224 results on '"Steinfeldt, Reiner"'
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2. The annual update GLODAPv2.2023: the global interior ocean biogeochemical data product
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European Commission, Norwegian Research Centre, Universidade Federal do Rio de Janeiro, Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil), CSIC - Instituto Español de Oceanografía (IEO), Ministerio de Ciencia e Innovación (España), National Oceanic and Atmospheric Administration (US), Swedish Research Council for Sustainable Development, University of Maryland, National Science Foundation (US), Environmental Restoration and Conservation Agency (Japan), Helmholtz Association, Lauvset, Siv K., Lange, Nico, Tanhua, Toste, Bittig, Henry C., Olsen, Are, Kozyr, Alex, Álvarez-Rodríguez, Marta, Azetsu-Scott, Kumiko, Brown, Peter J., Carter, Brendan R., Cotrim da Cunha, Leticia, Hoppema, Mario, Humphreys, Matthew P., Ishii, Masao, Jeansson, Emil, Murata, Akihiko, Müller, Jens Daniel, Pérez, Fiz F., Schirnick, Carsten, Steinfeldt, Reiner, Suzuki, Toru, Ulfsbo, Adam, Velo, A., Woosley, Ryan J., Key, Robert M., European Commission, Norwegian Research Centre, Universidade Federal do Rio de Janeiro, Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil), CSIC - Instituto Español de Oceanografía (IEO), Ministerio de Ciencia e Innovación (España), National Oceanic and Atmospheric Administration (US), Swedish Research Council for Sustainable Development, University of Maryland, National Science Foundation (US), Environmental Restoration and Conservation Agency (Japan), Helmholtz Association, Lauvset, Siv K., Lange, Nico, Tanhua, Toste, Bittig, Henry C., Olsen, Are, Kozyr, Alex, Álvarez-Rodríguez, Marta, Azetsu-Scott, Kumiko, Brown, Peter J., Carter, Brendan R., Cotrim da Cunha, Leticia, Hoppema, Mario, Humphreys, Matthew P., Ishii, Masao, Jeansson, Emil, Murata, Akihiko, Müller, Jens Daniel, Pérez, Fiz F., Schirnick, Carsten, Steinfeldt, Reiner, Suzuki, Toru, Ulfsbo, Adam, Velo, A., Woosley, Ryan J., and Key, Robert M.
- Abstract
The Global Ocean Data Analysis Project (GLODAP) is a synthesis effort providing regular compilations of surface to bottom ocean biogeochemical bottle data, with an emphasis on seawater inorganic carbon chemistry and related variables determined through chemical analysis of seawater samples. GLODAPv2.2023 is an update of the previous version, GLODAPv2.2022 (Lauvset et al., 2022). The major changes are as follows: data from 23 new cruises were added. In addition, a number of changes were made to the data included in GLODAPv2.2022. GLODAPv2.2023 includes measurements from more than 1.4 million water samples from the global oceans collected on 1108 cruises. The data for the now 13 GLODAP core variables (salinity, oxygen, nitrate, silicate, phosphate, dissolved inorganic carbon, total alkalinity, pH, chlorofluorocarbon-11 (CFC-11), CFC-12, CFC-113, CCl4, and SF6) have undergone extensive quality control with a focus on the systematic evaluation of bias. The data are available in two formats: (i) as submitted by the data originator but converted to World Ocean Circulation Experiment (WOCE) exchange format and (ii) as a merged data product with adjustments applied to minimize bias. For the present annual update, adjustments for the 23 new cruises were derived by comparing those data with the data from the 1085 quality-controlled cruises in the GLODAPv2.2022 data product using crossover analysis. SF6 data from all cruises were evaluated by comparison with CFC-12 data measured on the same cruises. For nutrients and ocean carbon dioxide (CO2), chemistry comparisons to estimates based on empirical algorithms provided additional context for adjustment decisions. The adjustments that we applied are intended to remove potential biases from errors related to measurement, calibration, and data-handling practices without removing known or likely time trends or variations in the variables evaluated. The compiled and adjusted data product is believed to be consistent to better than 0.
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- 2024
3. The annual update GLODAPv2.2023: the global interior ocean biogeochemical data product
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Lauvset, Siv K., Lange, Nico, Tanhua, Toste, Bittig, Henry C., Olsen, Are, Kozyr, Alex, Álvarez, Marta, Azetsu-Scott, Kumiko, Brown, Peter J., Carter, Brendan R., Cotrim da Cunha, Leticia, Hoppema, Mario, Humphreys, Matthew P., Ishii, Masao, Jeansson, Emil, Murata, Akihiko, Müller, Jens Daniel, Pérez, Fiz F., Schirnick, Carsten, Steinfeldt, Reiner, Suzuki, Toru, Ulfsbo, Adam, Velo, Anton, Woosley, Ryan J., Key, Robert M., Lauvset, Siv K., Lange, Nico, Tanhua, Toste, Bittig, Henry C., Olsen, Are, Kozyr, Alex, Álvarez, Marta, Azetsu-Scott, Kumiko, Brown, Peter J., Carter, Brendan R., Cotrim da Cunha, Leticia, Hoppema, Mario, Humphreys, Matthew P., Ishii, Masao, Jeansson, Emil, Murata, Akihiko, Müller, Jens Daniel, Pérez, Fiz F., Schirnick, Carsten, Steinfeldt, Reiner, Suzuki, Toru, Ulfsbo, Adam, Velo, Anton, Woosley, Ryan J., and Key, Robert M.
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- 2024
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4. Anthropogenic carbon storage and its decadal changes in the Atlantic between 1990–2020.
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Steinfeldt, Reiner, Rhein, Monika, and Kieke, Dagmar
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ATMOSPHERIC carbon dioxide ,OCEAN convection ,WATER masses ,SEAWATER ,VENTILATION - Abstract
The Atlantic inventory of anthropogenic carbon (Cant) and its changes between 1990 and 2020 are investigated by applying the transit time distribution (TTD) method to anthropogenic tracer data. In contrast to previous TTD applications, here we take into account the admixture of old waters free of anthropogenic tracers. The greatest difference from other methods based on direct carbon observations is the higher Cant storage in the deep ocean. Estimations of the decadal Cant increase based on direct carbon observations yield in general a smaller share of Cant storage in the North Atlantic and a larger share in the South Atlantic compared to our results. Changes in oceanic circulation and/or ventilation have significant impacts on the Cant inventory on the regional scale. The enhanced upwelling of older water in the Southern Ocean and the variability in the convection depth in the Labrador Sea lead to deviations in the inferred Cant increase between 1990 and 2020 from the rate equivalent to a steady-state ocean. For the total Atlantic Cant inventory, however, decadal ventilation variability of individual water masses partially compensates for each other. In addition, its impact on the Cant storage is small due to the much higher flushing time for the whole Atlantic of the order of hundreds of years. The total Cant inventory increases from 43.0 ± 7.3 Pg C in 1990 to 68.2 ± 10.8 Pg C in 2020, almost in unison with the rising CO2 in the atmosphere. So far, ventilation changes have impacted the Cant concentrations only on the regional scale, especially in the subpolar North Atlantic and the Southern Ocean. [ABSTRACT FROM AUTHOR]
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- 2024
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5. Supplementary material to "The annual update GLODAPv2.2023: the global interior ocean biogeochemical data product"
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Lauvset, Siv K., primary, Lange, Nico, additional, Tanhua, Toste, additional, Bittig, Henry C., additional, Olsen, Are, additional, Kozyr, Alex, additional, Álvarez, Marta, additional, Azetsu-Scott, Kumiko, additional, Brown, Peter J., additional, Carter, Brendan R., additional, Cotrim da Cunha, Leticia, additional, Hoppema, Mario, additional, Humphreys, Matthew P., additional, Ishii, Masao, additional, Jeansson, Emil, additional, Murata, Akihiko, additional, Müller, Jens Daniel, additional, Perez, Fiz F., additional, Schirnick, Carsten, additional, Steinfeldt, Reiner, additional, Suzuki, Toru, additional, Ulfsbo, Adam, additional, Velo, Anton, additional, Woosley, Ryan J., additional, and Key, Robert, additional
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- 2024
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6. Reply on RC1
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Steinfeldt, Reiner, primary
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- 2024
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7. A vision for FAIR ocean data products
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Tanhua, Toste, Lauvset, Siv K., Lange, Nico, Olsen, Are, Álvarez, Marta, Diggs, Stephen, Bittig, Henry C., Brown, Peter J., Carter, Brendan R., da Cunha, Leticia Cotrim, Feely, Richard A., Hoppema, Mario, Ishii, Masao, Jeansson, Emil, Kozyr, Alex, Murata, Akihiko, Pérez, Fiz F., Pfeil, Benjamin, Schirnick, Carsten, Steinfeldt, Reiner, Telszewski, Maciej, Tilbrook, Bronte, Velo, Anton, Wanninkhof, Rik, Burger, Eugene, O’Brien, Kevin, and Key, Robert M.
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- 2021
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8. Reviews and syntheses: Abrupt ocean biogeochemical change under human-made climatic forcing – warming, acidification, and deoxygenation
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Heinze, Christoph, primary, Blenckner, Thorsten, additional, Brown, Peter, additional, Fröb, Friederike, additional, Morée, Anne, additional, New, Adrian L., additional, Nissen, Cara, additional, Rynders, Stefanie, additional, Seguro, Isabel, additional, Aksenov, Yevgeny, additional, Artioli, Yuri, additional, Bourgeois, Timothée, additional, Burger, Friedrich, additional, Buzan, Jonathan, additional, Cael, B. B., additional, Yumruktepe, Veli Çağlar, additional, Chierici, Melissa, additional, Danek, Christopher, additional, Dieckmann, Ulf, additional, Fransson, Agneta, additional, Frölicher, Thomas, additional, Galli, Giovanni, additional, Gehlen, Marion, additional, González, Aridane G., additional, Gonzalez-Davila, Melchor, additional, Gruber, Nicolas, additional, Gustafsson, Örjan, additional, Hauck, Judith, additional, Heino, Mikko, additional, Henson, Stephanie, additional, Hieronymus, Jenny, additional, Huertas, I. Emma, additional, Jebri, Fatma, additional, Jeltsch-Thömmes, Aurich, additional, Joos, Fortunat, additional, Joshi, Jaideep, additional, Kelly, Stephen, additional, Menon, Nandini, additional, Mongwe, Precious, additional, Oziel, Laurent, additional, Ólafsdottir, Sólveig, additional, Palmieri, Julien, additional, Pérez, Fiz F., additional, Ranith, Rajamohanan Pillai, additional, Ramanantsoa, Juliano, additional, Roy, Tilla, additional, Rusiecka, Dagmara, additional, Santana Casiano, J. Magdalena, additional, Santana-Falcón, Yeray, additional, Schwinger, Jörg, additional, Séférian, Roland, additional, Seifert, Miriam, additional, Shchiptsova, Anna, additional, Sinha, Bablu, additional, Somes, Christopher, additional, Steinfeldt, Reiner, additional, Tao, Dandan, additional, Tjiputra, Jerry, additional, Ulfsbo, Adam, additional, Völker, Christoph, additional, Wakamatsu, Tsuyoshi, additional, and Ye, Ying, additional
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- 2023
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9. The GEOTRACES Intermediate Data Product 2017
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Schlitzer, Reiner, Anderson, Robert F., Dodas, Elena Masferrer, Lohan, Maeve, Geibert, Walter, Tagliabue, Alessandro, Bowie, Andrew, Jeandel, Catherine, Maldonado, Maria T., Landing, William M., Cockwell, Donna, Abadie, Cyril, Abouchami, Wafa, Achterberg, Eric P., Agather, Alison, Aguliar-Islas, Ana, van Aken, Hendrik M., Andersen, Morten, Archer, Corey, Auro, Maureen, de Baar, Hein J., Baars, Oliver, Baker, Alex R., Bakker, Karel, Basak, Chandranath, Baskaran, Mark, Bates, Nicholas R., Bauch, Dorothea, van Beek, Pieter, Behrens, Melanie K., Black, Erin, Bluhm, Katrin, Bopp, Laurent, Bouman, Heather, Bowman, Katlin, Bown, Johann, Boyd, Philip, Boye, Marie, Boyle, Edward A., Branellec, Pierre, Bridgestock, Luke, Brissebrat, Guillaume, Browning, Thomas, Bruland, Kenneth W., Brumsack, Hans-Jürgen, Brzezinski, Mark, Buck, Clifton S., Buck, Kristen N., Buesseler, Ken, Bull, Abby, Butler, Edward, Cai, Pinghe, Mor, Patricia Cámara, Cardinal, Damien, Carlson, Craig, Carrasco, Gonzalo, Casacuberta, Núria, Casciotti, Karen L., Castrillejo, Maxi, Chamizo, Elena, Chance, Rosie, Charette, Matthew A., Chaves, Joaquin E., Cheng, Hai, Chever, Fanny, Christl, Marcus, Church, Thomas M., Closset, Ivia, Colman, Albert, Conway, Tim M., Cossa, Daniel, Croot, Peter, Cullen, Jay T., Cutter, Gregory A., Daniels, Chris, Dehairs, Frank, Deng, Feifei, Dieu, Huong Thi, Duggan, Brian, Dulaquais, Gabriel, Dumousseaud, Cynthia, Echegoyen-Sanz, Yolanda, Edwards, R. Lawrence, Ellwood, Michael, Fahrbach, Eberhard, Fitzsimmons, Jessica N., Russell Flegal, A., Fleisher, Martin Q., van de Flierdt, Tina, Frank, Martin, Friedrich, Jana, Fripiat, Francois, Fröllje, Henning, Galer, Stephen J.G., Gamo, Toshitaka, Ganeshram, Raja S., Garcia-Orellana, Jordi, Garcia-Solsona, Ester, Gault-Ringold, Melanie, George, Ejin, Gerringa, Loes J.A., Gilbert, Melissa, Godoy, Jose M., Goldstein, Steven L., Gonzalez, Santiago R., Grissom, Karen, Hammerschmidt, Chad, Hartman, Alison, Hassler, Christel S., Hathorne, Ed C., Hatta, Mariko, Hawco, Nicholas, Hayes, Christopher T., Heimbürger, Lars-Eric, Helgoe, Josh, Heller, Maija, Henderson, Gideon M., Henderson, Paul B., van Heuven, Steven, Ho, Peng, Horner, Tristan J., Hsieh, Yu-Te, Huang, Kuo-Fang, Humphreys, Matthew P., Isshiki, Kenji, Jacquot, Jeremy E., Janssen, David J., Jenkins, William J., John, Seth, Jones, Elizabeth M., Jones, Janice L., Kadko, David C., Kayser, Rick, Kenna, Timothy C., Khondoker, Roulin, Kim, Taejin, Kipp, Lauren, Klar, Jessica K., Klunder, Maarten, Kretschmer, Sven, Kumamoto, Yuichiro, Laan, Patrick, Labatut, Marie, Lacan, Francois, Lam, Phoebe J., Lambelet, Myriam, Lamborg, Carl H., Le Moigne, Frédéric A.C., Le Roy, Emilie, Lechtenfeld, Oliver J., Lee, Jong-Mi, Lherminier, Pascale, Little, Susan, López-Lora, Mercedes, Lu, Yanbin, Masque, Pere, Mawji, Edward, Mcclain, Charles R., Measures, Christopher, Mehic, Sanjin, Barraqueta, Jan-Lukas Menzel, van der Merwe, Pier, Middag, Rob, Mieruch, Sebastian, Milne, Angela, Minami, Tomoharu, Moffett, James W., Moncoiffe, Gwenaelle, Moore, Willard S., Morris, Paul J., Morton, Peter L., Nakaguchi, Yuzuru, Nakayama, Noriko, Niedermiller, John, Nishioka, Jun, Nishiuchi, Akira, Noble, Abigail, Obata, Hajime, Ober, Sven, Ohnemus, Daniel C., van Ooijen, Jan, O'Sullivan, Jeanette, Owens, Stephanie, Pahnke, Katharina, Paul, Maxence, Pavia, Frank, Pena, Leopoldo D., Peters, Brian, Planchon, Frederic, Planquette, Helene, Pradoux, Catherine, Puigcorbé, Viena, Quay, Paul, Queroue, Fabien, Radic, Amandine, Rauschenberg, S., Rehkämper, Mark, Rember, Robert, Remenyi, Tomas, Resing, Joseph A., Rickli, Joerg, Rigaud, Sylvain, Rijkenberg, Micha J.A., Rintoul, Stephen, Robinson, Laura F., Roca-Martí, Montserrat, Rodellas, Valenti, Roeske, Tobias, Rolison, John M., Rosenberg, Mark, Roshan, Saeed, Rutgers van der Loeff, Michiel M., Ryabenko, Evgenia, Saito, Mak A., Salt, Lesley A., Sanial, Virginie, Sarthou, Geraldine, Schallenberg, Christina, Schauer, Ursula, Scher, Howie, Schlosser, Christian, Schnetger, Bernhard, Scott, Peter, Sedwick, Peter N., Semiletov, Igor, Shelley, Rachel, Sherrell, Robert M., Shiller, Alan M., Sigman, Daniel M., Singh, Sunil Kumar, Slagter, Hans A., Slater, Emma, Smethie, William M., Snaith, Helen, Sohrin, Yoshiki, Sohst, Bettina, Sonke, Jeroen E., Speich, Sabrina, Steinfeldt, Reiner, Stewart, Gillian, Stichel, Torben, Stirling, Claudine H., Stutsman, Johnny, Swarr, Gretchen J., Swift, James H., Thomas, Alexander, Thorne, Kay, Till, Claire P., Till, Ralph, Townsend, Ashley T., Townsend, Emily, Tuerena, Robyn, Twining, Benjamin S., Vance, Derek, Velazquez, Sue, Venchiarutti, Celia, Villa-Alfageme, Maria, Vivancos, Sebastian M., Voelker, Antje H.L., Wake, Bronwyn, Warner, Mark J., Watson, Ros, van Weerlee, Evaline, Alexandra Weigand, M., Weinstein, Yishai, Weiss, Dominik, Wisotzki, Andreas, Woodward, E. Malcolm S., Wu, Jingfeng, Wu, Yingzhe, Wuttig, Kathrin, Wyatt, Neil, Xiang, Yang, Xie, Ruifang C., Xue, Zichen, Yoshikawa, Hisayuki, Zhang, Jing, Zhang, Pu, Zhao, Ye, Zheng, Linjie, Zheng, Xin-Yuan, Zieringer, Moritz, Zimmer, Louise A., Ziveri, Patrizia, Zunino, Patricia, and Zurbrick, Cheryl
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- 2018
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10. Ventilation variability of Labrador Sea Water and its impact on oxygen and anthropogenic carbon: a review
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Rhein, Monika, Steinfeldt, Reiner, Kieke, Dagmar, Stendardo, Ilaria, and Yashayaev, Igor
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- 2017
11. Decadal changes of anthropogenic carbon in the Atlantic 1990–2010
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Steinfeldt, Reiner, primary, Rhein, Monika, additional, and Kieke, Dagmar, additional
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- 2023
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12. Global Ocean Data Analysis Project version 2.2023 (GLODAPv2.2023)
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National Oceanic and Atmospheric Administration (US), National Science Foundation (US), European Commission, Environmental Restoration and Conservation Agency (Japan), Lauvset, Siv K. [0000-0001-8498-4067], Tanhua, Toste [0000-0002-0313-2557], Olsen, Are [0000-0003-1696-9142], Kozyr, Alex [0000-0003-4836-8974], Álvarez-Rodríguez, Marta [0000-0002-5075-9344], Azetsu-Scott, Kumiko [0000-0002-1466-6386], Carter, Brendan R. [0000-0003-2445-0711], Feely, Richard A. [0000-0003-3245-3568], Ishii, Masao [0000-0002-7328-4599], Lo Monaco, Claire [0000-0002-5653-5018], Murata, Akihiko [0000-0002-5931-2784], Müller, Jens Daniel [0000-0003-3137-0883], Pérez, Fiz F. [0000-0003-4836-8974], Tilbrook, Bronte [0000-0001-9385-3827], Velo, A. [0000-0002-7598-5700], Lange, Nico [nlan@norceresearch.no], Lauvset, Siv K., Lange, Nico, Tanhua, Toste, Bittig, Henry C., Olsen, Are, Kozyr, Alex, Álvarez-Rodríguez, Marta, Azetsu-Scott, Kumiko, Becker, Susan, Brown, Peter J., Carter, Brendan R., Cotrim da Cunha, Leticia, Feely, Richard A., Hoppema, Mario, Humphreys, Matthew P., Ishii, Masao, Jeansson, Emil, Jones, Steve D., Lo Monaco, Claire, Murata, Akihiko, Müller, Jens Daniel, Pérez, Fiz F., Schirnick, Carsten, Steinfeldt, Reiner, Suzuki, Toru, Tilbrook, Bronte, Ulfsbo, Adam, Velo, A., Woosley, Ryan J., Key, Robert M., National Oceanic and Atmospheric Administration (US), National Science Foundation (US), European Commission, Environmental Restoration and Conservation Agency (Japan), Lauvset, Siv K. [0000-0001-8498-4067], Tanhua, Toste [0000-0002-0313-2557], Olsen, Are [0000-0003-1696-9142], Kozyr, Alex [0000-0003-4836-8974], Álvarez-Rodríguez, Marta [0000-0002-5075-9344], Azetsu-Scott, Kumiko [0000-0002-1466-6386], Carter, Brendan R. [0000-0003-2445-0711], Feely, Richard A. [0000-0003-3245-3568], Ishii, Masao [0000-0002-7328-4599], Lo Monaco, Claire [0000-0002-5653-5018], Murata, Akihiko [0000-0002-5931-2784], Müller, Jens Daniel [0000-0003-3137-0883], Pérez, Fiz F. [0000-0003-4836-8974], Tilbrook, Bronte [0000-0001-9385-3827], Velo, A. [0000-0002-7598-5700], Lange, Nico [nlan@norceresearch.no], Lauvset, Siv K., Lange, Nico, Tanhua, Toste, Bittig, Henry C., Olsen, Are, Kozyr, Alex, Álvarez-Rodríguez, Marta, Azetsu-Scott, Kumiko, Becker, Susan, Brown, Peter J., Carter, Brendan R., Cotrim da Cunha, Leticia, Feely, Richard A., Hoppema, Mario, Humphreys, Matthew P., Ishii, Masao, Jeansson, Emil, Jones, Steve D., Lo Monaco, Claire, Murata, Akihiko, Müller, Jens Daniel, Pérez, Fiz F., Schirnick, Carsten, Steinfeldt, Reiner, Suzuki, Toru, Tilbrook, Bronte, Ulfsbo, Adam, Velo, A., Woosley, Ryan J., and Key, Robert M.
- Abstract
This dataset consists of the GLODAPv2.2023 data product composed of data from 1108 scientific cruises covering the global ocean between 1972 and 2021. It includes full depth discrete bottle measurements of salinity, oxygen, nitrate, silicate, phosphate, dissolved inorganic carbon (TCO2), total alkalinity (TAlk), CO2 fugacity (fCO2), pH, chlorofluorocarbons (CFC-11, CFC-12, CFC-113, and CCl4), SF6, and various isotopes and organic compounds. It was created by appending data from 23 cruises to GLODAPv2.2022 (Lauvset et al., 2022, NCEI Accession 0257247). The data for salinity, oxygen, nitrate, silicate, phosphate, TCO2, TAlk, pH, CFC-11, CFC-12, CFC-113, CCl4, and SF6 were subjected to primary and secondary quality control. Severe biases in these data have been corrected for, and outliers removed. However, differences in data related to any known or likely time trends or variations have not been corrected for. These data are believed to be accurate to 0.005 in salinity, 1% in oxygen, 2% in nitrate, 2% in silicate, 2% in phosphate, 4 µmol kg-1 in TCO2, 4 µmol kg-1 in TAlk, and for the halogenated transient tracers and SF6: 5%
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- 2023
13. Estimating the efficiency of open ocean alkalinization
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Steinfeldt, Reiner, primary and Rhein, Monika, additional
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- 2023
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14. Interannual to decadal oxygen variability in the mid-depth water masses of the eastern North Atlantic
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Stendardo, Ilaria, Kieke, Dagmar, Rhein, Monika, Gruber, Nicolas, and Steinfeldt, Reiner
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- 2015
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15. Decadal acidification in the water masses of the Atlantic Ocean
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Ríos, Aida F., Resplandy, Laure, García-Ibáñez, Maribel I., Fajar, Noelia M., Velo, Anton, Padin, Xose A., Wanninkhof, Rik, Steinfeldt, Reiner, Rosón, Gabriel, and Pérez, Fiz F.
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- 2015
16. GLODAPv2.2022: the latest version of the global interior ocean biogeochemical data product
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Lauvset, Siv K., primary, Lange, Nico, additional, Tanhua, Toste, additional, Bittig, Henry C., additional, Olsen, Are, additional, Kozyr, Alex, additional, Alin, Simone, additional, Álvarez, Marta, additional, Azetsu-Scott, Kumiko, additional, Barbero, Leticia, additional, Becker, Susan, additional, Brown, Peter J., additional, Carter, Brendan R., additional, da Cunha, Leticia Cotrim, additional, Feely, Richard A., additional, Hoppema, Mario, additional, Humphreys, Matthew P., additional, Ishii, Masao, additional, Jeansson, Emil, additional, Jiang, Li-Qing, additional, Jones, Steve D., additional, Lo Monaco, Claire, additional, Murata, Akihiko, additional, Müller, Jens Daniel, additional, Pérez, Fiz F., additional, Pfeil, Benjamin, additional, Schirnick, Carsten, additional, Steinfeldt, Reiner, additional, Suzuki, Toru, additional, Tilbrook, Bronte, additional, Ulfsbo, Adam, additional, Velo, Anton, additional, Woosley, Ryan J., additional, and Key, Robert M., additional
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- 2022
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17. Decadal changes of anthropogenic carbon in the Atlantic 1990–2010.
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Steinfeldt, Reiner, Rhein, Monika, and Kieke, Dagmar
- Subjects
OCEAN convection ,WATER masses ,LINEAR orderings ,SEAWATER ,CARBON ,MINE ventilation - Abstract
The Atlantic inventory of anthropogenic carbon (C
ant ) and its changes between 1990 and 2010 are investigated by applying the transit time distribution (TTD) method to anthropogenic tracer data. In contrast to previous TTD applications, here we take into account the admixture of old waters free of anthropogenic tracers. The greatest difference to other methods based on direct carbon observations is the higher Cant storage in the deep ocean. The results from the TTD method better reflects the observed distribution of other transient tracers such as chlorofluorocarbons (CFCs). Changes in oceanic circulation/ventilation are important on the regional scale. The enhanced upwelling of older water in the Southern Ocean and the decline in the convection depth in the Labrador Sea lead to deviations of the inferred Cant increase between 1990 and 2010 from the rate equivalent to a steady state ocean. For the total Atlantic Cant inventory, however, decadal ventilation variability of individual water masses is partially compensating each other, and the effect is small due to the much higher flushing time for the total Atlantic of the order of hundreds of years. The total Cant inventory increases from 39.7 ± 7.7 Pg C in 1990 to 54.6 ± 9.5 Pg C in 2010, almost in unison with the rising CO2 in the atmosphere. Only a reduction of the Atlantic ventilation over several decades would severely change this relationship. [ABSTRACT FROM AUTHOR]- Published
- 2023
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18. Supplementary material to "GLODAPv2.2022: the latest version of the global interior ocean biogeochemical data product"
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Lauvset, Siv K., primary, Lange, Nico, additional, Tanhua, Toste, additional, Bittig, Henry C., additional, Olsen, Are, additional, Kozyr, Alex, additional, Alin, Simone R., additional, Álvarez, Marta, additional, Azetsu-Scott, Kumiko, additional, Barbero, Leticia, additional, Becker, Susan, additional, Brown, Peter J., additional, Carter, Brendan R., additional, da Cunha, Leticia Cotrim, additional, Feely, Richard A., additional, Hoppema, Mario, additional, Humphreys, Matthew P., additional, Ishii, Masao, additional, Jeansson, Emil, additional, Jiang, Li-Qing, additional, Jones, Steve D., additional, Lo Monaco, Claire, additional, Murata, Akihiko, additional, Müller, Jens Daniel, additional, Pérez, Fiz F., additional, Pfeil, Benjamin, additional, Schirnick, Carsten, additional, Steinfeldt, Reiner, additional, Suzuki, Toru, additional, Tilbrook, Bronte, additional, Ulfsbo, Adam, additional, Velo, Anton, additional, Woosley, Ryan J., additional, and Key, Robert M., additional
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- 2022
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19. Transit Time Distributions and Ventilation Pathways Using CFCs and Lagrangian Backtracking in the South Atlantic of an Eddying Ocean Model
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Chouksey, Manita, primary, Griesel, Alexa, additional, Eden, Carsten, additional, and Steinfeldt, Reiner, additional
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- 2022
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20. GLODAPv2.2022: the latest version of the global interior ocean biogeochemical data product
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Lauvset, Siv K., Lange, Nico, Tanhua, Toste, Bittig, Henry C., Olsen, Are, Kozyr, Alex, Alin, Simone R., Álvarez, Marta, Azetsu-Scott, Kumiko, Barbero, Leticia, Becker, Susan, Brown, Peter J., Carter, Brendan R., da Cunha, Leticia Cotrim, Feely, Richard A., Hoppema, Mario, Humphreys, Matthew P., Ishii, Masao, Jeansson, Emil, Jiang, Li-Qing, Jones, Steve D., Lo Monaco, Claire, Murata, Akihiko, Müller, Jens Daniel, Pérez, Fiz F., Pfeil, Benjamin, Schirnick, Carsten, Steinfeldt, Reiner, Suzuki, Toru, Tilbrook, Bronte, Ulfsbo, Adam, Velo, Anton, Woosley, Ryan J., Key, Robert M., Lauvset, Siv K., Lange, Nico, Tanhua, Toste, Bittig, Henry C., Olsen, Are, Kozyr, Alex, Alin, Simone R., Álvarez, Marta, Azetsu-Scott, Kumiko, Barbero, Leticia, Becker, Susan, Brown, Peter J., Carter, Brendan R., da Cunha, Leticia Cotrim, Feely, Richard A., Hoppema, Mario, Humphreys, Matthew P., Ishii, Masao, Jeansson, Emil, Jiang, Li-Qing, Jones, Steve D., Lo Monaco, Claire, Murata, Akihiko, Müller, Jens Daniel, Pérez, Fiz F., Pfeil, Benjamin, Schirnick, Carsten, Steinfeldt, Reiner, Suzuki, Toru, Tilbrook, Bronte, Ulfsbo, Adam, Velo, Anton, Woosley, Ryan J., and Key, Robert M.
- Abstract
The Global Ocean Data Analysis Project (GLODAP) is a synthesis effort providing regular compilations of surface-to-bottom ocean biogeochemical bottle data, with an emphasis on seawater inorganic carbon chemistry and related variables determined through chemical analysis of seawater samples. GLODAPv2.2022 is an update of the previous version, GLODAPv2.2021 (Lauvset et al., 2021). The major changes are as follows: data from 96 new cruises were added, data coverage was extended until 2021, and for the first time we performed secondary quality control on all sulphur hexafluoride (SF6) data. In addition, a number of changes were made to data included in GLODAPv2.2021. These changes affect specifically the SF6 data, which are now subjected to secondary quality control, and carbon data measured onboard the RV Knorr in the Indian Ocean in 1994–1995 which are now adjusted using CRM measurements made at the time. GLODAPv2.2022 includes measurements from almost 1.4 million water samples from the global oceans collected on 1085 cruises. The data for the now 13 GLODAP core variables (salinity, oxygen, nitrate, silicate, phosphate, dissolved inorganic carbon, total alkalinity, pH, CFC-11, CFC-12, CFC-113, CCl4, and SF6) have undergone extensive quality control with a focus on systematic evaluation of bias. The data are available in two formats: (i) as submitted by the data originator but converted to World Ocean Circulation Experiment (WOCE) exchange format and (ii) as a merged data product with adjustments applied to minimize bias. For the present annual update, adjustments for the 96 new cruises were derived by comparing those data with the data from the 989 quality controlled cruises in the GLODAPv2.2021 data product using crossover analysis. SF6 data from all cruises were evaluated by comparison with CFC-12 data measured on the same cruises. For nutrients and ocean carbon dioxide (CO2) chemistry comparisons to estimates based on empirical algorithms provided additional contex
- Published
- 2022
- Full Text
- View/download PDF
21. GLODAPv2.2022: the latest version of the global interior oceanbiogeochemical data product
- Author
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Lauvset, Siv K., Lange, Nico, Tanhua, Toste, Bittig, Henry C., Olsen, Are, Kozyr, Alex, Alin, Simone, Alvarez, Marta, Azetsu-scott, Kumiko, Barbero, Leticia, Becker, Susan, Brown, Peter J., Carter, Brendan R., Da Cunha, Leticia Cotrim, Feely, Richard A., Hoppema, Mario, Humphreys, Matthew P., Ishii, Masao, Jeansson, Emil, Jiang, Li-qing, Jones, Steve D., Lo Monaco, Claire, Murata, Akihiko, Muller, Jens Daniel, Perez, Fiz F., Pfeil, Benjamin, Schirnick, Carsten, Steinfeldt, Reiner, Suzuki, Toru, Tilbrook, Bronte, Ulfsbo, Adam, Velo, Anton, Woosley, Ryan J., Key, Robert M., Lauvset, Siv K., Lange, Nico, Tanhua, Toste, Bittig, Henry C., Olsen, Are, Kozyr, Alex, Alin, Simone, Alvarez, Marta, Azetsu-scott, Kumiko, Barbero, Leticia, Becker, Susan, Brown, Peter J., Carter, Brendan R., Da Cunha, Leticia Cotrim, Feely, Richard A., Hoppema, Mario, Humphreys, Matthew P., Ishii, Masao, Jeansson, Emil, Jiang, Li-qing, Jones, Steve D., Lo Monaco, Claire, Murata, Akihiko, Muller, Jens Daniel, Perez, Fiz F., Pfeil, Benjamin, Schirnick, Carsten, Steinfeldt, Reiner, Suzuki, Toru, Tilbrook, Bronte, Ulfsbo, Adam, Velo, Anton, Woosley, Ryan J., and Key, Robert M.
- Abstract
The Global Ocean Data Analysis Project (GLODAP) is a synthesis effort providing regular compilations of surface-to-bottom ocean biogeochemical bottle data, with an emphasis on seawater inorganic carbon chemistry and related variables determined through chemical analysis of seawater samples. GLODAPv2.2022 is an update of the previous version, GLODAPv2.2021 (Lauvset et al., 2021). The major changes are as follows: data from 96 new cruises were added, data coverage was extended until 2021, and for the first time we performed secondary quality control on all sulfur hexafluoride (SF6) data. In addition, a number of changes were made to data included in GLODAPv2.2021. These changes affect specifically the SF6 data, which are now subjected to secondary quality control, and carbon data measured on board the RV Knorr in the Indian Ocean in 1994-1995 which are now adjusted using certified reference material (CRM) measurements made at the time. GLODAPv2.2022 includes measurements from almost 1.4 million water samples from the global oceans collected on 1085 cruises. The data for the now 13 GLODAP core variables (salinity, oxygen, nitrate, silicate, phosphate, dissolved inorganic carbon, total alkalinity, pH, chlorofluorocarbon-11 (CFC-11), CFC-12, CFC-113, CCl4, and SF6) have undergone extensive quality control with a focus on systematic evaluation of bias. The data are available in two formats: (i) as submitted by the data originator but converted to World Ocean Circulation Experiment (WOCE) exchange format and (ii) as a merged data product with adjustments applied to minimize bias. For the present annual update, adjustments for the 96 new cruises were derived by comparing those data with the data from the 989 quality-controlled cruises in the GLODAPv2.2021 data product using crossover analysis. SF6 data from all cruises were evaluated by comparison with CFC-12 data measured on the same cruises. For nutrients and ocean carbon dioxide (CO2) chemistry comparisons to estimates b
- Published
- 2022
- Full Text
- View/download PDF
22. GLODAPv2.2022: the latest version of the global interior ocean biogeochemical data product
- Author
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European Commission, Ministerio de Ciencia e Innovación (España), National Oceanic and Atmospheric Administration (US), National Science Foundation (US), Lauvset, Siv K., Lange, Nico, Tanhua, Toste, Bittig, Henry C., Olsen, Are, Kozyr, Alex, Alin, Simone, Álvarez-Rodríguez, Marta, Azetsu-Scott, Kumiko, Barbero, Leticia, Becker, Susan, Brown, Peter J., Carter, Brendan R., Cotrim da Cunha, Leticia, Feely, Richard A., Hoppema, Mario, Humphreys, Matthew P., Ishii, Masao, Jeansson, Emil, Jiang, Li Qing, Jones, Steve D., Lo Monaco, Claire, Murata, Akihiko, Müller, Jens Daniel, Pérez, Fiz F., Pfeil, Benjamin, Schirnick, Carsten, Steinfeldt, Reiner, Suzuki, Toru, Tilbrook, Bronte, Ulfsbo, Adam, Velo, A., Woosley, Ryan J., Key, Robert M., European Commission, Ministerio de Ciencia e Innovación (España), National Oceanic and Atmospheric Administration (US), National Science Foundation (US), Lauvset, Siv K., Lange, Nico, Tanhua, Toste, Bittig, Henry C., Olsen, Are, Kozyr, Alex, Alin, Simone, Álvarez-Rodríguez, Marta, Azetsu-Scott, Kumiko, Barbero, Leticia, Becker, Susan, Brown, Peter J., Carter, Brendan R., Cotrim da Cunha, Leticia, Feely, Richard A., Hoppema, Mario, Humphreys, Matthew P., Ishii, Masao, Jeansson, Emil, Jiang, Li Qing, Jones, Steve D., Lo Monaco, Claire, Murata, Akihiko, Müller, Jens Daniel, Pérez, Fiz F., Pfeil, Benjamin, Schirnick, Carsten, Steinfeldt, Reiner, Suzuki, Toru, Tilbrook, Bronte, Ulfsbo, Adam, Velo, A., Woosley, Ryan J., and Key, Robert M.
- Abstract
The Global Ocean Data Analysis Project (GLODAP) is a synthesis effort providing regular compilations of surface-to-bottom ocean biogeochemical bottle data, with an emphasis on seawater inorganic carbon chemistry and related variables determined through chemical analysis of seawater samples. GLODAPv2.2022 is an update of the previous version, GLODAPv2.2021 (Lauvset et al., 2021). The major changes are as follows: data from 96 new cruises were added, data coverage was extended until 2021, and for the first time we performed secondary quality control on all sulfur hexafluoride (SF6) data. In addition, a number of changes were made to data included in GLODAPv2.2021. These changes affect specifically the SF6 data, which are now subjected to secondary quality control, and carbon data measured on board the RV Knorr in the Indian Ocean in 1994-1995 which are now adjusted using certified reference material (CRM) measurements made at the time. GLODAPv2.2022 includes measurements from almost 1.4 million water samples from the global oceans collected on 1085 cruises. The data for the now 13 GLODAP core variables (salinity, oxygen, nitrate, silicate, phosphate, dissolved inorganic carbon, total alkalinity, pH, chlorofluorocarbon-11 (CFC-11), CFC-12, CFC-113, CCl4, and SF6) have undergone extensive quality control with a focus on systematic evaluation of bias. The data are available in two formats: (i) as submitted by the data originator but converted to World Ocean Circulation Experiment (WOCE) exchange format and (ii) as a merged data product with adjustments applied to minimize bias. For the present annual update, adjustments for the 96 new cruises were derived by comparing those data with the data from the 989 quality-controlled cruises in the GLODAPv2.2021 data product using crossover analysis. SF6 data from all cruises were evaluated by comparison with CFC-12 data measured on the same cruises. For nutrients and ocean carbon dioxide (CO2) chemistry comparisons to estimates b
- Published
- 2022
23. The unaccounted oceanic sink of anthropogenic N2O
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Paz, M. de la, Velo, A., Steinfeldt, Reiner, Pérez, Fiz F., Paz, M. de la, Velo, A., Steinfeldt, Reiner, and Pérez, Fiz F.
- Abstract
Although greenhouse gases occur naturally in the atmosphere, their concentration has increased since 1850 due to anthropogenic activities. The contribution of the marine domains to carbon dioxide (CO2) uptake from the atmosphere has been computed and periodically re-evaluated given the implications for climate change. However, the fate of atmospheric nitrous oxide (N2O) had not been considered until recently. We evaluated the amount of N2O of anthropogenic origin (N2Oant) taken up by the global ocean. The oceanic inventory of N2Oant has been calculated through a novel method, that considers the direct proportionality existing between the excess of both N2O and CO2 in the atmosphere since 1850. Applying this relationship to different versions of Cant climatology, we obtained the oceanic global distribution and inventories of N2Oant. The oceanic uptake of N2Oant from pre-industrial times is 10.2±1.0 Tg-N, which is comparable to others terms of global N2O inventories, such as oceanic N deposition
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- 2022
24. An updated version of the global interior ocean biogeochemical data product, GLODAPv2.2021
- Author
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Lauvset, Siv K., primary, Lange, Nico, additional, Tanhua, Toste, additional, Bittig, Henry C., additional, Olsen, Are, additional, Kozyr, Alex, additional, Álvarez, Marta, additional, Becker, Susan, additional, Brown, Peter J., additional, Carter, Brendan R., additional, Cotrim da Cunha, Leticia, additional, Feely, Richard A., additional, van Heuven, Steven, additional, Hoppema, Mario, additional, Ishii, Masao, additional, Jeansson, Emil, additional, Jutterström, Sara, additional, Jones, Steve D., additional, Karlsen, Maren K., additional, Lo Monaco, Claire, additional, Michaelis, Patrick, additional, Murata, Akihiko, additional, Pérez, Fiz F., additional, Pfeil, Benjamin, additional, Schirnick, Carsten, additional, Steinfeldt, Reiner, additional, Suzuki, Toru, additional, Tilbrook, Bronte, additional, Velo, Anton, additional, Wanninkhof, Rik, additional, Woosley, Ryan J., additional, and Key, Robert M., additional
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- 2021
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25. Supplementary material to "An updated version of the global interior ocean biogeochemical data product, GLODAPv2.2021"
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Lauvset, Siv K., primary, Lange, Nico, additional, Tanhua, Toste, additional, Bittig, Henry C., additional, Olsen, Are, additional, Kozyr, Alex, additional, Álvarez, Marta, additional, Becker, Susan, additional, Brown, Peter J., additional, Carter, Brendan R., additional, Cotrim da Cunha, Leticia, additional, Feely, Richard A., additional, van Heuven, Steven, additional, Hoppema, Mario, additional, Ishii, Masao, additional, Jeansson, Emil, additional, Jutterström, Sara, additional, Jones, Steve D., additional, Karlsen, Maren K., additional, Lo Monaco, Claire, additional, Michaelis, Patrick, additional, Murata, Akihiko, additional, Pérez, Fiz F., additional, Pfeil, Benjamin, additional, Schirnick, Carsten, additional, Steinfeldt, Reiner, additional, Suzuki, Toru, additional, Tilbrook, Bronte, additional, Velo, Anton, additional, Wanninkhof, Rik, additional, Woosley, Ryan J., additional, and Key, Robert M., additional
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- 2021
- Full Text
- View/download PDF
26. AMOC Components at 47��N, Cruise No. M164 (GPF-19-1-105), June 23 - July 31, 2020, Emden (Germany) - Emden (Germany)
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Kieke, Dagmar, Bulsiewicz, Klaus, Gapp, Cyril, Hinse, Yannik, Huhn, Oliver, Holanda, Bruna, Hunkem��ller, Annette, Kinne, Stefan, K��llner, Manuela, Krisztian, Lina, Kr��ger, Ovid O, Leimann, Ilmar, P��hlker, Mira, Schneehorst, Anja, Smirnov, Alexander, Steinfeldt, Reiner, Stelzner, Martin, Stiehler, Jan, Svensson, Tobias, Wett, Simon, and Wiegand, Kevin
- Subjects
Earth sciences and geology ,Earth Science - Abstract
METEOR-Berichte
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- 2021
- Full Text
- View/download PDF
27. An updated version of the global interior ocean biogeochemical data product, GLODAPv2.2021
- Author
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Lauvset, Siv K., Lange, Nico, Tanhua, Toste, Bittig, Henry C., Olsen, Are, Kozyr, Alex, Álvarez, Marta, Becker, Susan, Brown, Peter J., Carter, Brendan R., Cotrim da Cunha, Leticia, Feely, Richard A., van Heuven, Steven, Hoppema, Mario, Ishii, Masao, Jeansson, Emil, Jutterström, Sara, Jones, Steve D., Karlsen, Maren K., Lo Monaco, Claire, Michaelis, Patrick, Murata, Akihiko, Pérez, Fiz F., Pfeil, Benjamin, Schirnick, Carsten, Steinfeldt, Reiner, Suzuki, Toru, Tilbrook, Bronte, Velo, Anton, Wanninkhof, Rik, Woosley, Ryan J., Key, Robert M., Lauvset, Siv K., Lange, Nico, Tanhua, Toste, Bittig, Henry C., Olsen, Are, Kozyr, Alex, Álvarez, Marta, Becker, Susan, Brown, Peter J., Carter, Brendan R., Cotrim da Cunha, Leticia, Feely, Richard A., van Heuven, Steven, Hoppema, Mario, Ishii, Masao, Jeansson, Emil, Jutterström, Sara, Jones, Steve D., Karlsen, Maren K., Lo Monaco, Claire, Michaelis, Patrick, Murata, Akihiko, Pérez, Fiz F., Pfeil, Benjamin, Schirnick, Carsten, Steinfeldt, Reiner, Suzuki, Toru, Tilbrook, Bronte, Velo, Anton, Wanninkhof, Rik, Woosley, Ryan J., and Key, Robert M.
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- 2021
28. A vision for FAIR ocean data products
- Author
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Tanhua, T. [0000-0002-0313-2557], Álvarez, Marta [0000-0002-5075-9344], Bittig, Henry C. [0000-0002-8621-3095], Brown, P. [0000-0002-1152-1114], Cotrim da Cunha, Leticia [0000-0001-8035-1430], Hoppema, M. [0000-0002-2326-619X], Ishii, Masao [0000-0002-7328-4599], Jeansson, Emil [0000-0002-2501-3479], Pérez, Fiz F. [0000-0003-4836-8974], Schirnick, C. [0000-0003-4111-9174], Steinfeldt, R. [0000-0002-3704-3990], Tilbrook, Bronte [0000-0001-9385-3827], Velo, A. [0000-0002-7598-5700], Tanhua, Toste, Lauvset, Siv K., Lange, Nico, Olsen, Are, Álvarez-Rodríguez, Marta, Diggs, Stephen, Bittig, Henry C., Brown, Peter J., Carter, Brendan R., Cotrim da Cunha, Leticia, Feely, Richard A., Hoppema, Mario, Ishii, Masao, Jeansson, Emil, Kozyr, Alex, Murata, Akihiko, Pérez, Fiz F., Pfeil, Benjamin, Schirnick, Carsten, Steinfeldt, Reiner, Telszewski, Maciej, Tilbrook, Bronte, Velo, A., Wanninkhof, Rik, Burger, Eugene, O'Brien, Kevin, Key, Robert M., Tanhua, T. [0000-0002-0313-2557], Álvarez, Marta [0000-0002-5075-9344], Bittig, Henry C. [0000-0002-8621-3095], Brown, P. [0000-0002-1152-1114], Cotrim da Cunha, Leticia [0000-0001-8035-1430], Hoppema, M. [0000-0002-2326-619X], Ishii, Masao [0000-0002-7328-4599], Jeansson, Emil [0000-0002-2501-3479], Pérez, Fiz F. [0000-0003-4836-8974], Schirnick, C. [0000-0003-4111-9174], Steinfeldt, R. [0000-0002-3704-3990], Tilbrook, Bronte [0000-0001-9385-3827], Velo, A. [0000-0002-7598-5700], Tanhua, Toste, Lauvset, Siv K., Lange, Nico, Olsen, Are, Álvarez-Rodríguez, Marta, Diggs, Stephen, Bittig, Henry C., Brown, Peter J., Carter, Brendan R., Cotrim da Cunha, Leticia, Feely, Richard A., Hoppema, Mario, Ishii, Masao, Jeansson, Emil, Kozyr, Alex, Murata, Akihiko, Pérez, Fiz F., Pfeil, Benjamin, Schirnick, Carsten, Steinfeldt, Reiner, Telszewski, Maciej, Tilbrook, Bronte, Velo, A., Wanninkhof, Rik, Burger, Eugene, O'Brien, Kevin, and Key, Robert M.
- Abstract
The ocean is mitigating global warming by absorbing large amounts of excess carbon dioxide from human activities. To quantify and monitor the ocean carbon sink, we need a state-of-the-art data resource that makes data submission and retrieval machine-compatible and efficient
- Published
- 2021
29. An updated version of the global interior ocean biogeochemical data product, GLODAPv2.2021
- Author
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European Commission, Ministerio de Ciencia y Tecnología (España), Lauvset, Siv K., Lange, Nico, Tanhua, Toste, Bittig, Henry C., Olsen, Are, Kozyr, Alex, Álvarez-Rodríguez, Marta, Becker, Susan, Brown, Peter J., Carter, Brendan R., Cotrim da Cunha, Leticia, Feely, Richard A., van Heuven, Steven, Hoppema, Mario, Ishii, Masao, Jeansson, Emil, Jutterström, S., Jones, Steve D., Karlsen, Maren K., Lo Monaco, Claire, Michaelis, Patrick, Murata, Akihiko, Pérez, Fiz F., Pfeil, Benjamin, Schirnick, Carsten, Steinfeldt, Reiner, Tilbrook, Bronte, Velo, A., Wanninkhof, Rik, Woosley, Ryan J., Key, Robert M., European Commission, Ministerio de Ciencia y Tecnología (España), Lauvset, Siv K., Lange, Nico, Tanhua, Toste, Bittig, Henry C., Olsen, Are, Kozyr, Alex, Álvarez-Rodríguez, Marta, Becker, Susan, Brown, Peter J., Carter, Brendan R., Cotrim da Cunha, Leticia, Feely, Richard A., van Heuven, Steven, Hoppema, Mario, Ishii, Masao, Jeansson, Emil, Jutterström, S., Jones, Steve D., Karlsen, Maren K., Lo Monaco, Claire, Michaelis, Patrick, Murata, Akihiko, Pérez, Fiz F., Pfeil, Benjamin, Schirnick, Carsten, Steinfeldt, Reiner, Tilbrook, Bronte, Velo, A., Wanninkhof, Rik, Woosley, Ryan J., and Key, Robert M.
- Abstract
The Global Ocean Data Analysis Project (GLODAP) is a synthesis effort providing regular compilations of surface-to-bottom ocean biogeochemical bottle data, with an emphasis on seawater inorganic carbon chemistry and related variables determined through chemical analysis of seawater samples. GLODAPv2.2021 is an update of the previous version, GLODAPv2.2020 (Olsen et al., 2020). The major changes are as follows: data from 43 new cruises were added, data coverage was extended until 2020, all data with missing temperatures were removed, and a digital object identifier (DOI) was included for each cruise in the product files. In addition, a number of minor corrections to GLODAPv2.2020 data were performed. GLODAPv2.2021 includes measurements from more than 1.3 million water samples from the global oceans collected on 989 cruises. The data for the 12 GLODAP core variables (salinity, oxygen, nitrate, silicate, phosphate, dissolved inorganic carbon, total alkalinity, pH, CFC-11, CFC-12, CFC-113, and CCl4) have undergone extensive quality control with a focus on systematic evaluation of bias. The data are available in two formats: (i) as submitted by the data originator but updated to World Ocean Circulation Experiment (WOCE) exchange format and (ii) as a merged data product with adjustments applied to minimize bias. For this annual update, adjustments for the 43 new cruises were derived by comparing those data with the data from the 946 quality controlled cruises in the GLODAPv2.2020 data product using crossover analysis. Comparisons to estimates of nutrients and ocean CO2 chemistry based on empirical algorithms provided additional context for adjustment decisions in this version. The adjustments are intended to remove potential biases from errors related to measurement, calibration, and data handling practices without removing known or likely time trends or variations in the variables evaluated. The compiled and adjusted data product is believed to be consistent with to bett, The original data, their documentation, and DOI codes are available at the Ocean Carbon Data System of NOAA NCEI (https://www.ncei.noaa.gov/access/ocean-carbon-data-system/oceans/GLODAPv2_2021/, last access: 7 July 2021). This site also provides access to the merged data product, which is provided as a single global file and as four regional ones – the Arctic, Atlantic, Indian, and Pacific oceans – under https://doi.org/10.25921/ttgq-n825 (Lauvset et al., 2021). These bias-adjusted product files also include significant ancillary and approximated data and can be accessed via https://www.glodap.info (last access: 29 June 2021). These were obtained by interpolation of, or calculation from, measured data. This living data update documents the GLODAPv2.2021 methods and provides a broad overview of the secondary quality control procedures and results
- Published
- 2021
30. Age spectra in North Atlantic Deep Water along the South American continental slope, 10°N–30°S, based on tracer observations
- Author
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Huhn, Oliver, Roether, Wolfgang, and Steinfeldt, Reiner
- Published
- 2008
- Full Text
- View/download PDF
31. Long-term observations of the Atlantic Meridional Overturning Circulation, Cruise No. MSM83, May 17 - June 15, 2019, Las Palmas (Spain) - St. John's (Canada)
- Author
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Kieke, Dagmar, Bulsiewicz, Klaus, Deschepper, Inge, Huhn, Oliver, Kastens, Malinn, Kersting, Arne, K��llner, Manuela, Krisztian, Lina, Leimann, Ilmar, Mirau, Bastian, Moritz, Martin, Rohlfs, Nina, Schneehorst, Anja, Steinfeldt, Reiner, Stendardo, Ilaria, Stiehler, Jan, and Tao, Ran
- Subjects
Earth sciences and geology ,Earth Science - Abstract
MARIA S. MERIAN-Berichte
- Published
- 2020
- Full Text
- View/download PDF
32. NADW transformation at the western boundary between 66 a W / 20 a N and 60 a W / 10 a N
- Author
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Steinfeldt, Reiner, Rhein, Monika, and Walter, Maren
- Subjects
Chlorofluorocarbons ,Earth sciences - Abstract
To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.dsr.2007.03.004 Byline: Reiner Steinfeldt, Monika Rhein, Maren Walter Abstract: The variability of North Atlantic Deep Water (NADW) properties in the western tropical Atlantic between 66.sup.aW/20.sup.aN and 60.sup.aW/10.sup.aN is investigated based on repeated hydrographic sections. The water at the western boundary carries a CFC maximum, indicating the direct transport of newly formed NADW within the Deep Western Boundary Current towards the tropics. The offshore extension of this region with young water varies from 50km at 16.sup.aN to 500km at 10.sup.aN, depending on the width of the continental slope. The mean properties for the different NADW components reflect the changes in the water mass formation regions, especially the Labrador Sea. The greatest signal can be seen in the density range of the Labrador Sea Water (LSW), where a continuous freshening between 2000 and 2004 is observed. This is attributed to the arrival of low-salinity LSW formed in the Labrador Sea after 1988. In addition to the decreasing salinity in the LSW, the two lower NADW components also reveal a freshening trend, as has been observed in the subtropical and subpolar North Atlantic [Dickson. B., Yashayaev, I., Meincke, J., Turrell, B., Dye, S., Holfort, J., 2002. Rapid freshening of the deep North Atlantic Ocean over the past four decades. Nature 416, 832-837]. This tendency is not restricted to the boundary current region, but extends over the whole western tropical Atlantic. The spreading time of NADW from the Labrador Sea to the tropical Atlantic at 16.sup.aN is estimated by the salinity signal to be 10-13 years, corresponding to a mean velocity of 2.0-2.5cm/s. The dilution factor of NADW determined from the CFC difference between the Labrador Sea and the tropics is 4-5 for all components, assuming an admixture of old, CFC-free waters. The NADW properties at 16.sup.aN on isopycnals show large spatial variability along the section. Profiles with high concentration of CFCs and low salinity in the LSW layer occur not only at the western boundary, but also in the interior, where they alternate with profiles influenced by older, CFC-poor water. At 10.sup.aN, the properties especially in the Upper NADW are horizontally homogenized. This is caused by the change of the shape of the continental slope, which is very steep at 16.sup.aN and gradually declining at 10.sup.aN, leading to a broadening of the upper portion of the boundary current between the two sections. The NADW at 10.sup.aN is a composite of the water from the western boundary at 16.sup.aN and about one third admixture of water from the interior. During the spreading from 16.sup.aN to 10.sup.aN, the uppermost portion of the Upper Labrador Sea Water becomes fresher and poor in CFCs by vertical mixing with the overlying Upper Circumpolar Deep Water. The resulting diffusivity K.sub.I is of the order of 10.sup.-4m.sup.2/s. Author Affiliation: Institut fur Umweltphysik, Abt. Ozeanographie, Universitat Bremen, Postfach 330440, 28334 Bremen, Germany Article History: Received 21 July 2006; Revised 2 March 2007; Accepted 9 March 2007
- Published
- 2007
33. An updated version of the global interior ocean biogeochemical data product, GLODAPv2.2020
- Author
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Olsen, Are, Lange, Nico, Key, Robert M., Tanhua, Toste, Bittig, Henry C., Kozyr, Alex, Álvarez, Marta, Azetsu-scott, Kumiko, Becker, Susan, Brown, Peter J., Carter, Brendan R., Cotrim Da Cunha, Leticia, Feely, Richard A., Van Heuven, Steven, Hoppema, Mario, Ishii, Masao, Jeansson, Emil, Jutterström, Sara, Landa, Camilla S., Lauvset, Siv K., Michaelis, Patrick, Murata, Akihiko, Pérez, Fiz F, Pfeil, Benjamin, Schirnick, Carsten, Steinfeldt, Reiner, Suzuki, Toru, Tilbrook, Bronte, Velo, Anton, Wanninkhof, Rik, Woosley, Ryan J., Olsen, Are, Lange, Nico, Key, Robert M., Tanhua, Toste, Bittig, Henry C., Kozyr, Alex, Álvarez, Marta, Azetsu-scott, Kumiko, Becker, Susan, Brown, Peter J., Carter, Brendan R., Cotrim Da Cunha, Leticia, Feely, Richard A., Van Heuven, Steven, Hoppema, Mario, Ishii, Masao, Jeansson, Emil, Jutterström, Sara, Landa, Camilla S., Lauvset, Siv K., Michaelis, Patrick, Murata, Akihiko, Pérez, Fiz F, Pfeil, Benjamin, Schirnick, Carsten, Steinfeldt, Reiner, Suzuki, Toru, Tilbrook, Bronte, Velo, Anton, Wanninkhof, Rik, and Woosley, Ryan J.
- Abstract
The Global Ocean Data Analysis Project (GLODAP) is a synthesis effort providing regular compilations of surface-to-bottom ocean biogeochemical data, with an emphasis on seawater inorganic carbon chemistry and related variables determined through chemical analysis of seawater samples. GLODAPv2.2020 is an update of the previous version, GLODAPv2.2019. The major changes are data from 106 new cruises added, extension of time coverage to 2019, and the inclusion of available (also for historical cruises) discrete fugacity of CO2 (fCO2) values in the merged product files. GLODAPv2.2020 now includes measurements from more than 1.2 million water samples from the global oceans collected on 946 cruises. The data for the 12 GLODAP core variables (salinity, oxygen, nitrate, silicate, phosphate, dissolved inorganic carbon, total alkalinity, pH, CFC-11, CFC-12, CFC-113, and CCl4) have undergone extensive quality control with a focus on systematic evaluation of bias. The data are available in two formats: (i) as submitted by the data originator but updated to WOCE exchange format and (ii) as a merged data product with adjustments applied to minimize bias. These adjustments were derived by comparing the data from the 106 new cruises with the data from the 840 quality-controlled cruises of the GLODAPv2.2019 data product using crossover analysis. Comparisons to empirical algorithm estimates provided additional context for adjustment decisions; this is new to this version. The adjustments are intended to remove potential biases from errors related to measurement, calibration, and data-handling practices without removing known or likely time trends or variations in the variables evaluated. The compiled and adjusted data product is believed to be consistent to better than 0.005 in salinity, 1 % in oxygen, 2 % in nitrate, 2 % in silicate, 2 % in phosphate, 4 µmol kg−1 in dissolved inorganic carbon, 4 µmol kg−1 in total alkalinity, 0.01–0.02 in pH (depending on region), and 5 % in the halo
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- 2020
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34. NADW transformation at the western boundary between [formula omitted] and [formula omitted]
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Steinfeldt, Reiner, Rhein, Monika, and Walter, Maren
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- 2007
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35. Inference of Submarine Meltwater in the Boundary Current System around Greenland in 2015-2019
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Kieke, Dagmar, primary, Huhn, Oliver, additional, Mertens, Christian, additional, Rhein, Monika, additional, Steinfeldt, Reiner, additional, and Wiegand, Kevin N., additional
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- 2021
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36. Transport of South Atlantic water through the passages south of Guadeloupe and across 16[degrees]N, 2000-2004
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Rhein, Monika, Kirchner, Kerstin, Mertens, Christian, Steinfeldt, Reiner, Walter, Maren, and Fleischmann-Wischnath, Ulrich
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Salinity -- Analysis ,Water -- Analysis ,Oceanographic research -- Analysis ,Ocean currents -- Analysis ,Ocean circulation -- Analysis ,Earth sciences - Abstract
To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.dsr.2005.08.003 Byline: Monika Rhein, Kerstin Kirchner, Christian Mertens, Reiner Steinfeldt, Maren Walter, Ulrich Fleischmann-Wischnath Keywords: Ocean circulation; Water mass spreading; Western tropical Atlantic; Western Atlantic; Caribbean Abstract: CTD, vessel-mounted ADCP and LADCP measurements in the Caribbean passages south of Guadeloupe (three repeats) and along 16[degrees]N (five repeats) were carried out between December 2000 and July 2004. The CTD data were used to calculate the contribution of South Atlantic water (SAW) in the upper 1200m between the isopycnals I.sub.I[cedilla]=24.5 and 27.6. Northern and southern source water masses are defined and an isopycnal mixing approach is applied. The SAW fractions are then combined with the ADCP flow field to calculate the transport of SAW into the Caribbean and across 16[degrees]N. The SAW inflow into the Caribbean through the passages south of Guadeloupe ranges from 7.6 to 11.6Sv, which is 50-75% of the total inflow. The mean (9.1[+ or -]2.2Sv) is in the range of previous estimates. Ambiguities in the northern and southern source water masses of the salinity maximum water permitted us only to calculate the contribution of SAW from the eastern source in this water mass. We estimated the additional SAW transport by the western source to be of the order of 1.9[+ or -]0.7Sv. The calculation of the SAW transport across 16[degrees]N was hampered by the presence of several anticyclonic rings from the North Brazil Current (NBC) retroflection region, some of the rings were subsurface intensified. Provided that the rings observed at 16[degrees]N are typical rings and that all rings which are annually produced in the NBC retroflection area (6.5-8.5 per year) reach 16[degrees]N, the SAW ring transport across 16[degrees]N is calculated to 5.3[+ or -]0.7Sv. From the 5 repeats at 16[degrees]N, only two showed a net northward flow, suggesting that the mean northward SAW transport is dominated by ring advection. The joint SAW transports of the Caribbean inflow (9.1Sv) and the flow across 16[degrees]N (5.3Sv) sum up to 14.4Sv. The transport increases to 16.3Sv if the additional SAW transport from the western source of SMW (1.9[+ or -]0.7Sv) is included. These transport estimates and the following implications depend strongly on the assumption that the surface water in the Caribbean inflow is of South Atlantic origin. The transport estimates are, however, in the range of the inverse model calculations for the net cross-hemispheric flow. About 30-40% of this transport is intermediate water from the South Atlantic, presumably supporting studies which found the contributions of intermediate and upper warm water to be of a comparable magnitude. For the upper warm water (I.sub.I[cedilla] Author Affiliation: Institut fur Umweltphysik, FB1, Abt. Ozeanographie, Universitat Bremen, Postfach 330 440, D-28334 Bremen, Germany Article History: Received 10 November 2004; Revised 2 May 2005; Accepted 2 August 2005
- Published
- 2005
37. An updated version of the global interior ocean biogeochemical data product, GLODAPv2.2020
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Olsen, Are, primary, Lange, Nico, additional, Key, Robert M., additional, Tanhua, Toste, additional, Bittig, Henry C., additional, Kozyr, Alex, additional, Álvarez, Marta, additional, Azetsu-Scott, Kumiko, additional, Becker, Susan, additional, Brown, Peter J., additional, Carter, Brendan R., additional, Cotrim da Cunha, Leticia, additional, Feely, Richard A., additional, van Heuven, Steven, additional, Hoppema, Mario, additional, Ishii, Masao, additional, Jeansson, Emil, additional, Jutterström, Sara, additional, Landa, Camilla S., additional, Lauvset, Siv K., additional, Michaelis, Patrick, additional, Murata, Akihiko, additional, Pérez, Fiz F., additional, Pfeil, Benjamin, additional, Schirnick, Carsten, additional, Steinfeldt, Reiner, additional, Suzuki, Toru, additional, Tilbrook, Bronte, additional, Velo, Anton, additional, Wanninkhof, Rik, additional, and Woosley, Ryan J., additional
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- 2020
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38. Supplementary material to "GLODAPv2.2020 – the second update of GLODAPv2"
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Olsen, Are, primary, Lange, Nico, additional, Key, Robert M., additional, Tanhua, Toste, additional, Bittig, Henry C., additional, Kozyr, Alex, additional, Àlvarez, Marta, additional, Azetsu-Scott, Kumiko, additional, Becker, Susan, additional, Brown, Peter J., additional, Carter, Brendan R., additional, Cotrim da Cunha, Leticia, additional, Feely, Richard A., additional, van Heuven, Steven, additional, Hoppema, Mario, additional, Ishii, Masao, additional, Jeansson, Emil, additional, Jutterström, Sara, additional, Landa, Camilla S., additional, Lauvset, Siv K., additional, Michaelis, Patrick, additional, Murata, Akihiko, additional, Pérez, Fiz F., additional, Pfeil, Benjamin, additional, Schirnick, Carsten, additional, Steinfeldt, Reiner, additional, Suzuki, Toru, additional, Tilbrook, Bronte, additional, Velo, Anton, additional, Wanninkhof, Rik, additional, and Woosley, Ryan J., additional
- Published
- 2020
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39. GLODAPv2.2020 – the second update of GLODAPv2
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Olsen, Are, primary, Lange, Nico, additional, Key, Robert M., additional, Tanhua, Toste, additional, Bittig, Henry C., additional, Kozyr, Alex, additional, Àlvarez, Marta, additional, Azetsu-Scott, Kumiko, additional, Becker, Susan, additional, Brown, Peter J., additional, Carter, Brendan R., additional, Cotrim da Cunha, Leticia, additional, Feely, Richard A., additional, van Heuven, Steven, additional, Hoppema, Mario, additional, Ishii, Masao, additional, Jeansson, Emil, additional, Jutterström, Sara, additional, Landa, Camilla S., additional, Lauvset, Siv K., additional, Michaelis, Patrick, additional, Murata, Akihiko, additional, Pérez, Fiz F., additional, Pfeil, Benjamin, additional, Schirnick, Carsten, additional, Steinfeldt, Reiner, additional, Suzuki, Toru, additional, Tilbrook, Bronte, additional, Velo, Anton, additional, Wanninkhof, Rik, additional, and Woosley, Ryan J., additional
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- 2020
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40. Heat and Freshwater Transport by Mesoscale Eddies in the Southern Subpolar North Atlantic
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Muller, Vasco, Kieke, Dagmar, Myers, Paul G., Pennelly, Clark, Steinfeldt, Reiner, and Stendardo, Ilaria
- Abstract
A new data set of temperature and salinity fields reconstructed from satellite altimetry data between January 1993 and April 2014 is combined with satellite observations of mesoscale eddies in the subpolar North Atlantic between 40°N–55°N and 43°W–20.5°W. The data set is used to calculate the meridional heat and freshwater transports related to the propagation of eddies crossing 47°N, a latitude close to the boundary between the subpolar and the subtropical gyres. The largest heat and freshwater transports by eddies are observed in the western part of the Newfoundland Basin. Around 35–45% of the heat and freshwater transports by eddies across 47°N stem from individual isolated eddies with large thermohaline signatures. Northward moving cold and fresh cyclonic eddies carrying subpolar water from the Western Boundary Current make a considerable contribution to the overall heat and freshwater transport by eddies crossing 47°N. While the transport by individual eddies is negligible compared to the transport by the mean flow in this region, it can have a notable influence on the temporal variability. The analysis is repeated for a model simulation with 1/12° horizontal resolution for the period 2002–2013. The observed results are well reproduced in the model simulation; in particular, the modeled number of eddies crossing 47°N, the spatial distribution, and the associated heat and freshwater transports across this latitude are consistent with the observations.
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- 2019
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41. Subpolar Gyre Variability, Cruise No. MSM73, April 06 - May 22, 2018, C��diz (Spain) - St. John's (Canada)
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Kieke, Dagmar, Arruda Monteiro Da Silva, Ricardo, Azetsu-Scott, Kumiko, Binnemann, Nico, Buinyi, Aleksei, Bulsiewicz, Klaus, Feucher, Charl��ne, Huhn, Oliver, K��llner, Manuela, Mart��nez M��ndez, Gema, Nowitzki, Hannah, Oelsmann, Julius, R��hler, Aaron, Rohlfs, Nina, Schneehorst, Anja, Steinfeldt, Reiner, Uhde, Hans-Hermann, Wiegand, Kevin, and Wischnewski, Fanny
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Earth sciences and geology ,Earth Science - Abstract
MARIA S. MERIAN-Berichte
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- 2019
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42. Ages and age spectra of Eastern Mediterranean Deep Water
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Steinfeldt, Reiner
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- 2004
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43. GLODAPv2.2019-an update of GLODAPv2
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Olsen, Are, Lange, Nico, Key, Robert M., Tanhua, Toste, Alvarez, Marta, Becker, Susan, Bittig, Henry C., Carter, Brendan R., Da Cunha, Leticia Cotrim, Feely, Richard A., Van Heuven, Steven, Hoppema, Mario, Ishii, Masao, Jeansson, Emil, Jones, Steve D., Jutterstrom, Sara, Karlsen, Maren K., Kozyr, Alex, Lauvset, Siv K., Lo Monaco, Claire, Murata, Akihiko, Perez, Fiz F, Pfeil, Benjamin, Schirnick, Carsten, Steinfeldt, Reiner, Suzuki, Toru, Telszewski, Maciej, Tilbrook, Bronte, Velo, Anton, Wanninkhof, Rik, Olsen, Are, Lange, Nico, Key, Robert M., Tanhua, Toste, Alvarez, Marta, Becker, Susan, Bittig, Henry C., Carter, Brendan R., Da Cunha, Leticia Cotrim, Feely, Richard A., Van Heuven, Steven, Hoppema, Mario, Ishii, Masao, Jeansson, Emil, Jones, Steve D., Jutterstrom, Sara, Karlsen, Maren K., Kozyr, Alex, Lauvset, Siv K., Lo Monaco, Claire, Murata, Akihiko, Perez, Fiz F, Pfeil, Benjamin, Schirnick, Carsten, Steinfeldt, Reiner, Suzuki, Toru, Telszewski, Maciej, Tilbrook, Bronte, Velo, Anton, and Wanninkhof, Rik
- Abstract
The Global Ocean Data Analysis Project (GLODAP) is a synthesis effort providing regular compilations of surface to bottom ocean biogeochemical data, with an emphasis on seawater inorganic carbon chemistry and related variables determined through chemical analysis of water samples. This update of GLODAPv2, v2.2019, adds data from 116 cruises to the previous version, extending its coverage in time from 2013 to 2017, while also adding some data from prior years. GLODAPv2.2019 includes measurements from more than 1.1 million water samples from the global oceans collected on 840 cruises. The data for the 12 GLODAP core variables (salinity, oxygen, nitrate, silicate, phosphate, dissolved inorganic carbon, total alkalinity, pH, CFC-11, CFC-12, CFC-113, and CCl4) have undergone extensive quality control, especially systematic evaluation of bias. The data are available in two formats: (i) as submitted by the data originator but updated to WOCE exchange format and (ii) as a merged data product with adjustments applied to minimize bias. These adjustments were derived by comparing the data from the 116 new cruises with the data from the 724 quality-controlled cruises of the GLODAPv2 data product. They correct for errors related to measurement, calibration, and data handling practices, taking into account any known or likely time trends or variations. The compiled and adjusted data product is believed to be consistent to better than 0.005 in salinity, 1% in oxygen, 2% in nitrate, 2% in silicate, 2% in phosphate, 4 mu mol kg(-1) in dissolved inorganic carbon, 4 mu mol kg(-1) in total alkalinity, 0.01-0.02 in pH, and 5% in the halogenated transient tracers. The compilation also includes data for several other variables, such as isotopic tracers. These were not subjected to bias comparison or adjustments. The original data, their documentation and DOI codes are available in the Ocean Carbon Data System of NOAA NCEI (https://www.nodc.noaa.gov/ocads/oceans/GLODAPv2_2019/, last access
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- 2019
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44. Neodymium isotopic composition and concentration in the western North Atlantic Ocean: Results from the GEOTRACES GA02 section
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Lambelet, Myriam, van de Flierdt, Tina, Crocket, Kirsty, Rehkämper, Mark, Kreissig, Katharina, Coles, Barry, Rijkenberg, Micha J.A., Gerringa, Loes J.A., de Baar, Hein J.W., Steinfeldt, Reiner, Ocean Ecosystems, and Natural Environment Research Council (NERC)
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Geochemistry & Geophysics ,Science & Technology ,MEDITERRANEAN OUTFLOW ,DENMARK STRAIT ,SEAWATER ,EASTERN INDIAN-OCEAN ,RARE-EARTH-ELEMENT ,ND-ISOTOPES ,Neodymium isotopic ,0403 Geology ,Geochemistry and Petrology ,Physical Sciences ,0402 Geochemistry ,DEEP-WATER ,SURFACE WATERS ,0406 Physical Geography and Environmental Geoscience ,SOUTHERN-OCEAN ,MERIDIONAL OVERTURNING CIRCULATION - Abstract
The neodymium (Nd) isotopic composition of seawater is commonly used as a proxy to study past changes in the thermohaline circulation. The modern database for such reconstructions is however poor and the understanding of the underlying processes is incomplete. Here we present new observational data for Nd isotopes and concentrations from twelve seawater depth profiles, which follow the flow path of North Atlantic Deep Water (NADW) from its formation region in the North Atlantic to the northern equatorial Atlantic. Samples were collected during two cruises constituting the northern part of the Dutch GEOTRACES transect GA02 in 2010. The results show that the different water masses in the subpolar North Atlantic Ocean, which ultimately constitute NADW, have the following Nd isotope characteristics: Upper Labrador Sea Water (ULSW), eNd = -14.2 ± 0.3; Labrador Sea Water (LSW), eNd = -13.7 ± 0.9; Northeast Atlantic Deep Water (NEADW), eNd = -12.5 ± 0.6; Northwest Atlantic Bottom Water (NWABW), eNd = -11.8 ± 1.4. In the subtropics, where these source water masses have mixed to form NADW, which is exported to the global ocean, upper-NADW is characterised by eNd values of -13.2 ± 1.0 (2sd) and lower-NADW exhibits values of eNd = -12.4 ± 0.4 (2sd). While both signatures overlap within error, the signature for lower-NADW is significantly more radiogenic than the traditionally used value for NADW (eNd = -13.5) due to the dominance of source waters from the Nordic Seas (NWABW and NEADW). Comparison between the concentration profiles and the corresponding Nd isotope profiles with other water mass properties such as salinity, silicate concentrations, neutral densities and chlorofluorocarbon (CFC) concentration provides novel insights into the geochemical cycle of Nd and reveals that different processes are necessary to account for the observed Nd characteristics in the subpolar and subtropical gyres and throughout the vertical water column. While our data set provides additional insights into the contribution of boundary exchange in areas of sediment resuspension, the results for open ocean seawater demonstrate, at an unprecedented level, the suitability of Nd isotopes to trace modern water masses in the strongly advecting western Atlantic Ocean.
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- 2016
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45. Evolution of Pa-231 and Th-230 in overflow waters of the North Atlantic
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Deng, Feifei, Henderson, Gideon M., Castrillejo, Maxi, Pérez, Fiz F., Steinfeldt, Reiner, Oxford Brookes University, Department of Earth Sciences, University of Oxford, University of Oxford [Oxford], Spanish National Research Council (CSIC), Universität Bremen, French National Research AgencyFrench National Research Agency (ANR) [ANR-13-BS06-0014, ANR-12-PDOC-0025-01], French National Centre for Scientific Research (CNRS-LEFE-CYBER), LabexMER [ANR-10-LABX-19], and Ifremer
- Subjects
[SDV.MP.BAC]Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology - Abstract
Many palaeoceanographic studies have sought to use the Pa-231/Th-230 ratio as a proxy for deep ocean circulation rates in the North Atlantic. As of yet, however, no study has fully assessed the concentration of, or controls on, Th-230 and Pa-231 in waters immediately following ventilation at the start of Atlantic meridional overturning. To that end, full water-column Pa-231 and Th-230 concentrations were measured along the GEOVIDE section, sampling a range of young North Atlantic deep waters. Th-230 and Pa-231 concentrations in the water column are lower than those observed further south in the Atlantic, ranging between 0.06 and 12.01 mu Bq kg(-1) and between 0.37 and 4.80 mu Bq kg(-1), respectively. Both Th-230 and Pa-231 profiles generally increase with water depth from surface to deep water, followed by decrease near the seafloor, with this feature most pronounced in the Labrador Sea (LA Sea) and Irminger Sea (IR Sea). Assessing this dataset using extended optimum multi-parameter (eOMP) analysis and CFC-based water mass age indicates that the low values of Th-230 and Pa-231 in water near the seafloor of the LA Sea and IR Sea are related to the young waters present in those regions. The importance of water age is confirmed for Th-230 by a strong correlation between Th-230 and water mass age (though this relationship with age is less clear for Pa-231 and the Pa-231/Th-230 ratio). Scavenged Pa-231 and Th-230 were estimated and compared to their potential concentrations in the water column due to ingrowth. This calculation indicates that more Th-230 is scavenged (similar to 80%) than Pa-231 (similar to 40%), consistent with the relatively higher particle reactivity of Th-230. Enhanced scavenging for both nuclides is demonstrated near the seafloor in young over-flow waters. Calculation of the meridional transport of Th-230 and Pa-231 with this new GEOVIDE dataset enables a complete budget for Th-230 and Pa-231 for the North Atlantic. Results suggest that net transport southward of Th-230 and Pa-231 across GEOVIDE is smaller than transport further south in the Atlantic, and indicate that the flux to sediment in the North Atlantic is equivalent to 96% of the production of Th-230 and 74% of the production for Pa-231. This result confirms a significantly higher advective loss of Pa-231 to the south relative to Th-230 and supports the use of Pa-231/Th-230 to assess meridional transport at a basin scale.
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- 2018
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46. GLODAPv2.2019 – an update of GLODAPv2
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Olsen, Are, primary, Lange, Nico, additional, Key, Robert M., additional, Tanhua, Toste, additional, Álvarez, Marta, additional, Becker, Susan, additional, Bittig, Henry C., additional, Carter, Brendan R., additional, Cotrim da Cunha, Leticia, additional, Feely, Richard A., additional, van Heuven, Steven, additional, Hoppema, Mario, additional, Ishii, Masao, additional, Jeansson, Emil, additional, Jones, Steve D., additional, Jutterström, Sara, additional, Karlsen, Maren K., additional, Kozyr, Alex, additional, Lauvset, Siv K., additional, Lo Monaco, Claire, additional, Murata, Akihiko, additional, Pérez, Fiz F., additional, Pfeil, Benjamin, additional, Schirnick, Carsten, additional, Steinfeldt, Reiner, additional, Suzuki, Toru, additional, Telszewski, Maciej, additional, Tilbrook, Bronte, additional, Velo, Anton, additional, and Wanninkhof, Rik, additional
- Published
- 2019
- Full Text
- View/download PDF
47. Heat and Freshwater Transport by Mesoscale Eddies in the Southern Subpolar North Atlantic
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Müller, Vasco, primary, Kieke, Dagmar, additional, Myers, Paul G., additional, Pennelly, Clark, additional, Steinfeldt, Reiner, additional, and Stendardo, Ilaria, additional
- Published
- 2019
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48. The GEOTRACES Intermediate Data Product 2017
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50197000, 30830202, Schlitzer, Reiner, Anderson, Robert F., Dodas, Elena Masferrer, Lohan, Maeve, Geibert, Walter, Tagliabue, Alessandro, Bowie, Andrew, Jeandel, Catherine, Maldonado, Maria T., Landing, William M., Cockwell, Donna, Abadie, Cyril, Abouchami, Wafa, Achterberg, Eric P., Agather, Alison, Aguliar-Islas, Ana, van Aken, Hendrik M., Andersen, Morten, Archer, Corey, Auro, Maureen, de Baar, Hein J., Baars, Oliver, Baker, Alex R., Bakker, Karel, Basak, Chandranath, Baskaran, Mark, Bates, Nicholas R., Bauch, Dorothea, van Beek, Pieter, Behrens, Melanie K., Black, Erin, Bluhm, Katrin, Bopp, Laurent, Bouman, Heather, Bowman, Katlin, Bown, Johann, Boyd, Philip, Boye, Marie, Boyle, Edward A., Branellec, Pierre, Bridgestock, Luke, Brissebrat, Guillaume, Browning, Thomas, Bruland, Kenneth W., Brumsack, Hans-Jürgen, Brzezinski, Mark, Buck, Clifton S., Buck, Kristen N., Buesseler, Ken, Bull, Abby, Butler, Edward, Cai, Pinghe, Mor, Patricia Cámara, Cardinal, Damien, Carlson, Craig, Carrasco, Gonzalo, Casacuberta, Núria, Casciotti, Karen L., Castrillejo, Maxi, Chamizo, Elena, Chance, Rosie, Charette, Matthew A., Chaves, Joaquin E., Cheng, Hai, Chever, Fanny, Christl, Marcus, Church, Thomas M., Closset, Ivia, Colman, Albert, Conway, Tim M., Cossa, Daniel, Croot, Peter, Cullen, Jay T., Cutter, Gregory A., Daniels, Chris, Dehairs, Frank, Deng, Feifei, Dieu, Huong Thi, Duggan, Brian, Dulaquais, Gabriel, Dumousseaud, Cynthia, Echegoyen-Sanz, Yolanda, Edwards, R. Lawrence, Ellwood, Michael, Fahrbach, Eberhard, Fitzsimmons, Jessica N., Russell Flegal, A., Fleisher, Martin Q., van de Flierdt, Tina, Frank, Martin, Friedrich, Jana, Fripiat, Francois, Fröllje, Henning, Galer, Stephen J.G., Gamo, Toshitaka, Ganeshram, Raja S., Garcia-Orellana, Jordi, Garcia-Solsona, Ester, Gault-Ringold, Melanie, George, Ejin, Gerringa, Loes J.A., Gilbert, Melissa, Godoy, Jose M., Goldstein, Steven L., Gonzalez, Santiago R., Grissom, Karen, Hammerschmidt, Chad, Hartman, Alison, Hassler, Christel S., Hathorne, Ed C., Hatta, Mariko, Hawco, Nicholas, Hayes, Christopher T., Heimbürger, Lars-Eric, Helgoe, Josh, Heller, Maija, Henderson, Gideon M., Henderson, Paul B., van Heuven, Steven, Ho, Peng, Horner, Tristan J., Hsieh, Yu-Te, Huang, Kuo-Fang, Humphreys, Matthew P., Isshiki, Kenji, Jacquot, Jeremy E., Janssen, David J., Jenkins, William J., John, Seth, Jones, Elizabeth M., Jones, Janice L., Kadko, David C., Kayser, Rick, Kenna, Timothy C., Khondoker, Roulin, Kim, Taejin, Kipp, Lauren, Klar, Jessica K., Klunder, Maarten, Kretschmer, Sven, Kumamoto, Yuichiro, Laan, Patrick, Labatut, Marie, Lacan, Francois, Lam, Phoebe J., Lambelet, Myriam, Lamborg, Carl H., Le Moigne, Frédéric A.C., Le Roy, Emilie, Lechtenfeld, Oliver J., Lee, Jong-Mi, Lherminier, Pascale, Little, Susan, López-Lora, Mercedes, Lu, Yanbin, Masque, Pere, Mawji, Edward, Mcclain, Charles R., Measures, Christopher, Mehic, Sanjin, Barraqueta, Jan-Lukas Menzel, van der Merwe, Pier, Middag, Rob, Mieruch, Sebastian, Milne, Angela, Minami, Tomoharu, Moffett, James W., Moncoiffe, Gwenaelle, Moore, Willard S., Morris, Paul J., Morton, Peter L., Nakaguchi, Yuzuru, Nakayama, Noriko, Niedermiller, John, Nishioka, Jun, Nishiuchi, Akira, Noble, Abigail, Obata, Hajime, Ober, Sven, Ohnemus, Daniel C., van Ooijen, Jan, O'Sullivan, Jeanette, Owens, Stephanie, Pahnke, Katharina, Paul, Maxence, Pavia, Frank, Pena, Leopoldo D., Peters, Brian, Planchon, Frederic, Planquette, Helene, Pradoux, Catherine, Puigcorbé, Viena, Quay, Paul, Queroue, Fabien, Radic, Amandine, Rauschenberg, S., Rehkämper, Mark, Rember, Robert, Remenyi, Tomas, Resing, Joseph A., Rickli, Joerg, Rigaud, Sylvain, Rijkenberg, Micha J.A., Rintoul, Stephen, Robinson, Laura F., Roca-Martí, Montserrat, Rodellas, Valenti, Roeske, Tobias, Rolison, John M., Rosenberg, Mark, Roshan, Saeed, Rutgers van der Loeff, Michiel M., Ryabenko, Evgenia, Saito, Mak A., Salt, Lesley A., Sanial, Virginie, Sarthou, Geraldine, Schallenberg, Christina, Schauer, Ursula, Scher, Howie, Schlosser, Christian, Schnetger, Bernhard, Scott, Peter, Sedwick, Peter N., Semiletov, Igor, Shelley, Rachel, Sherrell, Robert M., Shiller, Alan M., Sigman, Daniel M., Singh, Sunil Kumar, Slagter, Hans A., Slater, Emma, Smethie, William M., Snaith, Helen, Sohrin, Yoshiki, Sohst, Bettina, Sonke, Jeroen E., Speich, Sabrina, Steinfeldt, Reiner, Stewart, Gillian, Stichel, Torben, Stirling, Claudine H., Stutsman, Johnny, Swarr, Gretchen J., Swift, James H., Thomas, Alexander, Thorne, Kay, Till, Claire P., Till, Ralph, Townsend, Ashley T., Townsend, Emily, Tuerena, Robyn, Twining, Benjamin S., Vance, Derek, Velazquez, Sue, Venchiarutti, Celia, Villa-Alfageme, Maria, Vivancos, Sebastian M., Voelker, Antje H.L., Wake, Bronwyn, Warner, Mark J., Watson, Ros, van Weerlee, Evaline, Alexandra Weigand, M., Weinstein, Yishai, Weiss, Dominik, Wisotzki, Andreas, Woodward, E. Malcolm S., Wu, Jingfeng, Wu, Yingzhe, Wuttig, Kathrin, Wyatt, Neil, Xiang, Yang, Xie, Ruifang C., Xue, Zichen, Yoshikawa, Hisayuki, Zhang, Jing, Zhang, Pu, Zhao, Ye, Zheng, Linjie, Zheng, Xin-Yuan, Zieringer, Moritz, Zimmer, Louise A., Ziveri, Patrizia, Zunino, Patricia, Zurbrick, Cheryl, 50197000, 30830202, Schlitzer, Reiner, Anderson, Robert F., Dodas, Elena Masferrer, Lohan, Maeve, Geibert, Walter, Tagliabue, Alessandro, Bowie, Andrew, Jeandel, Catherine, Maldonado, Maria T., Landing, William M., Cockwell, Donna, Abadie, Cyril, Abouchami, Wafa, Achterberg, Eric P., Agather, Alison, Aguliar-Islas, Ana, van Aken, Hendrik M., Andersen, Morten, Archer, Corey, Auro, Maureen, de Baar, Hein J., Baars, Oliver, Baker, Alex R., Bakker, Karel, Basak, Chandranath, Baskaran, Mark, Bates, Nicholas R., Bauch, Dorothea, van Beek, Pieter, Behrens, Melanie K., Black, Erin, Bluhm, Katrin, Bopp, Laurent, Bouman, Heather, Bowman, Katlin, Bown, Johann, Boyd, Philip, Boye, Marie, Boyle, Edward A., Branellec, Pierre, Bridgestock, Luke, Brissebrat, Guillaume, Browning, Thomas, Bruland, Kenneth W., Brumsack, Hans-Jürgen, Brzezinski, Mark, Buck, Clifton S., Buck, Kristen N., Buesseler, Ken, Bull, Abby, Butler, Edward, Cai, Pinghe, Mor, Patricia Cámara, Cardinal, Damien, Carlson, Craig, Carrasco, Gonzalo, Casacuberta, Núria, Casciotti, Karen L., Castrillejo, Maxi, Chamizo, Elena, Chance, Rosie, Charette, Matthew A., Chaves, Joaquin E., Cheng, Hai, Chever, Fanny, Christl, Marcus, Church, Thomas M., Closset, Ivia, Colman, Albert, Conway, Tim M., Cossa, Daniel, Croot, Peter, Cullen, Jay T., Cutter, Gregory A., Daniels, Chris, Dehairs, Frank, Deng, Feifei, Dieu, Huong Thi, Duggan, Brian, Dulaquais, Gabriel, Dumousseaud, Cynthia, Echegoyen-Sanz, Yolanda, Edwards, R. Lawrence, Ellwood, Michael, Fahrbach, Eberhard, Fitzsimmons, Jessica N., Russell Flegal, A., Fleisher, Martin Q., van de Flierdt, Tina, Frank, Martin, Friedrich, Jana, Fripiat, Francois, Fröllje, Henning, Galer, Stephen J.G., Gamo, Toshitaka, Ganeshram, Raja S., Garcia-Orellana, Jordi, Garcia-Solsona, Ester, Gault-Ringold, Melanie, George, Ejin, Gerringa, Loes J.A., Gilbert, Melissa, Godoy, Jose M., Goldstein, Steven L., Gonzalez, Santiago R., Grissom, Karen, Hammerschmidt, Chad, Hartman, Alison, Hassler, Christel S., Hathorne, Ed C., Hatta, Mariko, Hawco, Nicholas, Hayes, Christopher T., Heimbürger, Lars-Eric, Helgoe, Josh, Heller, Maija, Henderson, Gideon M., Henderson, Paul B., van Heuven, Steven, Ho, Peng, Horner, Tristan J., Hsieh, Yu-Te, Huang, Kuo-Fang, Humphreys, Matthew P., Isshiki, Kenji, Jacquot, Jeremy E., Janssen, David J., Jenkins, William J., John, Seth, Jones, Elizabeth M., Jones, Janice L., Kadko, David C., Kayser, Rick, Kenna, Timothy C., Khondoker, Roulin, Kim, Taejin, Kipp, Lauren, Klar, Jessica K., Klunder, Maarten, Kretschmer, Sven, Kumamoto, Yuichiro, Laan, Patrick, Labatut, Marie, Lacan, Francois, Lam, Phoebe J., Lambelet, Myriam, Lamborg, Carl H., Le Moigne, Frédéric A.C., Le Roy, Emilie, Lechtenfeld, Oliver J., Lee, Jong-Mi, Lherminier, Pascale, Little, Susan, López-Lora, Mercedes, Lu, Yanbin, Masque, Pere, Mawji, Edward, Mcclain, Charles R., Measures, Christopher, Mehic, Sanjin, Barraqueta, Jan-Lukas Menzel, van der Merwe, Pier, Middag, Rob, Mieruch, Sebastian, Milne, Angela, Minami, Tomoharu, Moffett, James W., Moncoiffe, Gwenaelle, Moore, Willard S., Morris, Paul J., Morton, Peter L., Nakaguchi, Yuzuru, Nakayama, Noriko, Niedermiller, John, Nishioka, Jun, Nishiuchi, Akira, Noble, Abigail, Obata, Hajime, Ober, Sven, Ohnemus, Daniel C., van Ooijen, Jan, O'Sullivan, Jeanette, Owens, Stephanie, Pahnke, Katharina, Paul, Maxence, Pavia, Frank, Pena, Leopoldo D., Peters, Brian, Planchon, Frederic, Planquette, Helene, Pradoux, Catherine, Puigcorbé, Viena, Quay, Paul, Queroue, Fabien, Radic, Amandine, Rauschenberg, S., Rehkämper, Mark, Rember, Robert, Remenyi, Tomas, Resing, Joseph A., Rickli, Joerg, Rigaud, Sylvain, Rijkenberg, Micha J.A., Rintoul, Stephen, Robinson, Laura F., Roca-Martí, Montserrat, Rodellas, Valenti, Roeske, Tobias, Rolison, John M., Rosenberg, Mark, Roshan, Saeed, Rutgers van der Loeff, Michiel M., Ryabenko, Evgenia, Saito, Mak A., Salt, Lesley A., Sanial, Virginie, Sarthou, Geraldine, Schallenberg, Christina, Schauer, Ursula, Scher, Howie, Schlosser, Christian, Schnetger, Bernhard, Scott, Peter, Sedwick, Peter N., Semiletov, Igor, Shelley, Rachel, Sherrell, Robert M., Shiller, Alan M., Sigman, Daniel M., Singh, Sunil Kumar, Slagter, Hans A., Slater, Emma, Smethie, William M., Snaith, Helen, Sohrin, Yoshiki, Sohst, Bettina, Sonke, Jeroen E., Speich, Sabrina, Steinfeldt, Reiner, Stewart, Gillian, Stichel, Torben, Stirling, Claudine H., Stutsman, Johnny, Swarr, Gretchen J., Swift, James H., Thomas, Alexander, Thorne, Kay, Till, Claire P., Till, Ralph, Townsend, Ashley T., Townsend, Emily, Tuerena, Robyn, Twining, Benjamin S., Vance, Derek, Velazquez, Sue, Venchiarutti, Celia, Villa-Alfageme, Maria, Vivancos, Sebastian M., Voelker, Antje H.L., Wake, Bronwyn, Warner, Mark J., Watson, Ros, van Weerlee, Evaline, Alexandra Weigand, M., Weinstein, Yishai, Weiss, Dominik, Wisotzki, Andreas, Woodward, E. Malcolm S., Wu, Jingfeng, Wu, Yingzhe, Wuttig, Kathrin, Wyatt, Neil, Xiang, Yang, Xie, Ruifang C., Xue, Zichen, Yoshikawa, Hisayuki, Zhang, Jing, Zhang, Pu, Zhao, Ye, Zheng, Linjie, Zheng, Xin-Yuan, Zieringer, Moritz, Zimmer, Louise A., Ziveri, Patrizia, Zunino, Patricia, and Zurbrick, Cheryl
- Published
- 2018
49. Evolution of 231Pa and 230Th in overflow waters of the North Atlantic
- Author
-
Deng, Feifei, Henderson, Gideon M., Castrillejo, Maxi, Perez, Fiz F, Steinfeldt, Reiner, Deng, Feifei, Henderson, Gideon M., Castrillejo, Maxi, Perez, Fiz F, and Steinfeldt, Reiner
- Abstract
Many palaeoceanographic studies have sought to use the 231Pa∕230Th ratio as a proxy for deep ocean circulation rates in the North Atlantic. As of yet, however, no study has fully assessed the concentration of, or controls on, 230Th and 231Pa in waters immediately following ventilation at the start of Atlantic meridional overturning. To that end, full water-column 231Pa and 230Th concentrations were measured along the GEOVIDE section, sampling a range of young North Atlantic deep waters. 230Th and 231Pa concentrations in the water column are lower than those observed further south in the Atlantic, ranging between 0.06 and 12.01 µBq kg−1 and between 0.37 and 4.80 µBq kg−1, respectively. Both 230Th and 231Pa profiles generally increase with water depth from surface to deep water, followed by decrease near the seafloor, with this feature most pronounced in the Labrador Sea (LA Sea) and Irminger Sea (IR Sea). Assessing this dataset using extended optimum multi-parameter (eOMP) analysis and CFC-based water mass age indicates that the low values of 230Th and 231Pa in water near the seafloor of the LA Sea and IR Sea are related to the young waters present in those regions. The importance of water age is confirmed for 230Th by a strong correlation between 230Th and water mass age (though this relationship with age is less clear for 231Pa and the 231Pa∕230Th ratio). Scavenged 231Pa and 230Th were estimated and compared to their potential concentrations in the water column due to ingrowth. This calculation indicates that more 230Th is scavenged (∼80 %) than 231Pa (∼40 %), consistent with the relatively higher particle reactivity of 230Th. Enhanced scavenging for both nuclides is demonstrated near the seafloor in young overflow waters. Calculation of the meridional transport of 230Th and 231Pa with this new GEOVIDE dataset enables a complete budget for 230Th and 231Pa for the North Atlantic. Results suggest that net transport southward of 230Th and 231Pa across GEOVIDE is small
- Published
- 2018
- Full Text
- View/download PDF
50. Nitrous oxide in the North Atlantic Meridional Overturning Circulation
- Author
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Ministerio de Economía y Competitividad (España), Paz, M. de la, García-Ibáñez, Maribel I., Steinfeldt, Reiner, Pérez, Fiz F., Ministerio de Economía y Competitividad (España), Paz, M. de la, García-Ibáñez, Maribel I., Steinfeldt, Reiner, and Pérez, Fiz F.
- Published
- 2018
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