. R., Lorrey, A. M., Domingues, R., Goni, G. J., Knaff, J. A., Lin, I. -i., Bringas, F., Richter-menge, J., Osborne, E., Druckenmiller, M., Jeffries, M. O., Overland, J. E., Hanna, E., Hanssen-bauer, I., Kim, S. -j., Walsh, J. E., Bhatt, U. S., Timmermans, M. -l., Ladd, C., Perovich, D., Meier, W., Tschudi, M., Farrell, S., Hendricks, S., Gerland, S., Haas, C., Krumpen, T., Polashenski, C., Ricker, R, Webster, M., Stabeno, P. J., Tedesco, M., Box, J. E., Cappelen, J., Fausto, R. S., Fettweis, X., Andersen, J. K., Mote, T., Smeets, C. J. P. P., Van As, D., Van De Wal, R. S. W., Romanovsky, V. E., Smith, S. L., Shiklomanov, N. I., Kholodov, A. L., Drozdov, D. S., Malkova, G. V., Marchenko, S. S., Jella, K. B., Mudryk, L., Brown, R., Derksen, C., Luojus, K., Decharme, B., Holmes, R. M., Shiklomanov, A. I., Suslova, A., Tretiakov, M., Mcclelland, J. W., Spencer, R. G. M., Tank, S. E., Epstein, H., Bhatt, U., Raynolds, M., Walker, D., Forbes, B., Phoenix, G., Bjerke, J., Tommervik, H., Karlsen, S. -r., Goetz, S., Jia, G., Bernhard, G. H., Grooss, J. -u., Ialongo, I., Johnsen, B., Lakkala, K., Manney, G. L., Mueller, R., Scambos, T., Stammerjohn, S., Clem, K. R., Barreira, S., Fogt, R. L., Colwell, S., Keller, L. M., Lazzara, M. A., Reid, P., Massom, R. A., Lieser, J. L., Meijers, A., Sallee, J. -b., Grey, A., Johnson, K., Arrigo, K., Swart, S., King, B., Meredith, M., Mazloff, M., Scardilli, A., Claus, F., Shuman, C. A., Kramarova, N., Newman, P. A., Nash, E. R., Strahan, S. E., Johnson, B., Pitts, M., Santee, M. L., Petropavlovskikh, I., Braathen, G. O., Coy, L., De Laat, J., Bissolli, P., Ganter, C., Li, T., Mekonnen, A., Gleason, K., Smith, A., Fenimore, C., Heim, R. R., Jr., Nauslar, N. J., Brown, T. J., Mcevoy, D. J., Lareau, N. P., Amador, J. A., Hidalgo, H. G., Alfaro, E. J., Calderon, B., Mora, N., Stephenson, T. S., Taylor, M. A., Trotman, A. R., Van Meerbeeck, C. J., Campbell, J. D., Brown, A., Spence, J., Martinez, R., Diaz, E., Marin, D., Hernandez, R., Caceres, L., Zambrano, E., Nieto, J., Marengo, J. A., Espinoza, J. C., Alves, L. M., Ronchail, J., Lavado-casimiro, J. W., Ramos, I., Davila, C., Ramos, A. M., Diniz, F. A., Aliaga-nestares, V., Castro, A. Y., Stella, J. L., Aldeco, L. S., Diaz, D. A. Campos, Misevicius, N., Kabidi, K., Sayouri, A., Elkharrim, M., Mostafa, A. E., Hagos, S., Feng, Z., Ijampy, J. A., Sima, F., Francis, S. D., Tsidu, G. Mengistu, Kruger, A. C., Mcbride, C., Jumaux, G., Dhurmea, K. R., Belmont, M., Rakotoarimalala, C. L., Labbe, L., Rosner, B., Benedict, I., Van Heerwaarden, C., Weerts, A., Hazeleger, W., Trachte, K., Zhu, Z., Zhang, P., Lee, T. C., Ripaldi, A., Mochizuki, Y., Lim, J. -y, Oyunjargal, L., Timbal, B., Srivastava, A. K., Revadekar, J. V., Rajeevan, M., Shimpo, A., Khoshkam, M., Kazemi, A. Fazl, Zeyaeyan, S., Lander, M. A., Mcgree, S., Tobin, S., and Bettio, L.

Published
2019

23. State of the climate in 2018

Author

Ades, M., Adler, R., Aldeco, L.S., Alejandra, G., Alfaro, E.J., Aliaga-Nestares, V., Allan, R.P., Allan, R., Alves, L.M., Amador, J.A., Andersen, J.K., Anderson, J., Arndt, D.S., Arosio, C., Arrigo, K., Azorin-Molina, C., Bardin, M.Y., Barichivich, J., Barreira, S., Baxter, S., Beck, H.E., Becker, A., Bell, G.D., Bellouin, N., Belmont, M., Benedetti, A., Benedict, I., Bernhard, G.H., Berrisford, P., Berry, D.I., Bettio, L., Bhatt, U.S., Biskaborn, B.K., Bissolli, P., Bjella, K.L., Bjerke, J.K., Blake, E.S., Blenkinsop, S., Blunden, J., Bock, O., Bosilovich, M.G., Boucher, O., Box, J.E., Boyer, T., Braathen, G., Bringas, F.G., Bromwich, D.H., Brown, A., Brown, R., Brown, T.J., Buehler, S.A., Cáceres, L., Calderón, B., Camargo, S.J., Campbell, J.D., Campos Diaz, D.A., Cappelen, J., Carrea, L., Carrier, S.B., Carter, B.R., Castro, A.Y., Cetinic, I., Chambers, D.P., Chen, L., Cheng, L., Cheng, V.Y.S., Christiansen, H.H., Christy, J.R., Chung, E.-S., Claus, F., Clem, K.R., Coelho, C.A.S., Coldewey-Egbers, M., Colwell, S., Cooper, O.R., Cosca, C., Covey, C., Coy, L., Dávila, C.P., Davis, S.M., de Eyto, E., de Jeu, R.A.M., De Laat, J., Decharme, B., Degasperi, C.L., Degenstein, D., Demircan, M., Derksen, C., Dhurmea, K.R., Di Girolamo, L., Diamond, H.J., Diaz, E., Diniz, F.A., Dlugokencky, E.J., Dohan, K., Dokulil, M.T., Dolman, A.J., Domingues, C.M., Domingues, R., Donat, M.G., Dorigo, W.A., Drozdov, D.S., Druckenmiller, M.L., Dunn, R.J.H., Durre, I., Dutton, G.S., Elkharrim, M., Elkins, J.W., Epstein, H.E., Espinoza, J.C., Famiglietti, J.S., Farrell, S.L., Fausto, R.S., Feely, R.A., Feng, Z., Fenimore, C., Fettweis, X., Fioletov, V.E., Flemming, J., Fogt, R.L., Forbes, B.C., Foster, M.J., Francis, S.D., Franz, B.A., Frey, R.A., Frith, S.M., Froidevaux, L., Ganter, C., Garforth, J., Gerland, S., Gilson, J., Gleason, K., Gobron, N., Goetz, S., Goldenberg, S.B., Goni, G., Gray, A., Groo, J.-U., Gruber, A., Gu, G., Guard, C.C.P., Gupta, S.K., Gutiérrez, D., Haas, Christian, Hagos, S., Hahn, S., Haimberger, L., Hall, B.D., Halpert, M.S., Hamlington, B.D., Hanna, E., Hanssen-Bauer, I., Harris, I., Hazeleger, W., He, Q., Heidinger, A.K., Heim, Jr., Hemming, D.L., Hendricks, Stefan, Hernández, R., Hersbach, H.E., Hidalgo, H.G., Ho, S.-P.B., Holmes, R.M., Hu, C., Huang, B., Hubbard, K., Hubert, D., Hurst, D.F., Ialongo, I., Ijampy, J.A., Inness, A., Isaac, V., Isaksen, K., Ishii, M., Jeffries, M.O., Jevrejeva, S., Jia, G., Jiménez, C., Jin, X., John, V., Johnsen, B., Johnson, G.C., Johnson, K.S., Johnson, B., Jones, P.D., Jumaux, G., Kabidi, K., Kaiser, J.W., Karaköylü, E.M., Karlsen, S.-R., Karnauskas, M., Kato, S., Kazemi, A.F., Kelble, C., Keller, L.M., Kennedy, J., Kholodov, A.L., Khoshkam, M., Kidd, R., Killick, R., Kim, H., Kim, S.-J., King, A.D., King, B.A., Kipling, Z., Klotzbach, P.J., Knaff, J.A., Korhonen, J., Korshunova, N.N., Kramarova, N.A., Kratz, D.P., Kruger, A., Kruk, M.C., Krumpen, Thomas, Labbé, L., Ladd, C., Lakatos, M., Lakkala, K., Lander, M.A., Landschützer, P., Landsea, C.W., Lareau, N.P., Lavado-Casimiro, W., Lazzara, M.A., Lee, T.C., Leuliette, E., L�heureux, M., Li, B., Li, T., Lieser, J.L., Lim, J.-Y., Lin, I.-I., Liu, H., Locarnini, R., Loeb, N.G., Long, C.S., López, L.A., Lorrey, A.M., Loyola, D., Lumpkin, R., Luo, J.-J., Luojus, K., Lyman, J.M., Malkova, G.V., Manney, G.L., Marchenko, S.S., Marengo, J.A., Marin, D., Marquardt Collow, A.B., Marra, J.J., Marszelewski, W., Martens, B., Martínez-Güingla, R., Massom, R.A., May, L., Mayer, M., Mazloff, M., McBride, C., McCabe, M., McClelland, J.W., McEvoy, D.J., McGree, S., McVicar, T.R., Mears, C.A., Meier, W., Meijers, A., Mekonnen, A., Mengistu Tsidu, G., Menzel, W.P., Merchant, C.J., Meredith, M.P., Merrifield, M.A., Miller, B., Miralles, D.G., Misevicius, N., Mitchum, G.T., Mochizuki, Y., Monselesan, D., Montzka, S.A., Mora, N., Morice, C., Mosquera-Vásquez, K., Mostafa, A.E., Mote, T., Mudryk, L., Mühle, J., Mullan, A.B., Müller, R., Myneni, R., Nash, E.R., Nauslar, N.J., Nerem, R.S., Newman, P.A., Nicolas, J.P., Nieto, J.J., Noetzli, J., Osborn, T.J., Osborne, E., Overland, J., Oyunjargal, L., Park, T., Pasch, R.J., Pascual Ramírez, R., Pastor Saavedra, M.A., Paterson, A.M., Pearce, P.R., Pelto, M.S., Perovich, D., Petropavlovskikh, I., Pezza, A.B., Phillips, C., Phillips, D., Phoenix, G., Pinty, B., Pitts, M., Po-Chedley, S., Polashenski, C., Preimesberger, W., Purkey, S.G., Quispe, N., Rajeevan, M., Rakotoarimalala, C.L., Ramos, A.M., Ramos, I., Randel, W., Raynolds, M.K., Reagan, J., Reid, P., Reimer, C., Rémy, S., Revadekar, J.V., Richardson, A.D., Richter-Menge, J., Ricker, Robert, Ripaldi, A., Robinson, D.A., Rodell, M., Rodriguez Camino, E., Romanovsky, V.E., Ronchail, J., Rosenlof, K.H., Rösner, B., Roth, C., Rozanov, A., Rusak, J.A., Rustemeier, E., Rutishäuser, T., Sallée, J.-B., Sánchez-Lugo, A., Santee, M.L., Sawaengphokhai, P., Sayouri, A., Scambos, T.A., Scanlon, T., Scardilli, A.S., Schenzinger, V., Schladow, S.G., Schmid, C., Schmid, M., Schoeneich, P., Schreck, III, Selkirk, H.B., Sensoy, S., Shi, L., Shiklomanov, A.I., Shiklomanov, N.I., Shimpo, A., Shuman, C.A., Siegel, D.A., Sima, F., Simmons, A.J., Smeets, C.J.P.P., Smith, A., Smith, S.L., Soden, B., Sofieva, V., Sparks, T.H., Spence, J., Spencer, R.G.M., Spillane, S., Srivastava, A.K., Stabeno, P.J., Stackhouse, Jr., Stammerjohn, S., Stanitski, D.M., Steinbrecht, W., Stella, J.L., Stengel, M., Stephenson, T.S., Strahan, S.E., Streeter, C., Streletskiy, D.A., Sun-Mack, S., Suslova, A., Sutton, A.J., Swart, S., Sweet, W., Takahashi, K.S., Tank, S.E., Taylor, M.A., Tedesco, M., Thackeray, S.J., Thompson, P.R., Timbal, B., Timmermans, M.-L., Tobin, S., Tømmervik, H., Tourpali, K., Trachte, K., Tretiakov, M., Trewin, B.C., Triñanes, J.A., Trotman, A.R., Tschudi, M., Tye, M.R., van As, D., van de Wal, R.S.W., van der A, R.J., van der Schalie, R., van der Schrier, G., van der Werf, G.R., van Heerwaarden, C., Van Meerbeeck, C.J., Verburg, P., Vieira, G., Vincent, L.A., Vömel, H., Vose, R.S., Walker, D.A., Walsh, J.E., Wang, B., Wang, H., Wang, L., Wang, M., Wang, R., Wang, S.-H., Wanninkhof, R., Watanabe, S., Weber, M., Webster, M., Weerts, A., Weller, R.A., Westberry, T.K., Weyhenmeyer, G.A., Widlansky, M.J., Wijffels, S.E., Wilber, A.C., Wild, J.D., Willett, K.M., Wong, T., Wood, E.F., Woolway, R.I., Xue, Y., Yin, X., Yu, L., Zambrano, E., Zeyaeyan, S., Zhang, H.-M., Zhang, P., Zhao, G., Zhao, L., Zhou, X., Zhu, Z., Ziemke, J.R., Ziese, M., Andersen, A., Griffin, J., Hammer, G., Love-Brotak, S.E., Misch, D.J., Riddle, D.B., Veasey, S.W., Ades, M., Adler, R., Aldeco, L.S., Alejandra, G., Alfaro, E.J., Aliaga-Nestares, V., Allan, R.P., Allan, R., Alves, L.M., Amador, J.A., Andersen, J.K., Anderson, J., Arndt, D.S., Arosio, C., Arrigo, K., Azorin-Molina, C., Bardin, M.Y., Barichivich, J., Barreira, S., Baxter, S., Beck, H.E., Becker, A., Bell, G.D., Bellouin, N., Belmont, M., Benedetti, A., Benedict, I., Bernhard, G.H., Berrisford, P., Berry, D.I., Bettio, L., Bhatt, U.S., Biskaborn, B.K., Bissolli, P., Bjella, K.L., Bjerke, J.K., Blake, E.S., Blenkinsop, S., Blunden, J., Bock, O., Bosilovich, M.G., Boucher, O., Box, J.E., Boyer, T., Braathen, G., Bringas, F.G., Bromwich, D.H., Brown, A., Brown, R., Brown, T.J., Buehler, S.A., Cáceres, L., Calderón, B., Camargo, S.J., Campbell, J.D., Campos Diaz, D.A., Cappelen, J., Carrea, L., Carrier, S.B., Carter, B.R., Castro, A.Y., Cetinic, I., Chambers, D.P., Chen, L., Cheng, L., Cheng, V.Y.S., Christiansen, H.H., Christy, J.R., Chung, E.-S., Claus, F., Clem, K.R., Coelho, C.A.S., Coldewey-Egbers, M., Colwell, S., Cooper, O.R., Cosca, C., Covey, C., Coy, L., Dávila, C.P., Davis, S.M., de Eyto, E., de Jeu, R.A.M., De Laat, J., Decharme, B., Degasperi, C.L., Degenstein, D., Demircan, M., Derksen, C., Dhurmea, K.R., Di Girolamo, L., Diamond, H.J., Diaz, E., Diniz, F.A., Dlugokencky, E.J., Dohan, K., Dokulil, M.T., Dolman, A.J., Domingues, C.M., Domingues, R., Donat, M.G., Dorigo, W.A., Drozdov, D.S., Druckenmiller, M.L., Dunn, R.J.H., Durre, I., Dutton, G.S., Elkharrim, M., Elkins, J.W., Epstein, H.E., Espinoza, J.C., Famiglietti, J.S., Farrell, S.L., Fausto, R.S., Feely, R.A., Feng, Z., Fenimore, C., Fettweis, X., Fioletov, V.E., Flemming, J., Fogt, R.L., Forbes, B.C., Foster, M.J., Francis, S.D., Franz, B.A., Frey, R.A., Frith, S.M., Froidevaux, L., Ganter, C., Garforth, J., Gerland, S., Gilson, J., Gleason, K., Gobron, N., Goetz, S., Goldenberg, S.B., Goni, G., Gray, A., Groo, J.-U., Gruber, A., Gu, G., Guard, C.C.P., Gupta, S.K., Gutiérrez, D., Haas, Christian, Hagos, S., Hahn, S., Haimberger, L., Hall, B.D., Halpert, M.S., Hamlington, B.D., Hanna, E., Hanssen-Bauer, I., Harris, I., Hazeleger, W., He, Q., Heidinger, A.K., Heim, Jr., Hemming, D.L., Hendricks, Stefan, Hernández, R., Hersbach, H.E., Hidalgo, H.G., Ho, S.-P.B., Holmes, R.M., Hu, C., Huang, B., Hubbard, K., Hubert, D., Hurst, D.F., Ialongo, I., Ijampy, J.A., Inness, A., Isaac, V., Isaksen, K., Ishii, M., Jeffries, M.O., Jevrejeva, S., Jia, G., Jiménez, C., Jin, X., John, V., Johnsen, B., Johnson, G.C., Johnson, K.S., Johnson, B., Jones, P.D., Jumaux, G., Kabidi, K., Kaiser, J.W., Karaköylü, E.M., Karlsen, S.-R., Karnauskas, M., Kato, S., Kazemi, A.F., Kelble, C., Keller, L.M., Kennedy, J., Kholodov, A.L., Khoshkam, M., Kidd, R., Killick, R., Kim, H., Kim, S.-J., King, A.D., King, B.A., Kipling, Z., Klotzbach, P.J., Knaff, J.A., Korhonen, J., Korshunova, N.N., Kramarova, N.A., Kratz, D.P., Kruger, A., Kruk, M.C., Krumpen, Thomas, Labbé, L., Ladd, C., Lakatos, M., Lakkala, K., Lander, M.A., Landschützer, P., Landsea, C.W., Lareau, N.P., Lavado-Casimiro, W., Lazzara, M.A., Lee, T.C., Leuliette, E., L�heureux, M., Li, B., Li, T., Lieser, J.L., Lim, J.-Y., Lin, I.-I., Liu, H., Locarnini, R., Loeb, N.G., Long, C.S., López, L.A., Lorrey, A.M., Loyola, D., Lumpkin, R., Luo, J.-J., Luojus, K., Lyman, J.M., Malkova, G.V., Manney, G.L., Marchenko, S.S., Marengo, J.A., Marin, D., Marquardt Collow, A.B., Marra, J.J., Marszelewski, W., Martens, B., Martínez-Güingla, R., Massom, R.A., May, L., Mayer, M., Mazloff, M., McBride, C., McCabe, M., McClelland, J.W., McEvoy, D.J., McGree, S., McVicar, T.R., Mears, C.A., Meier, W., Meijers, A., Mekonnen, A., Mengistu Tsidu, G., Menzel, W.P., Merchant, C.J., Meredith, M.P., Merrifield, M.A., Miller, B., Miralles, D.G., Misevicius, N., Mitchum, G.T., Mochizuki, Y., Monselesan, D., Montzka, S.A., Mora, N., Morice, C., Mosquera-Vásquez, K., Mostafa, A.E., Mote, T., Mudryk, L., Mühle, J., Mullan, A.B., Müller, R., Myneni, R., Nash, E.R., Nauslar, N.J., Nerem, R.S., Newman, P.A., Nicolas, J.P., Nieto, J.J., Noetzli, J., Osborn, T.J., Osborne, E., Overland, J., Oyunjargal, L., Park, T., Pasch, R.J., Pascual Ramírez, R., Pastor Saavedra, M.A., Paterson, A.M., Pearce, P.R., Pelto, M.S., Perovich, D., Petropavlovskikh, I., Pezza, A.B., Phillips, C., Phillips, D., Phoenix, G., Pinty, B., Pitts, M., Po-Chedley, S., Polashenski, C., Preimesberger, W., Purkey, S.G., Quispe, N., Rajeevan, M., Rakotoarimalala, C.L., Ramos, A.M., Ramos, I., Randel, W., Raynolds, M.K., Reagan, J., Reid, P., Reimer, C., Rémy, S., Revadekar, J.V., Richardson, A.D., Richter-Menge, J., Ricker, Robert, Ripaldi, A., Robinson, D.A., Rodell, M., Rodriguez Camino, E., Romanovsky, V.E., Ronchail, J., Rosenlof, K.H., Rösner, B., Roth, C., Rozanov, A., Rusak, J.A., Rustemeier, E., Rutishäuser, T., Sallée, J.-B., Sánchez-Lugo, A., Santee, M.L., Sawaengphokhai, P., Sayouri, A., Scambos, T.A., Scanlon, T., Scardilli, A.S., Schenzinger, V., Schladow, S.G., Schmid, C., Schmid, M., Schoeneich, P., Schreck, III, Selkirk, H.B., Sensoy, S., Shi, L., Shiklomanov, A.I., Shiklomanov, N.I., Shimpo, A., Shuman, C.A., Siegel, D.A., Sima, F., Simmons, A.J., Smeets, C.J.P.P., Smith, A., Smith, S.L., Soden, B., Sofieva, V., Sparks, T.H., Spence, J., Spencer, R.G.M., Spillane, S., Srivastava, A.K., Stabeno, P.J., Stackhouse, Jr., Stammerjohn, S., Stanitski, D.M., Steinbrecht, W., Stella, J.L., Stengel, M., Stephenson, T.S., Strahan, S.E., Streeter, C., Streletskiy, D.A., Sun-Mack, S., Suslova, A., Sutton, A.J., Swart, S., Sweet, W., Takahashi, K.S., Tank, S.E., Taylor, M.A., Tedesco, M., Thackeray, S.J., Thompson, P.R., Timbal, B., Timmermans, M.-L., Tobin, S., Tømmervik, H., Tourpali, K., Trachte, K., Tretiakov, M., Trewin, B.C., Triñanes, J.A., Trotman, A.R., Tschudi, M., Tye, M.R., van As, D., van de Wal, R.S.W., van der A, R.J., van der Schalie, R., van der Schrier, G., van der Werf, G.R., van Heerwaarden, C., Van Meerbeeck, C.J., Verburg, P., Vieira, G., Vincent, L.A., Vömel, H., Vose, R.S., Walker, D.A., Walsh, J.E., Wang, B., Wang, H., Wang, L., Wang, M., Wang, R., Wang, S.-H., Wanninkhof, R., Watanabe, S., Weber, M., Webster, M., Weerts, A., Weller, R.A., Westberry, T.K., Weyhenmeyer, G.A., Widlansky, M.J., Wijffels, S.E., Wilber, A.C., Wild, J.D., Willett, K.M., Wong, T., Wood, E.F., Woolway, R.I., Xue, Y., Yin, X., Yu, L., Zambrano, E., Zeyaeyan, S., Zhang, H.-M., Zhang, P., Zhao, G., Zhao, L., Zhou, X., Zhu, Z., Ziemke, J.R., Ziese, M., Andersen, A., Griffin, J., Hammer, G., Love-Brotak, S.E., Misch, D.J., Riddle, D.B., and Veasey, S.W.

Published
2019

27. State of the climate in 2016

Author

Aaron-Morrison, A. P., Ackerman, S. A., Adams, N. G., Adler, R. F., Albanil, A., Alfaro, E. J., Allan, R., Alves, L. M., Amador, J. A., Andreassen, L. M., Arendt, A., Arévalo, J., Arndt, D. S., Arzhanova, N. M., Aschan, M. M., Azorin-Molina, C., Banzon, V., Bardin, M. U., Barichivich, J., Baringer, M. O., Barreira, S., Baxter, S., Bazo, J., Becker, A., Bedka, K. M., Behrenfeld, M. J., Bell, G. D., Belmont, M., Benedetti, A., Bernhard, G., Berrisford, P., Berry, D. I., Bettolli, M. L., Bhatt, U. S., Bidegain, M., Bill, B. D., Billheimer, S., Bissolli, P., Blake, E. S., Blunden, J., Bosilovich, M. G., Boucher, O., Boudet, D., Box, J. E., Boyer, T., Braathen, G. O., Bromwich, D. H., Brown, R., Bulygina, O. N., Burgess, D., Calderón, B., Camargo, S. J., Campbell, J. D., Cappelen, J., Carrasco, G., Carter, B. R., Chambers, D. P., Chandler, E., Christiansen, H. H., Christy, J. R., Chung, D., Chung, E. S., Cinque, K., Clem, K. R., Coelho, C. A., Cogley, J. G., Coldewey-Egbers, M., Colwell, S., Cooper, O. R., Copland, L., Cosca, C. E., Cross, J. N., Crotwell, M. J., Crouch, J., Davis, S. M., Eyto, E., Jeu, R. A. M., Laat, J., Degasperi, C. L., Degenstein, D., Demircan, M., Derksen, C., Destin, D., Di Girolamo, L., Di Giuseppe, F., Diamond, H. J., Dlugokencky, E. J., Dohan, K., Dokulil, M. T., Dolgov, A. V., Dolman, A. J., Domingues, C. M., Donat, M. G., Dong, S., Dorigo, W. A., Dortch, Q., Doucette, G., Drozdov, D. S., Ducklow, H., Dunn, R. J. H., Durán-Quesada, A. M., Dutton, G. S., Ebrahim, A., Elkharrim, M., Elkins, J. W., Espinoza, J. C., Etienne-Leblanc, S., Evans, T. E., Famiglietti, J. S., Farrell, S., Fateh, S., Fausto, R. S., Fedaeff, N., Feely, R. A., Feng, Z., Fenimore, C., Fettweis, X., Fioletov, V. E., Flemming, J., Fogarty, C. T., Fogt, R. L., Folland, C., Fonseca, C., Fossheim, M., Foster, M. J., Fountain, A., Francis, S. D., Franz, B. A., Frey, R. A., Frith, S. M., Froidevaux, L., Ganter, C., Garzoli, S., Gerland, S., Gobron, N., Goldenberg, S. B., Gomez, R. S., Goni, G., Goto, A., Grooß, J. U., Gruber, A., Guard, C. C., Gugliemin, M., Gupta, S. K., Gutiérrez, J. M., Hagos, S., Hahn, S., Haimberger, L., Hakkarainen, J., Hall, B. D., Halpert, M. S., Hamlington, B. D., Hanna, E., Hansen, K., Hanssen-Bauer, I., Harris, I., Heidinger, A. K., Heikkilä, A., Heil, A., Heim, R. R., Hendricks, S., Hernández, M., Hidalgo, H. G., Hilburn, K., Ho, S. P. B., Holmes, R. M., Hu, Z. Z., Huang, B., Huelsing, H. K., Huffman, G. J., Hughes, C., Hurst, D. F., Ialongo, I., Ijampy, J. A., Ingvaldsen, R. B., Inness, A., Isaksen, K., Ishii, M., Jevrejeva, S., Jiménez, C., Jin, X., Johannesen, E., John, V., Johnsen, B., Johnson, B., Johnson, G. C., Jones, P. D., Joseph, A. C., Jumaux, G., Kabidi, K., Kaiser, J. W., Kato, S., Kazemi, A., Keller, L. M., Kendon, M., Kennedy, J., Kerr, K., Kholodov, A. L., Khoshkam, M., Killick, R., Kim, H., Kim, S. J., Kimberlain, T. B., Klotzbach, P. J., Knaff, J. A., Kobayashi, S., Kohler, J., Korhonen, J., Korshunova, N. N., Kovacs, K. M., Kramarova, N., Kratz, D. P., Kruger, A., Kruk, M. C., Kudela, R., Kumar, A., Lakatos, M., Lakkala, K., Lander, M. A., Landsea, C. W., Lankhorst, M., Lantz, K., Lazzara, M. A., Lemons, P., Leuliette, E., L’heureux, M., Lieser, J. L., Lin, I. I., Liu, H., Liu, Y., Locarnini, R., Loeb, N. G., Lo Monaco, C., Long, C. S., López Álvarez, L. A., Lorrey, A. M., Loyola, D., Lumpkin, R., Luo, J. J., Luojus, K., Lydersen, C., Lyman, J. M., Maberly, S. C., Maddux, B. C., Malheiros Ramos, A., Malkova, G. V., Manney, G., Marcellin, V., Marchenko, S. S., Marengo, J. A., Marra, J. J., Marszelewski, W., Martens, B., Martínez-Güingla, R., Massom, R. A., Mata, M. M., Mathis, J. T., May, L., Mayer, M., Mazloff, M., Mcbride, C., Mccabe, M. F., Mccarthy, M., Mcclelland, J. W., Mcgree, S., Mcvicar, T. R., Mears, C. A., Meier, W., Meinen, C. S., Mekonnen, A., Menéndez, M., Mengistu Tsidu, G., Menzel, W. P., Merchant, C. J., Meredith, M. P., Merrifield, M. A., Metzl, N., Minnis, P., Miralles, D. G., Mistelbauer, T., Mitchum, G. T., Monselesan, D., Monteiro, P., Montzka, S. A., Morice, C., Mote, T., Mudryk, L., Mühle, J., Mullan, A. B., Nash, E. R., Naveira-Garabato, A. C., Nerem, R. S., Newman, P. A., Nieto, J. J., Noetzli, J., O’neel, S., Osborn, T. J., Overland, J., Oyunjargal, L., Parinussa, R. M., Park, E. H., Parker, D., Parrington, M., Parsons, A. R., Pasch, R. J., Pascual-Ramírez, R., Paterson, A. M., Paulik, C., Pearce, P. R., Pelto, M. S., Peng, L., Perkins-Kirkpatrick, S. E., Perovich, D., Petropavlovskikh, I., Pezza, A. B., Phillips, D., Pinty, B., Pitts, M. C., Pons, M. R., Porter, A. O., Primicerio, R., Proshutinsky, A., Quegan, S., Quintana, J., Rahimzadeh, F., Rajeevan, M., Randriamarolaza, L., Razuvaev, V. N., Reagan, J., Reid, P., Reimer, C., Rémy, S., Renwick, J. A., Revadekar, J. V., Richter-Menge, J., Riffler, M., Rimmer, A., Rintoul, S., Robinson, D. A., Rodell, M., Rodríguez Solís, J. L., Romanovsky, V. E., Ronchail, J., Rosenlof, K. H., Roth, C., Rusak, J. A., Sabine, C. L., Sallée, J. B., Sánchez-Lugo, A., Santee, M. L., Sawaengphokhai, P., Sayouri, A., Scambos, T. A., Schemm, J., Schladow, S. G., Schmid, C., Schmid, M., Schmidtko, S., Schreck, C. J., Selkirk, H. B., Send, U., Sensoy, S., Setzer, A., Sharp, M., Shaw, A., Shi, L., Shiklomanov, A. I., Shiklomanov, N. I., Siegel, D. A., Signorini, S. R., Sima, F., Simmons, A. J., Smeets, C. J. P. P., Smith, S. L., Spence, J. M., Srivastava, A. K., Stackhouse, P. W., Stammerjohn, S., Steinbrecht, W., Stella, J. L., Stengel, M., Stennett-Brown, R., Stephenson, T. S., Strahan, S., Streletskiy, D. A., Sun-Mack, S., Swart, S., Sweet, W., Talley, L. D., Tamar, G., Tank, S. E., Taylor, M. A., Tedesco, M., Teubner, K., Thoman, R. L., Thompson, P., Thomson, L., Timmermans, M. L., Maxim Timofeyev, Tirnanes, J. A., Tobin, S., Trachte, K., Trainer, V. L., Tretiakov, M., Trewin, B. C., Trotman, A. R., Tschudi, M., As, D., Wal, R. S. W., A, R. J., Schalie, R., Schrier, G., Werf, G. R., Meerbeeck, C. J., Velicogna, I., Verburg, P., Vigneswaran, B., Vincent, L. A., Volkov, D., Vose, R. S., Wagner, W., Wåhlin, A., Wahr, J., Walsh, J., Wang, C., Wang, J., Wang, L., Wang, M., Wang, S. H., Wanninkhof, R., Watanabe, S., Weber, M., Weller, R. A., Weyhenmeyer, G. A., Whitewood, R., Wijffels, S. E., Wilber, A. C., Wild, J. D., Willett, K. M., Williams, M. J. M., Willie, S., Wolken, G., Wong, T., Wood, E. F., Woolway, R. I., Wouters, B., Xue, Y., Yamada, R., Yim, S. Y., Yin, X., Young, S. H., Yu, L., Zahid, H., Zambrano, E., Zhang, P., Zhao, G., Zhou, L., Ziemke, J. R., Love-Brotak, S. E., Gilbert, K., Maycock, T., Osborne, S., Sprain, M., Veasey, S. W., Ambrose, B. J., Griffin, J., Misch, D. J., Riddle, D. B., Young, T., Macias Fauria, M, Blunden, J, Arndt, D, Earth and Climate, Faculty of Earth and Life Sciences, Clinical Developmental Psychology, Climate Change and Landscape Dynamics, and Molecular Cell Physiology

Subjects
Meteor (satellite), Atmospheric Science, 010504 meteorology & atmospheric sciences, 0208 environmental biotechnology, 02 engineering and technology, 01 natural sciences, 020801 environmental engineering, Geography, 13. Climate action, Climatology, SDG 13 - Climate Action, SDG 14 - Life Below Water, 0105 earth and related environmental sciences
Abstract

In 2016, the dominant greenhouse gases released into Earth's atmosphere-carbon dioxide, methane, and nitrous oxide-continued to increase and reach new record highs. The 3.5 +/- 0.1 ppm rise in global annual mean carbon dioxide from 2015 to 2016 was the largest annual increase observed in the 58-year measurement record. The annual global average carbon dioxide concentration at Earth's surface surpassed 400 ppm (402.9 +/- 0.1 ppm) for the first time in the modern atmospheric measurement record and in ice core records dating back as far as 800000 years. One of the strongest El Nino events since at least 1950 dissipated in spring, and a weak La Nina evolved later in the year. Owing at least in part to the combination of El Nino conditions early in the year and a long-term upward trend, Earth's surface observed record warmth for a third consecutive year, albeit by a much slimmer margin than by which that record was set in 2015. Above Earth's surface, the annual lower troposphere temperature was record high according to all datasets analyzed, while the lower stratospheric temperature was record low according to most of the in situ and satellite datasets. Several countries, including Mexico and India, reported record high annual temperatures while many others observed near-record highs. A week-long heat wave at the end of April over the northern and eastern Indian peninsula, with temperatures surpassing 44 degrees C, contributed to a water crisis for 330 million people and to 300 fatalities. In the Arctic the 2016 land surface temperature was 2.0 degrees C above the 1981-2010 average, breaking the previous record of 2007, 2011, and 2015 by 0.8 degrees C, representing a 3.5 degrees C increase since the record began in 1900. The increasing temperatures have led to decreasing Arctic sea ice extent and thickness. On 24 March, the sea ice extent at the end of the growth season saw its lowest maximum in the 37-year satellite record, tying with 2015 at 7.2% below the 1981-2010 average. The September 2016 Arctic sea ice minimum extent tied with 2007 for the second lowest value on record, 33% lower than the 1981-2010 average. Arctic sea ice cover remains relatively young and thin, making it vulnerable to continued extensive melt. The mass of the Greenland Ice Sheet, which has the capacity to contribute similar to 7 m to sea level rise, reached a record low value. The onset of its surface melt was the second earliest, after 2012, in the 37-year satellite record. Sea surface temperature was record high at the global scale, surpassing the previous record of 2015 by about 0.01 degrees C. The global sea surface temperature trend for the 21st century-to-date of +0.162 degrees C decade(-1) is much higher than the longer term 1950-2016 trend of +0.100 degrees C decade(-1). Global annual mean sea level also reached a new record high, marking the sixth consecutive year of increase. Global annual ocean heat content saw a slight drop compared to the record high in 2015. Alpine glacier retreat continued around the globe, and preliminary data indicate that 2016 is the 37th consecutive year of negative annual mass balance. Across the Northern Hemisphere, snow cover for each month from February to June was among its four least extensive in the 47-year satellite record. Continuing a pattern below the surface, record high temperatures at 20-m depth were measured at all permafrost observatories on the North Slope of Alaska and at the Canadian observatory on northernmost Ellesmere Island. In the Antarctic, record low monthly surface pressures were broken at many stations, with the southern annular mode setting record high index values in March and June. Monthly high surface pressure records for August and November were set at several stations. During this period, record low daily and monthly sea ice extents were observed, with the November mean sea ice extent more than 5 standard deviations below the 1981-2010 average. These record low sea ice values contrast sharply with the record high values observed during 2012-14. Over the region, springtime Antarctic stratospheric ozone depletion was less severe relative to the 1991-2006 average, but ozone levels were still low compared to pre-1990 levels. Closer to the equator, 93 named tropical storms were observed during 2016, above the 1981-2010 average of 82, but fewer than the 101 storms recorded in 2015. Three basins-the North Atlantic, and eastern and western North Pacific-experienced above-normal activity in 2016. The Australian basin recorded its least active season since the beginning of the satellite era in 1970. Overall, four tropical cyclones reached the Saffir-Simpson category 5 intensity level. The strong El Nino at the beginning of the year that transitioned to a weak La Nina contributed to enhanced precipitation variability around the world. Wet conditions were observed throughout the year across southern South America, causing repeated heavy flooding in Argentina, Paraguay, and Uruguay. Wetter-than-usual conditions were also observed for eastern Europe and central Asia, alleviating the drought conditions of 2014 and 2015 in southern Russia. In the United States, California had its first wetter-than-average year since 2012, after being plagued by drought for several years. Even so, the area covered by drought in 2016 at the global scale was among the largest in the post-1950 record. For each month, at least 12% of land surfaces experienced severe drought conditions or worse, the longest such stretch in the record. In northeastern Brazil, drought conditions were observed for the fifth consecutive year, making this the longest drought on record in the region. Dry conditions were also observed in western Bolivia and Peru; it was Bolivia's worst drought in the past 25 years. In May, with abnormally warm and dry conditions already prevailing over western Canada for about a year, the human-induced Fort McMurray wildfire burned nearly 590000 hectares and became the costliest disaster in Canadian history, with $3 billion (U.S. dollars) in insured losses.

Published
2017

31. Overview of the Arctic Sea State and Boundary Layer Physics Program

Author

Thomson, J, Ackley, S, Girard-Ardhuin, F, Ardhuin, F, Babanin, A, Boutin, G, Brozena, J, Cheng, S, Collins, C, Doble, M, Fairall, C, Guest, P, Gebhardt, C, Gemmrich, J, Graber, HC, Holt, B, Lehner, S, Lund, B, Meylan, MH, Maksym, T, Montiel, F, Perrie, W, Persson, O, Rainville, L, Rogers, WE, Shen, H, Squire, V, Stammerjohn, S, Stopa, J, Smith, MM, Sutherland, P, Wadhams, P, Thomson, J, Ackley, S, Girard-Ardhuin, F, Ardhuin, F, Babanin, A, Boutin, G, Brozena, J, Cheng, S, Collins, C, Doble, M, Fairall, C, Guest, P, Gebhardt, C, Gemmrich, J, Graber, HC, Holt, B, Lehner, S, Lund, B, Meylan, MH, Maksym, T, Montiel, F, Perrie, W, Persson, O, Rainville, L, Rogers, WE, Shen, H, Squire, V, Stammerjohn, S, Stopa, J, Smith, MM, Sutherland, P, and Wadhams, P

Abstract

A large collaborative program has studied the coupled air‐ice‐ocean‐wave processes occurring in the Arctic during the autumn ice advance. The program included a field campaign in the western Arctic during the autumn of 2015, with in situ data collection and both aerial and satellite remote sensing. Many of the analyses have focused on using and improving forecast models. Summarizing and synthesizing the results from a series of separate papers, the overall view is of an Arctic shifting to a more seasonal system. The dramatic increase in open water extent and duration in the autumn means that large surface waves and significant surface heat fluxes are now common. When refreezing finally does occur, it is a highly variable process in space and time. Wind and wave events drive episodic advances and retreats of the ice edge, with associated variations in sea ice formation types (e.g., pancakes, nilas). This variability becomes imprinted on the winter ice cover, which in turn affects the melt season the following year.

Published
2018

34. Changing distributions of sea ice melt and meteoric water west of the Antarctic Peninsula

Author

Meredith, M.P., Stammerjohn, S., venables, H.J., Ducklow, H.W., Martinson, D.G., Iannuzzi, R.A., Leng, M.J., van Wessem, J.M., Reijmer, C.H., Barrand, N.E., Meredith, M.P., Stammerjohn, S., venables, H.J., Ducklow, H.W., Martinson, D.G., Iannuzzi, R.A., Leng, M.J., van Wessem, J.M., Reijmer, C.H., and Barrand, N.E.

Abstract

The Western Antarctic Peninsula has recently undergone rapid climatic warming, with associated decreases in sea ice extent and duration, and increases in precipitation and glacial discharge to the ocean. These shifts in the freshwater budget can have significant consequences on the functioning of the regional ecosystem, feedbacks on regional climate, and sea-level rise. Here we use shelf-wide oxygen isotope data from cruises in four consecutive Januaries (2011–2014) to distinguish the freshwater input from sea ice melt separately from that due to meteoric sources (precipitation plus glacial discharge). Sea ice melt distributions varied from minima in 2011 of around 0 % up to maxima in 2014 of around 4–5%. Meteoric water contribution to the marine environment is typically elevated inshore, due to local glacial discharge and orographic effects on precipitation, but this enhanced contribution was largely absent in January 2013 due to anomalously low precipitation in the last quarter of 2012. Both sea ice melt and meteoric water changes are seen to be strongly influenced by changes in regional wind forcing associated with the Southern Annular Mode and the El Niño–Southern Oscillation phenomenon, which also impact on net sea ice motion as inferred from the isotope data. A near-coastal time series of isotope data collected from Rothera Research Station reproduces well the temporal pattern of changes in sea ice melt, but less well the meteoric water changes, due to local glacial inputs and precipitation effects.

Published
2017

35. Drivers of interannual variability in virioplankton abundance at the coastal western Antarctic peninsula and the potential effects of climate change

Author

Evans, C., Brandsma, J., Pond, D.W., Venables, H.J., Meredith, M.P., Witte, H.J., Stammerjohn, S., Wilson, W.H., Clarke, A., Brussaard, C.P.D., Evans, C., Brandsma, J., Pond, D.W., Venables, H.J., Meredith, M.P., Witte, H.J., Stammerjohn, S., Wilson, W.H., Clarke, A., and Brussaard, C.P.D.

Abstract

An 8-year time-series in the Western Antarctic Peninsula(WAP) with an approximately weekly samplingfrequency was used to elucidate changes in virioplanktonabundance and their drivers in thisclimatically sensitive region. Virioplankton abundancesat the coastal WAP show a pronounced seasonalcycle with interannual variability in the timing andmagnitude of the summer maxima. Bacterioplanktonabundance is the most influential driving factor of thevirioplankton, and exhibit closely coupled dynamics.Sea ice cover and duration predetermine levels ofphytoplankton stock and thus, influence virioplanktonby dictating the substrates available to the bacterioplankton. However, variations in the compositionof the phytoplankton community andparticularly the prominence of Diatoms inferred fromsilicate drawdown, drive interannual differences inthe magnitude of the virioplankton bloom; likelyagain mediated through changes in the bacterioplankton.Their findings suggest that future warmingwithin the WAP will cause changes in sea ice that willinfluence viruses and their microbial hosts throughchanges in the timing, magnitude and composition ofthe phytoplankton bloom. Thus, the flow of matterand energy through the viral shunt may be decreasedwith consequences for the Antarctic food web andelement cycling.

Published
2017

36. Changing distributions of sea ice melt and meteoric water west of the Antarctic Peninsula

Author

Sub Dynamics Meteorology, Marine and Atmospheric Research, Meredith, M.P., Stammerjohn, S., venables, H.J., Ducklow, H.W., Martinson, D.G., Iannuzzi, R.A., Leng, M.J., van Wessem, J.M., Reijmer, C.H., Barrand, N.E., Sub Dynamics Meteorology, Marine and Atmospheric Research, Meredith, M.P., Stammerjohn, S., venables, H.J., Ducklow, H.W., Martinson, D.G., Iannuzzi, R.A., Leng, M.J., van Wessem, J.M., Reijmer, C.H., and Barrand, N.E.

Published
2017

37. The winter pack-ice zone provides a sheltered but food-poor habitat for larval Antarctic krill

Author

Meyer, B., Freier, U., Grimm, Volker, Groeneveld, J., Hunt, B.P.V., Kerwath, S., King, R., Klaas, C., Pakhomov, E., Meiners, K.M., Melbourne-Thomas, J., Murphy, E.J., Thorpe, S.E., Stammerjohn, S., Wolf-Gladrow, D., Auerswald, L., Götz, A., Halbach, L., Jarman, S., Kawaguchi, S., Krumpen, T., Nehrke, G., Ricker, R., Sumner, M., Teschke, M., Trebilco, R., Yilmaz, N.I., Meyer, B., Freier, U., Grimm, Volker, Groeneveld, J., Hunt, B.P.V., Kerwath, S., King, R., Klaas, C., Pakhomov, E., Meiners, K.M., Melbourne-Thomas, J., Murphy, E.J., Thorpe, S.E., Stammerjohn, S., Wolf-Gladrow, D., Auerswald, L., Götz, A., Halbach, L., Jarman, S., Kawaguchi, S., Krumpen, T., Nehrke, G., Ricker, R., Sumner, M., Teschke, M., Trebilco, R., and Yilmaz, N.I.

Abstract

A dominant Antarctic ecological paradigm suggests that winter sea ice is generally the main feeding ground for krill larvae. Observations from our winter cruise to the southwest Atlantic sector of the Southern Ocean contradict this view and present the first evidence that the pack-ice zone is a food-poor habitat for larval development. In contrast, the more open marginal ice zone provides a more favourable food environment for high larval krill growth rates. We found that complex under-ice habitats are, however, vital for larval krill when water column productivity is limited by light, by providing structures that offer protection from predators and to collect organic material released from the ice. The larvae feed on this sparse ice-associated food during the day. After sunset, they migrate into the water below the ice (upper 20 m) and drift away from the ice areas where they have previously fed. Model analyses indicate that this behaviour increases both food uptake in a patchy food environment and the likelihood of overwinter transport to areas where feeding conditions are more favourable in spring.

Published
2017

38. State of the climate in 2015

Author

Aaron-Morrison, A.P., Ackerman, S.A., Adams, N.G., Adler, R.F., Albanil, A., Alfaro, E.J., Allan, R., Alves, L.M., Amador, J.A., Andreassen, L.M., Arendt, A., Arévalo, J., Arndt, D.S., Arzhanova, N.M., Aschan, M.M., Azorin-Molina, C., Banzon, V., Bardin, M.U., Barichivich, J., Baringer, M.O., Barreira, S., Baxter, S., Bazo, J., Becker, A., Bedka, K.M., Behrenfeld, M.J., Bell, G.D., Belmont, M., Benedetti, A., Bernhard, G., Berrisford, P., Berry, D.I., Bettolli, M.L., Bhatt, U.S., Bidegain, M., Bill, B.D., Billheimer, S., Bissolli, P., Blake, E.S., Blunden, J., Bosilovich, M.G., Boucher, O., Boudet, D., Box, J.E., Boyer, T., Braathen, G.O., Bromwich, D.H., Brown, R., Bulygina, O.N., Burgess, D., Calderón, B., Camargo, S.J., Campbell, J.D., Cappelen, J., Carrasco, G., Carter, B.R., Chambers, D.P., Chandler, E., Christiansen, H.H., Christy, J.R., Chung, D., Chung, E.-S., Cinque, K., Clem, K.R., Coelho, C.A., Cogley, J.G., Coldewey-Egbers, M., Colwell, S., Cooper, O.R., Copland, L., Cosca, C.E., Cross, J.N., Crotwell, M.J., Crouch, J., Davis, S.M., De Eyto, E., De Jeu, R.A.M., De Laat, J., Degasperi, C.L., Degenstein, D., Demircan, M., Derksen, C., Destin, D., Di Girolamo, L., Di Giuseppe, F., Diamond, H.J., Dlugokencky, E.J., Dohan, K., Dokulil, M.T., Dolgov, A.V., Dolman, A.J., Domingues, C.M., Donat, M.G., Dong, S., Dorigo, W.A., Dortch, Q., Doucette, G., Drozdov, D.S., Ducklow, H., Dunn, R.J.H., Durán-Quesada, A.M., Dutton, G.S., Ebrahim, A., Elkharrim, M., Elkins, J.W., Espinoza, J.C., Etienne-Leblanc, S., Evans, T.E., Famiglietti, J.S., Farrell, S., Fateh, S., Fausto, R.S., Fedaeff, N., Feely, R.A., Feng, Z., Fenimore, C., Fettweis, X., Fioletov, V.E., Flemming, J., Fogarty, C.T., Fogt, R.L., Folland, C., Fonseca, C., Fossheim, M., Foster, M.J., Fountain, A., Francis, S.D., Franz, B.A., Frey, R.A., Frith, S.M., Froidevaux, L., Ganter, C., Garzoli, S., Gerland, S., Gobron, N., Goldenberg, S.B., Gomez, R.S., Goni, G., Goto, A., Grooß, J.-U., Gruber, A., Guard, C.C., Gugliemin, M., Gupta, Somil, Gutiérrez, J.M., Hagos, S., Hahn, S., Haimberger, L., Hakkarainen, J., Hall, B.D., Halpert, M.S., Hamlington, B.D., Hanna, E., Hansen, K., Hanssen-Bauer, I., Harris, I., Heidinger, A.K., Heikkilä, A., Heil, A., Heim, R.R., Hendricks, S., Hernández, M., Hidalgo, H.G., Hilburn, K., Ho, S.-P.B., Holmes, R.M., Hu, Z.-Z., Huang, B., Huelsing, H.K., Huffman, G.J., Hughes, C., Hurst, D.F., Ialongo, I., Ijampy, J.A., Ingvaldsen, R.B., Inness, A., Isaksen, K., Ishii, M., Jevrejeva, S., Jiménez, C., Jin, X., Johannesen, E., John, V., Johnsen, B., Johnson, B., Johnson, G.C., Jones, P.D., Joseph, A.C., Jumaux, G., Kabidi, K., Kaiser, J.W., Kato, S., Kazemi, A., Keller, L.M., Kendon, M., Kennedy, J., Kerr, K., Kholodov, A.L., Khoshkam, M., Killick, R., Kim, H., Kim, S.-J., Kimberlain, T.B., Klotzbach, P.J., Knaff, J.A., Kobayashi, S., Kohler, J., Korhonen, J., Korshunova, N.N., Kovacs, K.M., Kramarova, N., Kratz, D.P., Kruger, A., Kruk, M.C., Kudela, R., Kumar, A., Lakatos, M., Lakkala, K., Lander, M.A., Landsea, C.W., Lankhorst, M., Lantz, K., Lazzara, M.A., Lemons, P., Leuliette, E., L’Heureux, M., Lieser, J.L., Lin, I.-I., Liu, H., Liu, Y., Locarnini, R., Loeb, N.G., Lo Monaco, C., Long, C.S., López Álvarez, L.A., Lorrey, A.M., Loyola, D., Lumpkin, R., Luo, J.-J., Luojus, K., Lydersen, C., Lyman, J.M., Maberly, S.C., Maddux, B.C., Malheiros Ramos, A., Malkova, G.V., Manney, G., Marcellin, V., Marchenko, S.S., Marengo, J.A., Marra, J.J., Marszelewski, W., Martens, B., Martínez-Güingla, R., Massom, R.A., Mata, M.M., Mathis, J.T., May, L., Mayer, M., Mazloff, M., McBride, C., McCabe, M.F., McCarthy, M., McClelland, J.W., McGree, S., McVicar, T.R., Mears, C.A., Meier, W., Meinen, C.S., Mekonnen, A., Menéndez, M., Mengistu Tsidu, G., Menzel, W.P., Merchant, C.J., Meredith, M.P., Merrifield, M.A., Metzl, N., Minnis, P., Miralles, D.G., Mistelbauer, T., Mitchum, G.T., Monselesan, D., Monteiro, P., Montzka, S.A., Morice, C., Mote, T., Mudryk, L., Mühle, J., Mullan, A.B., Nash, E.R., Naveira-Garabato, A.C., Nerem, R.S., Newman, P.A., Nieto, J.J., Noetzli, J., O’Neel, S., Osborn, T.J., Overland, J., Oyunjargal, L., Parinussa, R.M., Park, E.-H., Parker, D., Parrington, M., Parsons, A.R., Pasch, R.J., Pascual-Ramírez, R., Paterson, A.M., Paulik, C., Pearce, P.R., Pelto, M.S., Peng, L., Perkins-Kirkpatrick, S.E., Perovich, D., Petropavlovskikh, I., Pezza, A.B., Phillips, D., Pinty, B., Pitts, M.C., Pons, M.R., Porter, A.O., Primicerio, R., Proshutinsky, A., Quegan, S., Quintana, J., Rahimzadeh, F., Rajeevan, M., Randriamarolaza, L., Razuvaev, V.N., Reagan, J., Reid, P., Reimer, C., Rémy, S., Renwick, J.A., Revadekar, J.V., Richter-Menge, J., Riffler, M., Rimmer, A., Rintoul, S., Robinson, D.A., Rodell, M., Rodríguez Solís, J.L., Romanovsky, V.E., Ronchail, J., Rosenlof, K.H., Roth, C., Rusak, J.A., Sabine, C.L., Sallée, J.-B., Sánchez-Lugo, A., Santee, M.L., Sawaengphokhai, P., Sayouri, A., Scambos, T.A., Schemm, J., Schladow, S.G., Schmid, C., Schmid, M., Schmidtko, S., Schreck, C.J., Selkirk, H.B., Send, U., Sensoy, S., Setzer, A., Sharp, M., Shaw, A., Shi, L., Shiklomanov, A.I., Shiklomanov, N.I., Siegel, D.A., Signorini, S.R., Sima, F., Simmons, A.J., Smeets, C.J.P.P., Smith, S.L., Spence, J.M., Srivastava, A.K., Stackhouse, P.W., Stammerjohn, S., Steinbrecht, W., Stella, J.L., Stengel, M., Stennett-Brown, R., Stephenson, T.S., Strahan, S., Streletskiy, D.A., Sun-Mack, S., Swart, S., Sweet, W., Talley, L.D., Tamar, G., Tank, S.E., Taylor, M.A., Tedesco, M., Teubner, K., Thoman, R.L., Thompson, P., Thomson, L., Timmermans, M.-L., Tirnanes, J.A., Tobin, S., Trachte, K., Trainer, V.L., Tretiakov, M., Trewin, B.C., Trotman, A.R., Tschudi, M., Van As, D., Van De Wal, R.S.W., van der A., R.J., Van Der Schalie, R., Van Der Schrier, G., Van Der Werf, G.R., Van Meerbeeck, C.J., Velicogna, I., Verburg, P., Vigneswaran, B., Vincent, L.A., Volkov, D., Vose, R.S., Wagner, W., Wåhlin, A., Wahr, J., Walsh, J., Wang, C., Wang, J., Wang, L., Wang, M., Wang, S.-H., Wanninkhof, R., Watanabe, S., Weber, M., Weller, R.A., Weyhenmeyer, G.A., Whitewood, R., Wijffels, S.E., Wilber, A.C., Wild, J.D., Willett, K.M., Williams, M.J.M., Willie, S., Wolken, G., Wong, T., Wood, E.F., Woolway, R.I., Wouters, B., Xue, Y., Yamada, R., Yim, S.-Y., Yin, X., Young, S.H., Yu, L., Zahid, H., Zambrano, E., Zhang, P., Zhao, G., Zhou, L., Ziemke, J.R., Love-Brotak, S.E., Gilbert, K., Maycock, T., Osborne, S., Sprain, M., Veasey, S.W., Ambrose, B.J., Griffin, J., Misch, D.J., Riddle, D.B., Young, T., Marine and Atmospheric Research, Sub Inorganic Chemistry and Catalysis, Sub Dynamics Meteorology, Sub Soft Condensed Matter, Sub Molecular Microbiology, Sub Physics of devices begr 1/1/17, LS Logica en grondslagen v.d. wiskunde, Sub SIM overig, Zonder bezoldiging NED, Sub General Pharmaceutics, Sub Algemeen Artificial Intelligence, Dynamics of Innovation Systems, Leerstoel Tubergen, Sub Chemical pharmacology, Hafd Faculteitsbureau GW, Sub IER overig, Sub Gen. Pharmacoepi and Clinical Pharm, LS Pharma, Dep IRAS, Environmental Sciences, Environmental Governance, Bureau AW, Sub Ecology and Biodiversity, Marine and Atmospheric Research, Sub Inorganic Chemistry and Catalysis, Sub Dynamics Meteorology, Sub Soft Condensed Matter, Sub Molecular Microbiology, Sub Physics of devices begr 1/1/17, LS Logica en grondslagen v.d. wiskunde, Sub SIM overig, Zonder bezoldiging NED, Sub General Pharmaceutics, Sub Algemeen Artificial Intelligence, Dynamics of Innovation Systems, Leerstoel Tubergen, Sub Chemical pharmacology, Hafd Faculteitsbureau GW, Sub IER overig, Sub Gen. Pharmacoepi and Clinical Pharm, LS Pharma, Dep IRAS, Environmental Sciences, Environmental Governance, Bureau AW, Sub Ecology and Biodiversity, Earth and Climate, Vrije Universiteit Amsterdam, Faculty of Earth and Life Sciences, and Climate Change and Landscape Dynamics

Subjects
Surface (mathematics), Atmospheric Science, 010504 meteorology & atmospheric sciences, 0208 environmental biotechnology, Mineralogy, 02 engineering and technology, 15. Life on land, 01 natural sciences, 020801 environmental engineering, 13. Climate action, F331 Atmospheric Physics, SDG 13 - Climate Action, SDG 14 - Life Below Water, Geology, 0105 earth and related environmental sciences
Abstract

SxviAUGUST 2016|ABSTRACT—J. BLUNDEN AND D. S. ARNDTIn 2015, the dominant greenhouse gases released into Earth’s atmosphere—carbon dioxide, methane, and nitrous oxide—all continued to reach new high levels. At Mauna Loa, Hawaii, the annual CO2 concentration increased by a record 3.1 ppm, exceeding 400 ppm for the first time on record. The 2015 global CO2 average neared this threshold, at 399.4 ppm. Additionally, one of the strongest El Niño events since at least 1950 developed in spring 2015 and continued to evolve through the year. The phenomenon was far reaching, impacting many regions across the globe and affecting most aspects of the climate system.Owing to the combination of El Niño and a long-term up-ward trend, Earth observed record warmth for the second con-secutive year, with the 2015 annual global surface temperature surpassing the previous record by more than 0.1°C and exceed-ing the average for the mid- to late 19th century—commonly considered representative of preindustrial conditions—by more than 1°C for the first time. Above Earth’s surface, lower troposphere temperatures were near-record high.Across land surfaces, record to near-record warmth was reported across every inhabited continent. Twelve countries, including Russia and China, reported record high annual tem-peratures. In June, one of the most severe heat waves since 1980 affected Karachi, Pakistan, claiming over 1000 lives. On 27 October, Vredendal, South Africa, reached 48.4°C, a new global high temperature record for this month. In the Arctic, the 2015 land surface temperature was 1.2°C above the 1981–2010 average, tying 2007 and 2011 for the high-est annual temperature and representing a 2.8°C increase since the record began in 1900. Increasing temperatures have led to decreasing Arctic sea ice extent and thickness. On 25 February 2015, the lowest maximum sea ice extent in the 37-year satel-lite record was observed, 7% below the 1981–2010 average. Mean sea surface temperatures across the Arctic Ocean dur-ing August in ice-free regions, representative of Arctic Ocean summer anomalies, ranged from ~0°C to 8°C above average. As a consequence of sea ice retreat and warming oceans, vast walrus herds in the Pacific Arctic are hauling out on land rather than on sea ice, raising concern about the energetics of females and young animals. Increasing temperatures in the Barents Sea are linked to a community-wide shift in fish populations: boreal communities are now farther north, and long-standing Arctic species have been almost pushed out of the area.Above average sea surface temperatures are not confined to the Arctic. Sea surface temperature for 2015 was record high at the global scale; however, the North Atlantic southeast of Greenland remained colder than average and colder than 2014. Global annual ocean heat content and mean sea level also reached new record highs. The Greenland Ice Sheet, with the capacity to contribute ~7 m to sea level rise, experienced melting over more than 50% of its surface for the first time since the record melt of 2012.Other aspects of the cryosphere were remarkable. Alpine glacier retreat continued, and preliminary data indicate that 2015 is the 36th consecutive year of negative annual mass balance. Across the Northern Hemisphere, late-spring snow cover extent continued its trend of decline, with June the sec-ond lowest in the 49-year satellite record. Below the surface, record high temperatures at 20-m depth were measured at all permafrost observatories on the North Slope of Alaska, increasing by up to 0.66°C decade–1 since 2000. In the Antarctic, surface pressure and temperatures were lower than the 1981–2010 average for most of the year, consis-tent with the primarily positive southern annular mode, which saw a record high index value of +4.92 in February. Antarctic sea ice extent and area had large intra-annual variability, with a shift from record high levels in May to record low levels in August. Springtime ozone depletion resulted in one of the largest and most persistent Antarctic ozone holes observed since the 1990s.Closer to the equator, 101 named tropical storms were observed in 2015, well above the 1981–2010 average of 82. The eastern/central Pacific had 26 named storms, the most since 1992. The western north Pacific and north and south Indian Ocean basins also saw high activity. Globally, eight tropical cyclones reached the Saffir–Simpson Category 5 intensity level.Overlaying a general increase in the hydrologic cycle, the strong El Niño enhanced precipitation variability around the world. An above-normal rainy season led to major floods in Paraguay, Bolivia, and southern Brazil. In May, the United States recorded its all-time wettest month in its 121-year national record. Denmark and Norway reported their second and third wettest year on record, respectively, but globally soil moisture was below average, terrestrial groundwater storage was the lowest in the 14-year record, and areas in “severe” drought rose from 8% in 2014 to 14% in 2015. Drought conditions prevailed across many Caribbean island nations, Colombia, Venezuela, and northeast Brazil for most of the year. Several South Pacific countries also experienced drought. Lack of rainfall across Ethiopia led to its worst drought in decades and affected millions of people, while prolonged drought in South Africa severely affected agricultural production. Indian summer monsoon rainfall was just 86% of average. Extremely dry conditions in Indonesia resulted in intense and widespread fires during August–November that produced abundant car-bonaceous aerosols, carbon monoxide, and ozone. Overall, emissions from tropical Asian biomass burning in 2015 were almost three times the 2001–14 average.

Published
2016

40. A carbon budget for the Amundsen Sea Polynya, Antarctica : Estimating net community production and export in a highly productive polar ecosystem

Author

Yager, P. L., Sherrell, R. M., Stammerjohn, S. E., Ducklow, H. W., Schofield, O. M. E., Ingall, E. D., Wilson, S. E., Lowry, K. E., Williams, C. M., Riemann, Lasse, Bertilsson, S., Alderkamp, A-C, Dinasquet, Julie, Logares, R., Richert, I., Sipler, R. E., Melara, A. J., Mu, L., Newstead, R. G., Post, A. F., Swalethorp, R., van Dijken, G. L., Yager, P. L., Sherrell, R. M., Stammerjohn, S. E., Ducklow, H. W., Schofield, O. M. E., Ingall, E. D., Wilson, S. E., Lowry, K. E., Williams, C. M., Riemann, Lasse, Bertilsson, S., Alderkamp, A-C, Dinasquet, Julie, Logares, R., Richert, I., Sipler, R. E., Melara, A. J., Mu, L., Newstead, R. G., Post, A. F., Swalethorp, R., and van Dijken, G. L.

Abstract

Polynyas, or recurring areas of seasonally open water surrounded by sea ice, are foci for energy and material transfer between the atmosphere and the polar ocean. They are also climate sensitive, with both sea ice extent and glacial melt influencing their productivity. The Amundsen Sea Polynya (ASP) is the greenest polynya in the Southern Ocean, with summertime chlorophyll a concentrations exceeding 20 mu g L-1. During the Amundsen Sea Polynya International Research Expedition (ASPIRE) in austral summer 2010-11, we aimed to determine the fate of this high algal productivity. We collected water column profiles for total dissolved inorganic carbon (DIC) and nutrients, particulate and dissolved organic matter, chlorophyll a, mesozoo-plankton, and microbial biomass to make a carbon budget for this ecosystem. We also measured primary and secondary production, community respiration rates, vertical particle flux and fecal pellet production and grazing. With observations arranged along a gradient of increasing integrated dissolved inorganic nitrogen drawdown (Delta DIN; 0.027-0.74 mol N m(-2)), changes in DIC in the upper water column (ranging from 0.2 to 4.7 mol C m(-2)) and gas exchange (0-1.7 mol C m(-2)) were combined to estimate early season net community production (sNCP; 0.2-5.9 mol C m(-2)) and then compared to organic matter inventories to estimate export. From a phytoplankton bloom dominated by Phaeocystis antarctica, a high fraction (up to similar to 60%) of sNCP was exported to sub-euphotic depths. Microbial respiration remineralized much of this export in the mid waters. Comparisons to short-term (2-3 days) drifting traps and a year-long moored sediment trap capturing the downward flux confirmed that a relatively high fraction (3-6%) of the export from similar to 100 m made it through the mid waters to depth. We discuss the climate-sensitive nature of these carbon fluxes, in light of the changing sea ice cover and melting ice sheets in the region.

Published
2016
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41. State of the climate in 2015

Author

Marine and Atmospheric Research, Sub Inorganic Chemistry and Catalysis, Sub Dynamics Meteorology, Sub Soft Condensed Matter, Sub Molecular Microbiology, Sub Physics of devices begr 1/1/17, LS Logica en grondslagen v.d. wiskunde, Sub SIM overig, Zonder bezoldiging NED, Sub General Pharmaceutics, Sub Algemeen Artificial Intelligence, Dynamics of Innovation Systems, Leerstoel Tubergen, Sub Chemical pharmacology, Hafd Faculteitsbureau GW, Sub ISEP overig, Sub Gen. Pharmacoepi and Clinical Pharm, LS Pharma, Dep IRAS, Environmental Sciences, Environmental Governance, Bureau AW, Sub Ecology and Biodiversity, Aaron-Morrison, A.P., Ackerman, S.A., Adams, N.G., Adler, R.F., Albanil, A., Alfaro, E.J., Allan, R., Alves, L.M., Amador, J.A., Andreassen, L.M., Arendt, A., Arévalo, J., Arndt, D.S., Arzhanova, N.M., Aschan, M.M., Azorin-Molina, C., Banzon, V., Bardin, M.U., Barichivich, J., Baringer, M.O., Barreira, S., Baxter, S., Bazo, J., Becker, A., Bedka, K.M., Behrenfeld, M.J., Bell, G.D., Belmont, M., Benedetti, A., Bernhard, G., Berrisford, P., Berry, D.I., Bettolli, M.L., Bhatt, U.S., Bidegain, M., Bill, B.D., Billheimer, S., Bissolli, P., Blake, E.S., Blunden, J., Bosilovich, M.G., Boucher, O., Boudet, D., Box, J.E., Boyer, T., Braathen, G.O., Bromwich, D.H., Brown, R., Bulygina, O.N., Burgess, D., Calderón, B., Camargo, S.J., Campbell, J.D., Cappelen, J., Carrasco, G., Carter, B.R., Chambers, D.P., Chandler, E., Christiansen, H.H., Christy, J.R., Chung, D., Chung, E.-S., Cinque, K., Clem, K.R., Coelho, C.A., Cogley, J.G., Coldewey-Egbers, M., Colwell, S., Cooper, O.R., Copland, L., Cosca, C.E., Cross, J.N., Crotwell, M.J., Crouch, J., Davis, S.M., De Eyto, E., De Jeu, R.A.M., De Laat, J., Degasperi, C.L., Degenstein, D., Demircan, M., Derksen, C., Destin, D., Di Girolamo, L., Di Giuseppe, F., Diamond, H.J., Dlugokencky, E.J., Dohan, K., Dokulil, M.T., Dolgov, A.V., Dolman, A.J., Domingues, C.M., Donat, M.G., Dong, S., Dorigo, W.A., Dortch, Q., Doucette, G., Drozdov, D.S., Ducklow, H., Dunn, R.J.H., Durán-Quesada, A.M., Dutton, G.S., Ebrahim, A., Elkharrim, M., Elkins, J.W., Espinoza, J.C., Etienne-Leblanc, S., Evans, T.E., Famiglietti, J.S., Farrell, S., Fateh, S., Fausto, R.S., Fedaeff, N., Feely, R.A., Feng, Z., Fenimore, C., Fettweis, X., Fioletov, V.E., Flemming, J., Fogarty, C.T., Fogt, R.L., Folland, C., Fonseca, C., Fossheim, M., Foster, M.J., Fountain, A., Francis, S.D., Franz, B.A., Frey, R.A., Frith, S.M., Froidevaux, L., Ganter, C., Garzoli, S., Gerland, S., Gobron, N., Goldenberg, S.B., Gomez, R.S., Goni, G., Goto, A., Grooß, J.-U., Gruber, A., Guard, C.C., Gugliemin, M., Gupta, Somil, Gutiérrez, J.M., Hagos, S., Hahn, S., Haimberger, L., Hakkarainen, J., Hall, B.D., Halpert, M.S., Hamlington, B.D., Hanna, E., Hansen, K., Hanssen-Bauer, I., Harris, I., Heidinger, A.K., Heikkilä, A., Heil, A., Heim, R.R., Hendricks, S., Hernández, M., Hidalgo, H.G., Hilburn, K., Ho, S.-P.B., Holmes, R.M., Hu, Z.-Z., Huang, B., Huelsing, H.K., Huffman, G.J., Hughes, C., Hurst, D.F., Ialongo, I., Ijampy, J.A., Ingvaldsen, R.B., Inness, A., Isaksen, K., Ishii, M., Jevrejeva, S., Jiménez, C., Jin, X., Johannesen, E., John, V., Johnsen, B., Johnson, B., Johnson, G.C., Jones, P.D., Joseph, A.C., Jumaux, G., Kabidi, K., Kaiser, J.W., Kato, S., Kazemi, A., Keller, L.M., Kendon, M., Kennedy, J., Kerr, K., Kholodov, A.L., Khoshkam, M., Killick, R., Kim, H., Kim, S.-J., Kimberlain, T.B., Klotzbach, P.J., Knaff, J.A., Kobayashi, S., Kohler, J., Korhonen, J., Korshunova, N.N., Kovacs, K.M., Kramarova, N., Kratz, D.P., Kruger, A., Kruk, M.C., Kudela, R., Kumar, A., Lakatos, M., Lakkala, K., Lander, M.A., Landsea, C.W., Lankhorst, M., Lantz, K., Lazzara, M.A., Lemons, P., Leuliette, E., L’Heureux, M., Lieser, J.L., Lin, I.-I., Liu, H., Liu, Y., Locarnini, R., Loeb, N.G., Lo Monaco, C., Long, C.S., López Álvarez, L.A., Lorrey, A.M., Loyola, D., Lumpkin, R., Luo, J.-J., Luojus, K., Lydersen, C., Lyman, J.M., Maberly, S.C., Maddux, B.C., Malheiros Ramos, A., Malkova, G.V., Manney, G., Marcellin, V., Marchenko, S.S., Marengo, J.A., Marra, J.J., Marszelewski, W., Martens, B., Martínez-Güingla, R., Massom, R.A., Mata, M.M., Mathis, J.T., May, L., Mayer, M., Mazloff, M., McBride, C., McCabe, M.F., McCarthy, M., McClelland, J.W., McGree, S., McVicar, T.R., Mears, C.A., Meier, W., Meinen, C.S., Mekonnen, A., Menéndez, M., Mengistu Tsidu, G., Menzel, W.P., Merchant, C.J., Meredith, M.P., Merrifield, M.A., Metzl, N., Minnis, P., Miralles, D.G., Mistelbauer, T., Mitchum, G.T., Monselesan, D., Monteiro, P., Montzka, S.A., Morice, C., Mote, T., Mudryk, L., Mühle, J., Mullan, A.B., Nash, E.R., Naveira-Garabato, A.C., Nerem, R.S., Newman, P.A., Nieto, J.J., Noetzli, J., O’Neel, S., Osborn, T.J., Overland, J., Oyunjargal, L., Parinussa, R.M., Park, E.-H., Parker, D., Parrington, M., Parsons, A.R., Pasch, R.J., Pascual-Ramírez, R., Paterson, A.M., Paulik, C., Pearce, P.R., Pelto, M.S., Peng, L., Perkins-Kirkpatrick, S.E., Perovich, D., Petropavlovskikh, I., Pezza, A.B., Phillips, D., Pinty, B., Pitts, M.C., Pons, M.R., Porter, A.O., Primicerio, R., Proshutinsky, A., Quegan, S., Quintana, J., Rahimzadeh, F., Rajeevan, M., Randriamarolaza, L., Razuvaev, V.N., Reagan, J., Reid, P., Reimer, C., Rémy, S., Renwick, J.A., Revadekar, J.V., Richter-Menge, J., Riffler, M., Rimmer, A., Rintoul, S., Robinson, D.A., Rodell, M., Rodríguez Solís, J.L., Romanovsky, V.E., Ronchail, J., Rosenlof, K.H., Roth, C., Rusak, J.A., Sabine, C.L., Sallée, J.-B., Sánchez-Lugo, A., Santee, M.L., Sawaengphokhai, P., Sayouri, A., Scambos, T.A., Schemm, J., Schladow, S.G., Schmid, C., Schmid, M., Schmidtko, S., Schreck, C.J., Selkirk, H.B., Send, U., Sensoy, S., Setzer, A., Sharp, M., Shaw, A., Shi, L., Shiklomanov, A.I., Shiklomanov, N.I., Siegel, D.A., Signorini, S.R., Sima, F., Simmons, A.J., Smeets, C.J.P.P., Smith, S.L., Spence, J.M., Srivastava, A.K., Stackhouse, P.W., Stammerjohn, S., Steinbrecht, W., Stella, J.L., Stengel, M., Stennett-Brown, R., Stephenson, T.S., Strahan, S., Streletskiy, D.A., Sun-Mack, S., Swart, S., Sweet, W., Talley, L.D., Tamar, G., Tank, S.E., Taylor, M.A., Tedesco, M., Teubner, K., Thoman, R.L., Thompson, P., Thomson, L., Timmermans, M.-L., Tirnanes, J.A., Tobin, S., Trachte, K., Trainer, V.L., Tretiakov, M., Trewin, B.C., Trotman, A.R., Tschudi, M., Van As, D., Van De Wal, R.S.W., van der A., R.J., Van Der Schalie, R., Van Der Schrier, G., Van Der Werf, G.R., Van Meerbeeck, C.J., Velicogna, I., Verburg, P., Vigneswaran, B., Vincent, L.A., Volkov, D., Vose, R.S., Wagner, W., Wåhlin, A., Wahr, J., Walsh, J., Wang, C., Wang, J., Wang, L., Wang, M., Wang, S.-H., Wanninkhof, R., Watanabe, S., Weber, M., Weller, R.A., Weyhenmeyer, G.A., Whitewood, R., Wijffels, S.E., Wilber, A.C., Wild, J.D., Willett, K.M., Williams, M.J.M., Willie, S., Wolken, G., Wong, T., Wood, E.F., Woolway, R.I., Wouters, B., Xue, Y., Yamada, R., Yim, S.-Y., Yin, X., Young, S.H., Yu, L., Zahid, H., Zambrano, E., Zhang, P., Zhao, G., Zhou, L., Ziemke, J.R., Love-Brotak, S.E., Gilbert, K., Maycock, T., Osborne, S., Sprain, M., Veasey, S.W., Ambrose, B.J., Griffin, J., Misch, D.J., Riddle, D.B., Young, T., Marine and Atmospheric Research, Sub Inorganic Chemistry and Catalysis, Sub Dynamics Meteorology, Sub Soft Condensed Matter, Sub Molecular Microbiology, Sub Physics of devices begr 1/1/17, LS Logica en grondslagen v.d. wiskunde, Sub SIM overig, Zonder bezoldiging NED, Sub General Pharmaceutics, Sub Algemeen Artificial Intelligence, Dynamics of Innovation Systems, Leerstoel Tubergen, Sub Chemical pharmacology, Hafd Faculteitsbureau GW, Sub ISEP overig, Sub Gen. Pharmacoepi and Clinical Pharm, LS Pharma, Dep IRAS, Environmental Sciences, Environmental Governance, Bureau AW, Sub Ecology and Biodiversity, Aaron-Morrison, A.P., Ackerman, S.A., Adams, N.G., Adler, R.F., Albanil, A., Alfaro, E.J., Allan, R., Alves, L.M., Amador, J.A., Andreassen, L.M., Arendt, A., Arévalo, J., Arndt, D.S., Arzhanova, N.M., Aschan, M.M., Azorin-Molina, C., Banzon, V., Bardin, M.U., Barichivich, J., Baringer, M.O., Barreira, S., Baxter, S., Bazo, J., Becker, A., Bedka, K.M., Behrenfeld, M.J., Bell, G.D., Belmont, M., Benedetti, A., Bernhard, G., Berrisford, P., Berry, D.I., Bettolli, M.L., Bhatt, U.S., Bidegain, M., Bill, B.D., Billheimer, S., Bissolli, P., Blake, E.S., Blunden, J., Bosilovich, M.G., Boucher, O., Boudet, D., Box, J.E., Boyer, T., Braathen, G.O., Bromwich, D.H., Brown, R., Bulygina, O.N., Burgess, D., Calderón, B., Camargo, S.J., Campbell, J.D., Cappelen, J., Carrasco, G., Carter, B.R., Chambers, D.P., Chandler, E., Christiansen, H.H., Christy, J.R., Chung, D., Chung, E.-S., Cinque, K., Clem, K.R., Coelho, C.A., Cogley, J.G., Coldewey-Egbers, M., Colwell, S., Cooper, O.R., Copland, L., Cosca, C.E., Cross, J.N., Crotwell, M.J., Crouch, J., Davis, S.M., De Eyto, E., De Jeu, R.A.M., De Laat, J., Degasperi, C.L., Degenstein, D., Demircan, M., Derksen, C., Destin, D., Di Girolamo, L., Di Giuseppe, F., Diamond, H.J., Dlugokencky, E.J., Dohan, K., Dokulil, M.T., Dolgov, A.V., Dolman, A.J., Domingues, C.M., Donat, M.G., Dong, S., Dorigo, W.A., Dortch, Q., Doucette, G., Drozdov, D.S., Ducklow, H., Dunn, R.J.H., Durán-Quesada, A.M., Dutton, G.S., Ebrahim, A., Elkharrim, M., Elkins, J.W., Espinoza, J.C., Etienne-Leblanc, S., Evans, T.E., Famiglietti, J.S., Farrell, S., Fateh, S., Fausto, R.S., Fedaeff, N., Feely, R.A., Feng, Z., Fenimore, C., Fettweis, X., Fioletov, V.E., Flemming, J., Fogarty, C.T., Fogt, R.L., Folland, C., Fonseca, C., Fossheim, M., Foster, M.J., Fountain, A., Francis, S.D., Franz, B.A., Frey, R.A., Frith, S.M., Froidevaux, L., Ganter, C., Garzoli, S., Gerland, S., Gobron, N., Goldenberg, S.B., Gomez, R.S., Goni, G., Goto, A., Grooß, J.-U., Gruber, A., Guard, C.C., Gugliemin, M., Gupta, Somil, Gutiérrez, J.M., Hagos, S., Hahn, S., Haimberger, L., Hakkarainen, J., Hall, B.D., Halpert, M.S., Hamlington, B.D., Hanna, E., Hansen, K., Hanssen-Bauer, I., Harris, I., Heidinger, A.K., Heikkilä, A., Heil, A., Heim, R.R., Hendricks, S., Hernández, M., Hidalgo, H.G., Hilburn, K., Ho, S.-P.B., Holmes, R.M., Hu, Z.-Z., Huang, B., Huelsing, H.K., Huffman, G.J., Hughes, C., Hurst, D.F., Ialongo, I., Ijampy, J.A., Ingvaldsen, R.B., Inness, A., Isaksen, K., Ishii, M., Jevrejeva, S., Jiménez, C., Jin, X., Johannesen, E., John, V., Johnsen, B., Johnson, B., Johnson, G.C., Jones, P.D., Joseph, A.C., Jumaux, G., Kabidi, K., Kaiser, J.W., Kato, S., Kazemi, A., Keller, L.M., Kendon, M., Kennedy, J., Kerr, K., Kholodov, A.L., Khoshkam, M., Killick, R., Kim, H., Kim, S.-J., Kimberlain, T.B., Klotzbach, P.J., Knaff, J.A., Kobayashi, S., Kohler, J., Korhonen, J., Korshunova, N.N., Kovacs, K.M., Kramarova, N., Kratz, D.P., Kruger, A., Kruk, M.C., Kudela, R., Kumar, A., Lakatos, M., Lakkala, K., Lander, M.A., Landsea, C.W., Lankhorst, M., Lantz, K., Lazzara, M.A., Lemons, P., Leuliette, E., L’Heureux, M., Lieser, J.L., Lin, I.-I., Liu, H., Liu, Y., Locarnini, R., Loeb, N.G., Lo Monaco, C., Long, C.S., López Álvarez, L.A., Lorrey, A.M., Loyola, D., Lumpkin, R., Luo, J.-J., Luojus, K., Lydersen, C., Lyman, J.M., Maberly, S.C., Maddux, B.C., Malheiros Ramos, A., Malkova, G.V., Manney, G., Marcellin, V., Marchenko, S.S., Marengo, J.A., Marra, J.J., Marszelewski, W., Martens, B., Martínez-Güingla, R., Massom, R.A., Mata, M.M., Mathis, J.T., May, L., Mayer, M., Mazloff, M., McBride, C., McCabe, M.F., McCarthy, M., McClelland, J.W., McGree, S., McVicar, T.R., Mears, C.A., Meier, W., Meinen, C.S., Mekonnen, A., Menéndez, M., Mengistu Tsidu, G., Menzel, W.P., Merchant, C.J., Meredith, M.P., Merrifield, M.A., Metzl, N., Minnis, P., Miralles, D.G., Mistelbauer, T., Mitchum, G.T., Monselesan, D., Monteiro, P., Montzka, S.A., Morice, C., Mote, T., Mudryk, L., Mühle, J., Mullan, A.B., Nash, E.R., Naveira-Garabato, A.C., Nerem, R.S., Newman, P.A., Nieto, J.J., Noetzli, J., O’Neel, S., Osborn, T.J., Overland, J., Oyunjargal, L., Parinussa, R.M., Park, E.-H., Parker, D., Parrington, M., Parsons, A.R., Pasch, R.J., Pascual-Ramírez, R., Paterson, A.M., Paulik, C., Pearce, P.R., Pelto, M.S., Peng, L., Perkins-Kirkpatrick, S.E., Perovich, D., Petropavlovskikh, I., Pezza, A.B., Phillips, D., Pinty, B., Pitts, M.C., Pons, M.R., Porter, A.O., Primicerio, R., Proshutinsky, A., Quegan, S., Quintana, J., Rahimzadeh, F., Rajeevan, M., Randriamarolaza, L., Razuvaev, V.N., Reagan, J., Reid, P., Reimer, C., Rémy, S., Renwick, J.A., Revadekar, J.V., Richter-Menge, J., Riffler, M., Rimmer, A., Rintoul, S., Robinson, D.A., Rodell, M., Rodríguez Solís, J.L., Romanovsky, V.E., Ronchail, J., Rosenlof, K.H., Roth, C., Rusak, J.A., Sabine, C.L., Sallée, J.-B., Sánchez-Lugo, A., Santee, M.L., Sawaengphokhai, P., Sayouri, A., Scambos, T.A., Schemm, J., Schladow, S.G., Schmid, C., Schmid, M., Schmidtko, S., Schreck, C.J., Selkirk, H.B., Send, U., Sensoy, S., Setzer, A., Sharp, M., Shaw, A., Shi, L., Shiklomanov, A.I., Shiklomanov, N.I., Siegel, D.A., Signorini, S.R., Sima, F., Simmons, A.J., Smeets, C.J.P.P., Smith, S.L., Spence, J.M., Srivastava, A.K., Stackhouse, P.W., Stammerjohn, S., Steinbrecht, W., Stella, J.L., Stengel, M., Stennett-Brown, R., Stephenson, T.S., Strahan, S., Streletskiy, D.A., Sun-Mack, S., Swart, S., Sweet, W., Talley, L.D., Tamar, G., Tank, S.E., Taylor, M.A., Tedesco, M., Teubner, K., Thoman, R.L., Thompson, P., Thomson, L., Timmermans, M.-L., Tirnanes, J.A., Tobin, S., Trachte, K., Trainer, V.L., Tretiakov, M., Trewin, B.C., Trotman, A.R., Tschudi, M., Van As, D., Van De Wal, R.S.W., van der A., R.J., Van Der Schalie, R., Van Der Schrier, G., Van Der Werf, G.R., Van Meerbeeck, C.J., Velicogna, I., Verburg, P., Vigneswaran, B., Vincent, L.A., Volkov, D., Vose, R.S., Wagner, W., Wåhlin, A., Wahr, J., Walsh, J., Wang, C., Wang, J., Wang, L., Wang, M., Wang, S.-H., Wanninkhof, R., Watanabe, S., Weber, M., Weller, R.A., Weyhenmeyer, G.A., Whitewood, R., Wijffels, S.E., Wilber, A.C., Wild, J.D., Willett, K.M., Williams, M.J.M., Willie, S., Wolken, G., Wong, T., Wood, E.F., Woolway, R.I., Wouters, B., Xue, Y., Yamada, R., Yim, S.-Y., Yin, X., Young, S.H., Yu, L., Zahid, H., Zambrano, E., Zhang, P., Zhao, G., Zhou, L., Ziemke, J.R., Love-Brotak, S.E., Gilbert, K., Maycock, T., Osborne, S., Sprain, M., Veasey, S.W., Ambrose, B.J., Griffin, J., Misch, D.J., Riddle, D.B., and Young, T.

Published
2016

42. Emerging trends in the sea state of the Beaufort and Chukchi seas

Author

Thomson, J, Fan, Y, Stammerjohn, S, Stopa, J, Rogers, WE, Girard-Ardhuin, F, Ardhuin, F, Shen, H, Perrie, W, Ackley, S, Babanin, A, Liu, Q, Guest, P, Maksym, T, Wadhams, P, Fairall, C, Persson, O, Doble, M, Graber, H, Lund, B, Squire, V, Gemmrich, J, Lehner, S, Holt, B, Meylan, M, Brozena, J, Bidlot, J-R, Thomson, J, Fan, Y, Stammerjohn, S, Stopa, J, Rogers, WE, Girard-Ardhuin, F, Ardhuin, F, Shen, H, Perrie, W, Ackley, S, Babanin, A, Liu, Q, Guest, P, Maksym, T, Wadhams, P, Fairall, C, Persson, O, Doble, M, Graber, H, Lund, B, Squire, V, Gemmrich, J, Lehner, S, Holt, B, Meylan, M, Brozena, J, and Bidlot, J-R

Published
2016

43. A carbon budget for the Amundsen Sea Polynya, Antarctica:estimating net community production and export in a highly productive polar ecosystem

Author

Yager, P. L., Sherrell, R. M., Stammerjohn, S. E., Ducklow, H. W., Schofield, O. M. E., Ingall, E. D., Wilson, S. E., Lowry, K. E., Williams, C. M., Riemann, Lasse, Bertilsson, S., Alderkamp, A.-C., Dinasquet, Julie Vanessa, Logares, R., Richert, I., Sipler, R. E., Melara, A. J., Mu, L., Newstead, R. G., Post, A. F., Swalethorp, R., van Dijken, G. L., Yager, P. L., Sherrell, R. M., Stammerjohn, S. E., Ducklow, H. W., Schofield, O. M. E., Ingall, E. D., Wilson, S. E., Lowry, K. E., Williams, C. M., Riemann, Lasse, Bertilsson, S., Alderkamp, A.-C., Dinasquet, Julie Vanessa, Logares, R., Richert, I., Sipler, R. E., Melara, A. J., Mu, L., Newstead, R. G., Post, A. F., Swalethorp, R., and van Dijken, G. L.

Published
2016

44. A carbon budget for the Amundsen Sea Polynya, Antarctica: Estimating net community production and export in a highly productive polar ecosystem

Author

Yager , Patricia L., Sherrell, R. M., Stammerjohn, S. E., Ducklow, H. W., Schofield, O. M. E., Ingall, E. D., Wilson, S. E., Lowry, K. E., Williams, C. M., Riemann, L., Bertilsson, S., Alderkamp, A. C., Dinasquet, J., Logares, R., Melara, A. J., Mu, L.., Newstead, R. G., Post, A., Swalethorp, Rasmus, van Dijken, G., Yager , Patricia L., Sherrell, R. M., Stammerjohn, S. E., Ducklow, H. W., Schofield, O. M. E., Ingall, E. D., Wilson, S. E., Lowry, K. E., Williams, C. M., Riemann, L., Bertilsson, S., Alderkamp, A. C., Dinasquet, J., Logares, R., Melara, A. J., Mu, L.., Newstead, R. G., Post, A., Swalethorp, Rasmus, and van Dijken, G.

Published
2016

46. Freshwater distributions and water mass structure in the Amundsen Sea Polynya region, Antarctica

Author

Randall-Goodwin, E., Meredith, M. P., Jenkins, A., Yager, P. L., Sherrell, R. M., Abrahamsen, E. P., Guerrero, R., Yuan, X., Mortlock, R. A., Gavahan, K., Alderkamp, A.-C., Ducklow, H., Robertson, R., Stammerjohn, S. E., Randall-Goodwin, E., Meredith, M. P., Jenkins, A., Yager, P. L., Sherrell, R. M., Abrahamsen, E. P., Guerrero, R., Yuan, X., Mortlock, R. A., Gavahan, K., Alderkamp, A.-C., Ducklow, H., Robertson, R., and Stammerjohn, S. E.

Abstract

We present the first densely-sampled hydrographic survey of the Amundsen Sea Polynya (ASP) region, including a detailed characterization of its freshwater distributions. Multiple components contribute to the freshwater budget, including precipitation, sea ice melt, basal ice shelf melt, and iceberg melt, from local and non-local sources. We used stable oxygen isotope ratios in seawater (δ18O) to distinguish quantitatively the contributions from sea ice and meteoric-derived sources. Meteoric fractions were high throughout the winter mixed layer (WML), with maximum values of 2–3% (±0.5%). Because the ASP region is characterized by deep WMLs, column inventories of total meteoric water were also high, ranging from 10–13 m (±2 m) adjacent to the Dotson Ice Shelf (DIS) and in the deep trough to 7–9 m (±2 m) in shallower areas. These inventories are at least twice those reported for continental shelf waters near the western Antarctic Peninsula. Sea ice melt fractions were mostly negative, indicating net (annual) sea ice formation, consistent with this area being an active polynya. Independently determined fractions of subsurface glacial meltwater (as one component of the total meteoric inventory) had maximum values of 1–2% (±0.5%), with highest and shallowest maximum values at the DIS outflow (80–90 m) and in iceberg-stirred waters (150–200 m). In addition to these upwelling sites, contributions of subsurface glacial meltwater could be traced at depth along the ~ 27.6 isopycnal, from which it mixes into the WML through various processes. Our results suggest a quasi-continuous supply of melt-laden iron-enriched seawater to the euphotic zone of the ASP and help to explain why the ASP is Antarctica’s most biologically productive polynya per unit area.

Published
2015

47. Sea state and boundary layer physics of the emerging arctic ocean

Author

Thomson, J., Squire, V., Ackley, S., Rogers, E., Babanin, Alexander, Guest, P., Maksym, T., Wadhams, P., Stammerjohn, S., Fairall, C., Perrson, O., Doble, M., Graber, H., Shen, H., Gemmrich, J., Lehner, Susanne, Holt, B., Williams, T., Meylan, M., and Bidlot, J.

Subjects
Beaufort Sea, Arctic Ocean, marginal ice zone, Chukchi Sea, sea ice
Published
2013

48. STATE OF THE CLIMATE IN 2011 Special Supplement to the Bulletin of the American Meteorological Society Vol. 93, No. 7, July 2012

Author

Arndt, D. S., Blunden, J., Willett, K. M., Dolman, A. J., Hall, B. D., Thorne, P. W., Gregg, M. C., Newlin, M. L., Xue, Y., Hu, Z., Kumar, A., Banzon, V., Smith, T. M., Rayner, N. A., Jeffries, M. O., Richter-Menge, J., Overland, J., Bhatt, U., Key, J., Liu, Y., Walsh, J., Wang, M., Fogt, R. L., Scambos, T. A., Wovrosh, A. J., Barreira, S., Sanchez-Lugo, A., Renwick, J. A., Thiaw, W. M., Weaver, S. J., Whitewood, R., Phillips, D., Achberger, C., Ackerman, S. A., Ahmed, F. H., Albanil-Encarnacion, A., Alfaro, E. J., Alves, L. M., Allan, R., Amador, J. A., Ambenje, P., Antoine, M. D., Antonov, J., Arevalo, J., Ashik, I., Atheru, Z., Baccini, A., Baez, J., Baringer, M. O., Barriopedro, D. E., Bates, J. J., Becker, A., Behrenfeld, M. J., Bell, G. D., Benedetti, A., Bernhard, G., Berrisford, P., Berry, D. I., Beszczynska-Moeller, A., Bhatt, U. S., Bidegain, M., Bieniek, P., Birkett, C., Bissolli, P., Blake, E. S., Boudet-Rouco, D., Box, J. E., Boyer, T., Braathen, G. O., Brackenridge, G. R., Brohan, P., Bromwich, D. H., Brown, L., Brown, R., Bruhwiler, L., Bulygina, O. N., Burrows, J., Calderon, B., Camargo, S. J., Cappellen, J., Carmack, E., Carrasco, G., Chambers, D. P., Christiansen, H. H., Christy, J., Chung, D., Ciais, P., Coehlo, C. A. S., Colwell, S., Comiso, J., Cretaux, J. F., Crouch, J., Cunningham, S. A., Jeu, R. A. M., Demircan, M., Derksen, C., Diamond, H. J., Dlugokencky, E. J., Dohan, K., Dorigo, W. A., Drozdov, D. S., Duguay, C., Dutton, E., Dutton, G. S., Elkins, J. W., Epstein, H. E., Famiglietti, J. S., Fanton D Andon, O. H., Feely, R. A., Fekete, B. M., Fenimore, C., Fernandez-Prieto, D., Fields, E., Fioletov, V., Folland, C., Foster, M. J., Frajka-Williams, E., Franz, B. A., Frey, K., Frith, S. H., Frolov, I., Frost, G. V., Ganter, C., Garzoli, S., Gitau, W., Gleason, K. L., Gobron, N., Goldenberg, S. B., Goni, G., Gonzalez-Garcia, I., Gonzalez-Rodriguez, N., Good, S. A., Goryl, P., Gottschalck, J., Gouveia, C. M., Griffiths, G. M., Grigoryan, V., Grooss, J. U., Guard, C., Guglielmin, M., Halpert, M. S., Heidinger, A. K., Heikkila, A., Heim, R. R., Hennon, P. A., Hidalgo, H. G., Hilburn, K., Ho, S. P., Hobbs, W. R., Holgate, S., Hook, S. J., Hovsepyan, A., Hu, Z. Z., Hugony, S., Hurst, D. F., Ingvaldsen, R., Itoh, M., Jaimes, E., Jeffries, M., Johns, W. E., Johnsen, B., Johnson, B., Johnson, G. C., Jones, L. T., Jumaux, G., Kabidi, K., Kaiser, J. W., Kang, K. K., Kanzow, T. O., Kao, H. Y., Keller, L. M., Kendon, M., Kennedy, J. J., Kervankiran, S., Khatiwala, S., Kholodov, A. L., Khoshkam, M., Kikuchi, T., Kimberlain, T. B., King, D., Knaff, J. A., Korshunova, N. N., Koskela, T., Kratz, D. P., Krishfield, R., Kruger, A., Kruk, M. C., Lagerloef, G., Lakkala, K., Lammers, R. B., Lander, M. A., Landsea, C. W., Lankhorst, M., Lapinel-Pedroso, B., Lazzara, M. A., Leduc, S., Lefale, P., Leon, G., Leon-Lee, A., Leuliette, E., Levitus, S., L Heureux, M., Lin, II, Liu, H. X., Liu, Y. J., Lobato-Sanchez, R., Locarnini, R., Loeb, N. G., Loeng, H., Long, C. S., Lorrey, A. M., Lumpkin, R., Myhre, C. L., Jing-Jia Luo, Lyman, J. M., Maccallum, S., Macdonald, A. M., Maddux, B. C., Manney, G., Marchenko, S. S., Marengo, J. A., Maritorena, S., Marotzke, J., Marra, J. J., Martinez-Sanchez, O., Maslanik, J., Massom, R. A., Mathis, J. T., Mcbride, C., Mcclain, C. R., Mcgrath, D., Mcgree, S., Mclaughlin, F., Mcvicar, T. R., Mears, C., Meier, W., Meinen, C. S., Menendez, M., Merchant, C., Merrifield, M. A., Miller, L., Mitchum, G. T., Montzka, S. A., Moore, S., Mora, N. P., Morcrette, J. J., Mote, T., Muhle, J., Mullan, A. B., Muller, R., Myhre, C., Nash, E. R., Nerem, R. S., Newman, P. A., Ngari, A., Nishino, S., Njau, L. N., Noetzli, J., Oberman, N. G., Obregon, A., Ogallo, L., Oludhe, C., Oyunjargal, L., Parinussa, R. M., Park, G. H., Parker, D. E., Pasch, R. J., Pascual-Ramirez, R., Pelto, M. S., Penalba, O., Perez-Suarez, R., Perovich, D., Pezza, A. B., Pickart, R., Pinty, B., Pinzon, J., Pitts, M. C., Pour, H. K., Prior, J., Privette, J. L., Proshutinsky, A., Quegan, S., Quintana, J., Rabe, B., Rahimzadeh, F., Rajeevan, M., Rayner, D., Raynolds, M. K., Razuvaev, V. N., Reagan, J., Reid, P., Revadekar, J., Rex, M., Rivera, I. L., Robinson, D. A., Rodell, M., Roderick, M. L., Romanovsky, V. E., Ronchail, J., Rosenlof, K. H., Rudels, B., Sabine, C. L., Santee, M. L., Sawaengphokhai, P., Sayouri, A., Schauer, U., Schemm, J., Schmid, C., Schreck, C., Semiletov, I., Send, U., Sensoy, S., Shakhova, N., Sharp, M., Shiklomanov, N. I., Shimada, K., Shin, J., Siegel, D. A., Simmons, A., Skansi, M., Sokolov, V., Spence, J., Srivastava, A. K., Stackhouse, P. W., Stammerjohn, S., Steele, M., Steffen, K., Steinbrecht, W., Stephenson, T., Stolarski, R. S., Sweet, W., Takahashi, T., Taylor, M. A., Tedesco, M., Thepaut, J. N., Thompson, P., Timmermans, M. L., Tobin, S., Toole, J., Trachte, K., Trewin, B. C., Trigo, R. M., Trotman, A., Tucker, C. J., Ulupinar, Y., Wal, R. S. W., Werf, G. R., Vautard, R., Votaw, G., Wagner, W. W., Wahr, J., Walker, D. A., Wang, C. Z., Wang, J. H., Wang, L., Wang, M. H., Wang, S. H., Wanninkhof, R., Weaver, S., Weber, M., Weingartner, T., Weller, R. A., Wentz, F., Wilber, A. C., Williams, W., Willis, J. K., Wilson, R. C., Wolken, G., Wong, T. M., Woodgate, R., Yamada, R., Yamamoto-Kawai, M., Yoder, J. A., Yu, L. S., Yueh, S., Zhang, L. Y., Zhang, P. Q., Zhao, L., Zhou, X. J., Zimmermann, S., Zubair, L., Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), National Oceanic and Atmospheric Administration (NOAA), Lamont-Doherty Earth Observatory (LDEO), Columbia University [New York], Space Technology Center, European Centre for Medium-Range Weather Forecasts (ECMWF), Climate Research Division [Toronto], Environment and Climate Change Canada, Earth and Space Research Institute [Seattle] (ESR), Department of Hydrology and Geo-Environmental Sciences [Amsterdam], Vrije Universiteit Amsterdam [Amsterdam] (VU), Vienna University of Technology (TU Wien), Instituto Dom Luiz, Universidade de Lisboa = University of Lisbon (ULISBOA), NOAA Earth System Research Laboratory (ESRL), Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado [Boulder]-National Oceanic and Atmospheric Administration (NOAA), Department of Earth System Science [Irvine] (ESS), University of California [Irvine] (UC Irvine), University of California (UC)-University of California (UC), Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), University of California Center for Hydrologic Modeling [Irvine] (UCCHM), NOAA Pacific Marine Environmental Laboratory [Seattle] (PMEL), Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Extrèmes : Statistiques, Impacts et Régionalisation (ESTIMR), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Department of Physics [Boulder], University of Colorado [Boulder], Istituto Nazionale di Fisica Nucleare [Pisa] (INFN), Istituto Nazionale di Fisica Nucleare (INFN), NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML), University at Albany [SUNY], State University of New York (SUNY), Cooperative Institute for Meteorological Satellite Studies (CIMSS), University of Wisconsin-Madison-NASA-National Oceanic and Atmospheric Administration (NOAA), Peking University [Beijing], National Oceanography Centre [Southampton] (NOC), University of Southampton, NOAA National Environmental Satellite, Data, and Information Service (NESDIS), The University of Texas Medical Branch (UTMB), Institut für Umweltphysik [Bremen] (IUP), Universität Bremen, Department of Meteorology, University of Nairobi (UoN), Climate Prediction and Applications Centre (ICPAC), IGAD, Institute for Environment and Sustainability of the JRC, Partenaires INRAE, Met Office Hadley Centre for Climate Change (MOHC), United Kingdom Met Office [Exeter], Agricultural Information Institute (AII), Chinese Academy of Agricultural Sciences (CAAS), Woods Hole Oceanographic Institution (WHOI), Universitá degli Studi dell’Insubria = University of Insubria [Varese] (Uninsubria), Heilongjiang Institute of Science and Technology, Finnish Meteorological Institute (FMI), Universidad de Costa Rica (UCR), University Corporation for Atmospheric Research (UCAR), NOAA Center for Satellite Applications and Research (STAR), National Oceanic and Atmospheric Administration (NOAA)-National Oceanic and Atmospheric Administration (NOAA), ESRL Global Monitoring Laboratory [Boulder] (GML), Materials and structures Laboratory, Tokyo Institute of Technology [Tokyo] (TITECH), Rosenstiel School of Marine and Atmospheric Science (RSMAS), University of Miami [Coral Gables], Norwegian Radiation and Nuclear Safety Authority, Direction Interrégionale de Météo-France pour l'océan Indien (DIROI), Météo-France, Department of Earth Sciences [Oxford], University of Oxford, NASA Langley Research Center [Hampton] (LaRC), University of Hawai‘i [Mānoa] (UHM), Department of Earth and Space Sciences [Seattle], University of Washington [Seattle], Leibniz-Institut für Meereswissenschaften (IFM-GEOMAR), Scripps Institution of Oceanography (SIO - UC San Diego), University of California [San Diego] (UC San Diego), Agroécologie [Dijon], Institut National de la Recherche Agronomique (INRA)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Huazhong Agricultural University [Wuhan] (HZAU), NOAA National Weather Service (NWS), Department of Oceanography, Florida State University [Tallahassee] (FSU), Norwegian Institute for Air Research (NILU), Research Institute for Global Change (RIGC), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), NorthWest Research Associates (NWRA), Department of Physics [Socorro], New Mexico Institute of Mining and Technology [New Mexico Tech] (NMT), Ocean and Earth Science [Southampton], University of Southampton-National Oceanography Centre (NOC), Australian Antarctic Division (AAD), Australian Government, Department of the Environment and Energy, Antarctic Climate and Ecosystems Cooperative Research Centre (ACE-CRC), Massachusetts General Hospital [Boston], Commonwealth Scientific and Industrial Research Organisation [Canberra] (CSIRO), Australian Research Council (ARC), Remote Sensing Systems [Santa Rosa] (RSS), Développement, institutions et analyses de long terme (DIAL), Université Paris Dauphine-PSL, Université Paris sciences et lettres (PSL), NOAA National Marine Fisheries Service (NMFS), University of California (UC), NMR Laboratory, Université de Mons, Université de Mons (UMons), NASA Goddard Space Flight Center (GSFC), Glaciology, Geomorphodynamics and Geochronology, Department of Geography [Zürich], Universität Zürich [Zürich] = University of Zurich (UZH)-Universität Zürich [Zürich] = University of Zurich (UZH), Chemistry Department [Massachusetts Institute of Technology], Massachusetts Institute of Technology (MIT), Nichols College Dudley, ERDC Cold Regions Research and Engineering Laboratory (CRREL), USACE Engineer Research and Development Center (ERDC), European Commission, Space Science and Engineering Center [Madison] (SSEC), University of Wisconsin-Madison, Lausanne University Hospital, Centro de Ciencias do Sistema Terrestre, Instituto Nacional de Pesquisas Espaciais (INPE), University of Sheffield, Hochschule Mannheim - University of Applied Sciences, Laboratoire d'océanographie de Villefranche (LOV), Observatoire océanologique de Villefranche-sur-mer (OOVM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Indian Institute of Tropical Meteorology (IITM), Ministry of Earth Sciences [India], Woods Hole Research Center, Department of Earth and Environment [Boston], Boston University [Boston] (BU), Centre for Australian Weather and Climate Research (CAWCR), Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI), Génétique et Ecologie des Virus, Génétique des Virus et Pathogénèse des Maladies Virales, Université Paris Diderot - Paris 7 (UPD7)-Institut National de la Santé et de la Recherche Médicale (INSERM), Department of Botany and Plant Pathology, Oregon State University (OSU), Ctr Ecol & Hydrol, Bangor, Environm Ctr Wales, Biospherical Instruments Inc., Processus de la variabilité climatique tropicale et impacts (PARVATI), Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN), Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université Paris Diderot - Paris 7 (UPD7), Instituto Uruguayo de Meteorología, Javier Barrios Amorín 1488, CP 11200, Montevideo, Uruguay, Science Systems and Applications, Inc. [Hampton] (SSAI), National Snow and Ice Data Center (NSIDC), Naval Postgraduate School (NPS), University of California [Berkeley] (UC Berkeley), Centre de physique moléculaire optique et hertzienne (CPMOH), Université Sciences et Technologies - Bordeaux 1 (UB)-Centre National de la Recherche Scientifique (CNRS), CYRIC, Tohoku University [Sendai], The University of Tennessee [Knoxville], Oak Ridge National Laboratory [Oak Ridge] (ORNL), UT-Battelle, LLC, The University Centre in Svalbard (UNIS), Institute of Arctic Alpine Research [University of Colorado Boulder] (INSTAAR), Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Meteorologisches Observatorium Hohenpeißenberg (MOHp), Deutscher Wetterdienst [Offenbach] (DWD), British Antarctic Survey (BAS), Natural Environment Research Council (NERC), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Universidade de Lisboa (ULISBOA), University of California [Irvine] (UCI), University of California-University of California, Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Universitá degli Studi dell’Insubria, University of Costa Rica, Météo France [Sainte-Clotilde], Météo France, University of Oxford [Oxford], Scripps Institution of Oceanography (SIO), Huazhong Agricultural University, University of California, NMR and Molecular Imaging Laboratory [Mons], University of Mons [Belgium] (UMONS), Lausanne University Hospital [Switzerland], Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Diderot - Paris 7 (UPD7), Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales [Toulouse] (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)), Berkeley University of California (UC BERKELEY), Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1, and Institute of Arctic and Alpine Research (INSTAAR)

Subjects
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography
Abstract

International audience; Large-scale climate patterns influenced temperature and weather patterns around the globe in 2011. In particular, a moderate-to-strong La Nina at the beginning of the year dissipated during boreal spring but reemerged during fall. The phenomenon contributed to historical droughts in East Africa, the southern United States, and northern Mexico, as well the wettest two-year period (2010-11) on record for Australia, particularly remarkable as this follows a decade-long dry period. Precipitation patterns in South America were also influenced by La Nina. Heavy rain in Rio de Janeiro in January triggered the country's worst floods and landslides in Brazil's history. The 2011 combined average temperature across global land and ocean surfaces was the coolest since 2008, but was also among the 15 warmest years on record and above the 1981-2010 average. The global sea surface temperature cooled by 0.1 degrees C from 2010 to 2011, associated with cooling influences of La Nina. Global integrals of upper ocean heat content for 2011 were higher than for all prior years, demonstrating the Earth's dominant role of the oceans in the Earth's energy budget. In the upper atmosphere, tropical stratospheric temperatures were anomalously warm, while polar temperatures were anomalously cold. This led to large springtime stratospheric ozone reductions in polar latitudes in both hemispheres. Ozone concentrations in the Arctic stratosphere during March were the lowest for that period since satellite records began in 1979. An extensive, deep, and persistent ozone hole over the Antarctic in September indicates that the recovery to pre-1980 conditions is proceeding very slowly. Atmospheric carbon dioxide concentrations increased by 2.10 ppm in 2011, and exceeded 390 ppm for the first time since instrumental records began. Other greenhouse gases also continued to rise in concentration and the combined effect now represents a 30% increase in radiative forcing over a 1990 baseline. Most ozone depleting substances continued to fall. The global net ocean carbon dioxide uptake for the 2010 transition period from El Nino to La Nina, the most recent period for which analyzed data are available, was estimated to be 1.30 Pg C yr(-1), almost 12% below the 29-year long-term average. Relative to the long-term trend, global sea level dropped noticeably in mid-2010 and reached a local minimum in 2011. The drop has been linked to the La Nina conditions that prevailed throughout much of 2010-11. Global sea level increased sharply during the second half of 2011. Global tropical cyclone activity during 2011 was well-below average, with a total of 74 storms compared with the 1981-2010 average of 89. Similar to 2010, the North Atlantic was the only basin that experienced above-normal activity. For the first year since the widespread introduction of the Dvorak intensity-estimation method in the 1980s, only three tropical cyclones reached Category 5 intensity level-all in the Northwest Pacific basin. The Arctic continued to warm at about twice the rate compared with lower latitudes. Below-normal summer snowfall, a decreasing trend in surface albedo, and above-average surface and upper air temperatures resulted in a continued pattern of extreme surface melting, and net snow and ice loss on the Greenland ice sheet. Warmer-than-normal temperatures over the Eurasian Arctic in spring resulted in a new record-low June snow cover extent and spring snow cover duration in this region. In the Canadian Arctic, the mass loss from glaciers and ice caps was the greatest since GRACE measurements began in 2002, continuing a negative trend that began in 1987. New record high temperatures occurred at 20 m below the land surface at all permafrost observatories on the North Slope of Alaska, where measurements began in the late 1970s. Arctic sea ice extent in September 2011 was the second-lowest on record, while the extent of old ice (four and five years) reached a new record minimum that was just 19% of normal. On the opposite pole, austral winter and spring temperatures were more than 3 degrees C above normal over much of the Antarctic continent. However, winter temperatures were below normal in the northern Antarctic Peninsula, which continued the downward trend there during the last 15 years. In summer, an all-time record high temperature of -12.3 degrees C was set at the South Pole station on 25 December, exceeding the previous record by more than a full degree. Antarctic sea ice extent anomalies increased steadily through much of the year, from briefly setting a record low in April, to well above average in December. The latter trend reflects the dispersive effects of low pressure on sea ice and the generally cool conditions around the Antarctic perimeter.

Published
2012

49. Freshwater distributions and water mass structure in the Amundsen Sea Polynya region, Antarctica

Author

Randall-Goodwin, E., primary, Meredith, M. P., additional, Jenkins, A., additional, Yager, P. L., additional, Sherrell, R. M., additional, Abrahamsen, E. P., additional, Guerrero, R., additional, Yuan, X., additional, Mortlock, R. A., additional, Gavahan, K., additional, Alderkamp, A.-C., additional, Ducklow, H., additional, Robertson, R., additional, and Stammerjohn, S. E., additional

Published
2015
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