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201. Global terrestrial water storage and drought severity under climate change

Author

Pokhrel, Yadu, primary, Felfelani, Farshid, additional, Satoh, Yusuke, additional, Boulange, Julien, additional, Burek, Peter, additional, Gädeke, Anne, additional, Gerten, Dieter, additional, Gosling, Simon N., additional, Grillakis, Manolis, additional, Gudmundsson, Lukas, additional, Hanasaki, Naota, additional, Kim, Hyungjun, additional, Koutroulis, Aristeidis, additional, Liu, Junguo, additional, Papadimitriou, Lamprini, additional, Schewe, Jacob, additional, Müller Schmied, Hannes, additional, Stacke, Tobias, additional, Telteu, Camelia-Eliza, additional, Thiery, Wim, additional, Veldkamp, Ted, additional, Zhao, Fang, additional, and Wada, Yoshihide, additional

Published
2021
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202. Supplementary material to "Understanding each other's models: a standard representation of global water models to support improvement, intercomparison, and communication"

Author

Telteu, Camelia-Eliza, primary, Müller Schmied, Hannes, additional, Thiery, Wim, additional, Leng, Guoyong, additional, Burek, Peter, additional, Liu, Xingcai, additional, Boulange, Julien Eric Stanislas, additional, Seaby Andersen, Lauren, additional, Grillakis, Manolis, additional, Gosling, Simon Newland, additional, Satoh, Yusuke, additional, Rakovec, Oldrich, additional, Stacke, Tobias, additional, Chang, Jinfeng, additional, Wanders, Niko, additional, Shah, Harsh Lovekumar, additional, Trautmann, Tim, additional, Mao, Ganquan, additional, Hanasaki, Naota, additional, Koutroulis, Aristeidis, additional, Pokhrel, Yadu, additional, Samaniego, Luis, additional, Wada, Yoshihide, additional, Mishra, Vimal, additional, Liu, Junguo, additional, Döll, Petra, additional, Zhao, Fang, additional, Gädeke, Anne, additional, Rabin, Sam, additional, and Herz, Florian, additional

Published
2021
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203. Understanding each other's models: a standard representation of global water models to support improvement, intercomparison, and communication

Author

Telteu, Camelia-Eliza, primary, Müller Schmied, Hannes, additional, Thiery, Wim, additional, Leng, Guoyong, additional, Burek, Peter, additional, Liu, Xingcai, additional, Boulange, Julien Eric Stanislas, additional, Seaby Andersen, Lauren, additional, Grillakis, Manolis, additional, Gosling, Simon Newland, additional, Satoh, Yusuke, additional, Rakovec, Oldrich, additional, Stacke, Tobias, additional, Chang, Jinfeng, additional, Wanders, Niko, additional, Shah, Harsh Lovekumar, additional, Trautmann, Tim, additional, Mao, Ganquan, additional, Hanasaki, Naota, additional, Koutroulis, Aristeidis, additional, Pokhrel, Yadu, additional, Samaniego, Luis, additional, Wada, Yoshihide, additional, Mishra, Vimal, additional, Liu, Junguo, additional, Döll, Petra, additional, Zhao, Fang, additional, Gädeke, Anne, additional, Rabin, Sam, additional, and Herz, Florian, additional

Published
2021
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207. Deeper waters are changing less consistently than surface waters in a global analysis of 102 lakes

Author

Pilla, Rachel M., primary, Williamson, Craig E., additional, Adamovich, Boris V., additional, Adrian, Rita, additional, Anneville, Orlane, additional, Chandra, Sudeep, additional, Colom-Montero, William, additional, Devlin, Shawn P., additional, Dix, Margaret A., additional, Dokulil, Martin T., additional, Gaiser, Evelyn E., additional, Girdner, Scott F., additional, Hambright, K. David, additional, Hamilton, David P., additional, Havens, Karl, additional, Hessen, Dag O., additional, Higgins, Scott N., additional, Huttula, Timo H., additional, Huuskonen, Hannu, additional, Isles, Peter D. F., additional, Joehnk, Klaus D., additional, Jones, Ian D., additional, Keller, Wendel Bill, additional, Knoll, Lesley B., additional, Korhonen, Johanna, additional, Kraemer, Benjamin M., additional, Leavitt, Peter R., additional, Lepori, Fabio, additional, Luger, Martin S., additional, Maberly, Stephen C., additional, Melack, John M., additional, Melles, Stephanie J., additional, Müller-Navarra, Dörthe C., additional, Pierson, Don C., additional, Pislegina, Helen V., additional, Plisnier, Pierre-Denis, additional, Richardson, David C., additional, Rimmer, Alon, additional, Rogora, Michela, additional, Rusak, James A., additional, Sadro, Steven, additional, Salmaso, Nico, additional, Saros, Jasmine E., additional, Saulnier-Talbot, Émilie, additional, Schindler, Daniel E., additional, Schmid, Martin, additional, Shimaraeva, Svetlana V., additional, Silow, Eugene A., additional, Sitoki, Lewis M., additional, Sommaruga, Ruben, additional, Straile, Dietmar, additional, Strock, Kristin E., additional, Thiery, Wim, additional, Timofeyev, Maxim A., additional, Verburg, Piet, additional, Vinebrooke, Rolf D., additional, Weyhenmeyer, Gesa A., additional, and Zadereev, Egor, additional

Published
2020
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208. Global climate response to idealized deforestation in CMIP6 models

Author

Boysen, Lena R., primary, Brovkin, Victor, additional, Pongratz, Julia, additional, Lawrence, David M., additional, Lawrence, Peter, additional, Vuichard, Nicolas, additional, Peylin, Philippe, additional, Liddicoat, Spencer, additional, Hajima, Tomohiro, additional, Zhang, Yanwu, additional, Rocher, Matthias, additional, Delire, Christine, additional, Séférian, Roland, additional, Arora, Vivek K., additional, Nieradzik, Lars, additional, Anthoni, Peter, additional, Thiery, Wim, additional, Laguë, Marysa M., additional, Lawrence, Deborah, additional, and Lo, Min-Hui, additional

Published
2020
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209. Burning embers: towards more transparent and robust climate-change risk assessments

Author

Zommers, Zinta, primary, Marbaix, Philippe, additional, Fischlin, Andreas, additional, Ibrahim, Zelina Z., additional, Grant, Sean, additional, Magnan, Alexandre K., additional, Pörtner, Hans-Otto, additional, Howden, Mark, additional, Calvin, Katherine, additional, Warner, Koko, additional, Thiery, Wim, additional, Sebesvari, Zita, additional, Davin, Edouard L., additional, Evans, Jason P., additional, Rosenzweig, Cynthia, additional, O’Neill, Brian C., additional, Patwardhan, Anand, additional, Warren, Rachel, additional, van Aalst, Maarten K., additional, and Hulbert, Margot, additional

Published
2020
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210. 3D-modelling of Lake Kivu: Horizontal and vertical flow and temperature structure under spatially variable atmospheric forcing

Author

Kranenburg, Wouter, primary, Tiessen, Meinard, additional, Veenstra, Jelmer, additional, de Graaff, Reimer, additional, Uittenbogaard, Rob, additional, Bouffard, Damien, additional, Sakindi, Gaetan, additional, Umutoni, Augusta, additional, Van de Walle, Jonas, additional, Thiery, Wim, additional, and van Lipzig, Nicole, additional

Published
2020
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213. Global climate response to idealized deforestation in CMIP6 models

Author

Boysen, Lena, primary, Brovkin, Victor, additional, Pongratz, Julia, additional, Lawrence, David, additional, Lawrence, Peter, additional, Vuichard, Nicolas, additional, Peylin, Philippe, additional, Liddicoat, Spencer, additional, Hajima, Tomohiro, additional, Zhang, Yanwu, additional, Rocher, Matthias, additional, Delire, Christine, additional, Séférian, Roland, additional, Arora, Vivek K., additional, Nieradzik, Lars, additional, Anthoni, Peter, additional, Thiery, Wim, additional, Laguë, Marysa, additional, Lawrence, Deborah, additional, and Lo, Min-Hui, additional

Published
2020
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214. Supplementary material to "Global climate response to idealized deforestation in CMIP6 models"

Author

Boysen, Lena, primary, Brovkin, Victor, additional, Pongratz, Julia, additional, Lawrence, David, additional, Lawrence, Peter, additional, Vuichard, Nicolas, additional, Peylin, Philippe, additional, Liddicoat, Spencer, additional, Hajima, Tomohiro, additional, Zhang, Yanwu, additional, Rocher, Matthias, additional, Delire, Christine, additional, Séférian, Roland, additional, Arora, Vivek K., additional, Nieradzik, Lars, additional, Anthoni, Peter, additional, Thiery, Wim, additional, Laguë, Marysa, additional, Lawrence, Deborah, additional, and Lo, Min-Hui, additional

Published
2020
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216. A typology of compound weather and climate events

Author

Zscheischler, Jakob, primary, Martius, Olivia, additional, Westra, Seth, additional, Bevacqua, Emanuele, additional, Raymond, Colin, additional, Horton, Radley M., additional, van den Hurk, Bart, additional, AghaKouchak, Amir, additional, Jézéquel, Aglaé, additional, Mahecha, Miguel D., additional, Maraun, Douglas, additional, Ramos, Alexandre M., additional, Ridder, Nina N., additional, Thiery, Wim, additional, and Vignotto, Edoardo, additional

Published
2020
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217. Supplementary material to "Uncertainty of simulated groundwater recharge at different global warming levels: A global-scale multi-model ensemble study"

Author

Reinecke, Robert, primary, Müller Schmied, Hannes, additional, Trautmann, Tim, additional, Burek, Peter, additional, Flörke, Martina, additional, Gosling, Simon N., additional, Grillakis, Manolis, additional, Hanasaki, Naota, additional, Koutroulis, Aristeidis, additional, Pokhrel, Yadu, additional, Seaby, Lauren, additional, Thiery, Wim, additional, Wada, Yoshihide, additional, Yusuke, Satoh, additional, and Döll, Petra, additional

Published
2020
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218. Uncertainty of simulated groundwater recharge at different global warming levels: A global-scale multi-model ensemble study

Author

Reinecke, Robert, primary, Müller Schmied, Hannes, additional, Trautmann, Tim, additional, Burek, Peter, additional, Flörke, Martina, additional, Gosling, Simon N., additional, Grillakis, Manolis, additional, Hanasaki, Naota, additional, Koutroulis, Aristeidis, additional, Pokhrel, Yadu, additional, Seaby, Lauren, additional, Thiery, Wim, additional, Wada, Yoshihide, additional, Yusuke, Satoh, additional, and Döll, Petra, additional

Published
2020
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219. Smart renewable electricity portfolios in West Africa

Author

Sterl, Sebastian, primary, Vanderkelen, Inne, additional, Chawanda, Celray James, additional, Russo, Daniel, additional, Brecha, Robert J., additional, van Griensven, Ann, additional, van Lipzig, Nicole P. M., additional, and Thiery, Wim, additional

Published
2020
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220. Biogeochemical effects of land cover and land management

Author

Guo, Suqi, primary, Pongratz, Julia, additional, Havermann, Felix, additional, Alessandri, Andrea, additional, Coumou, Dim, additional, Davin, Edouard L, additional, Hertog, Steven De, additional, Lejeune, Quentin, additional, Manola, Iris, additional, Menke, Inga, additional, Schleussner, Carl, additional, Seneviratne, Sonia I, additional, and Thiery, Wim, additional

Published
2020
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221. Similarities and differences among fifteen global water models in simulating the vertical water balance

Author

Telteu, Camelia-Eliza, primary, Müller Schmied, Hannes, additional, Thiery, Wim, additional, Leng, Guoyong, additional, Burek, Peter, additional, Liu, Xingcai, additional, Boulange, Julien Eric Stanislas, additional, Seaby, Lauren Paige, additional, Grillakis, Manolis, additional, Satoh, Yusuke, additional, Rakovec, Oldrich, additional, Stacke, Tobias, additional, Chang, Jinfeng, additional, Wanders, Niko, additional, Tao, Fulu, additional, Zhai, Ran, additional, Shah, Harsh Lovekumar, additional, Trautmann, Tim, additional, Mao, Ganquan, additional, Koutroulis, Aristeidis, additional, Pokhrel, Yadu, additional, Samaniego, Luis, additional, Wada, Yoshihide, additional, Mishra, Vimal, additional, Liu, Junguo, additional, Newland Gosling, Simon, additional, Schewe, Jacob, additional, and Zhao, Fang, additional

Published
2020
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224. Local biogeophysical effects of deforestation

Author

De Hertog, Steven, primary, Vanderkelen, Inne, additional, Havermann, Felix, additional, Guo, Suqi, additional, Pongratz, Julia, additional, Manola, Iris, additional, Coumou, Dim, additional, Davin, Edouard, additional, Seneviratne, Sonia, additional, Lejeune, Quentin, additional, Menke, Inga, additional, Schleussner, Carl, additional, and Thiery, Wim, additional

Published
2020
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225. Impacts of global re-/afforestation and deforestation on large scale atmospheric circulation

Author

Manola, Iris, primary, Coumou, Dim, additional, Alessandri, Andrea, additional, Davin, Edouard, additional, Guo, Suqi, additional, Havermann, Felix, additional, De Hertog, Steven, additional, Lejeune, Quentin, additional, Menke, Inga, additional, Pongratz, Julia, additional, Schleussner, Carl, additional, Seneviratne, Sonia, additional, and Thiery, Wim, additional

Published
2020
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227. Global heat uptake by inland waters

Author

Vanderkelen, Inne, primary, van Lipzig, Nicole P.M., additional, Lawrence, Dave, additional, Droppers, Bram, additional, Golub, Malgorzata, additional, Gosling, Simon N., additional, Janssen, Annette B. G., additional, Marcé, Rafael, additional, Müller Schmied, Hannes, additional, Perroud, Martorie, additional, Pierson, Don, additional, Pokhrel, Yadu, additional, Satoh, Yusuke, additional, Schewe, Jacob, additional, Seneviratne, Sonia I., additional, Stepanenko, Victor M., additional, Woolway, Richard I., additional, and Thiery, Wim, additional

Published
2020
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228. Pronounced and unavoidable impacts of low-end global warming on northern high-latitude land ecosystems

Author

Ito, Akihiko, primary, Reyer, Christopher P O, additional, Gädeke, Anne, additional, Ciais, Philippe, additional, Chang, Jinfeng, additional, Chen, Min, additional, François, Louis, additional, Forrest, Matthew, additional, Hickler, Thomas, additional, Ostberg, Sebastian, additional, Shi, Hao, additional, Thiery, Wim, additional, and Tian, Hanqin, additional

Published
2020
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230. Climate Extremes in the Lake Victoria Basin: The ELVIC CORDEX Flagship Pilot Study

Author

van Lipzig, Nicole, primary, Van de Walle, Jonas, additional, Thiery, Wim, additional, Nikulin, Grigory, additional, Wu, Minchao, additional, Glazer, Russell, additional, Coppola, Erika, additional, Pinto, Joaquim, additional, Fink, Andreas, additional, Ludwig, Patrick, additional, Rowell, Dave, additional, Berthou, Ségolène, additional, Finney, Declan, additional, and Marsham, John, additional

Published
2020
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231. Storm impacts on phytoplankton community dynamics in lakes

Author

Stockwell, Jason D., primary, Doubek, Jonathan P., additional, Adrian, Rita, additional, Anneville, Orlane, additional, Carey, Cayelan C., additional, Carvalho, Laurence, additional, De Senerpont Domis, Lisette N., additional, Dur, Gaël, additional, Frassl, Marieke A., additional, Grossart, Hans‐Peter, additional, Ibelings, Bas W., additional, Lajeunesse, Marc J., additional, Lewandowska, Aleksandra M., additional, Llames, María E., additional, Matsuzaki, Shin‐Ichiro S., additional, Nodine, Emily R., additional, Nõges, Peeter, additional, Patil, Vijay P., additional, Pomati, Francesco, additional, Rinke, Karsten, additional, Rudstam, Lars G., additional, Rusak, James A., additional, Salmaso, Nico, additional, Seltmann, Christian T., additional, Straile, Dietmar, additional, Thackeray, Stephen J., additional, Thiery, Wim, additional, Urrutia‐Cordero, Pablo, additional, Venail, Patrick, additional, Verburg, Piet, additional, Woolway, R. Iestyn, additional, Zohary, Tamar, additional, Andersen, Mikkel R., additional, Bhattacharya, Ruchi, additional, Hejzlar, Josef, additional, Janatian, Nasime, additional, Kpodonu, Alfred T. N. K., additional, Williamson, Tanner J., additional, and Wilson, Harriet L., additional

Published
2020
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232. Multimodel simulation of vertical gas transfer in a temperate lake

Author

Guseva, Sofya, primary, Bleninger, Tobias, additional, Jöhnk, Klaus, additional, Polli, Bruna Arcie, additional, Tan, Zeli, additional, Thiery, Wim, additional, Zhuang, Qianlai, additional, Rusak, James Anthony, additional, Yao, Huaxia, additional, Lorke, Andreas, additional, and Stepanenko, Victor, additional

Published
2020
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234. Warming of hot extremes alleviated by expanding irrigation

Author

Thiery, Wim, primary, Visser, Auke J., additional, Fischer, Erich M., additional, Hauser, Mathias, additional, Hirsch, Annette L., additional, Lawrence, David M., additional, Lejeune, Quentin, additional, Davin, Edouard L., additional, and Seneviratne, Sonia I., additional

Published
2020
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236. Potential of global land water recycling to mitigate local temperature extremes

Author

Hauser, Mathias, Thiery, Wim, and Seneviratne, Sonia I.

Abstract

Soil moisture is projected to decrease in many regions in the 21st century, exacerbating local temperature extremes. Here, we use sensitivity experiments to assess the potential of keeping soil moisture conditions at historical levels in the 21st century by “recycling” local water sources (runoff and a reservoir). To this end, we develop a “land water recycling” (LWR) scheme which applies locally available water to the soil if soil moisture drops below a predefined threshold (a historical climatology), and we assess its influence on the hydrology and extreme temperature indices. We run ensemble simulations with the Community Earth System Model for the 21st century and show that our LWR scheme is able to drastically reduce the land area with decreasing soil moisture. Precipitation responds to LWR with increases in mid-latitudes, but decreases in monsoon regions. While effects on global temperature are minimal, there are very substantial regional impacts on climate. Higher evapotranspiration and cloud cover in the simulations both contribute to a decrease in hot temperature extremes. These decreases reach up to about −1 ∘C regionally, and are of similar magnitude to the regional climate changes induced by a 0.5∘C difference in the global mean temperature, e.g. between 1.5 and 2∘C global warming. ISSN:2190-4987 ISSN:2190-4979

Published
2019

237. Towards more predictive and interdisciplinary climate change ecosystem experiments

Author

Rineau, Francois, Malina, Robert, Beenaerts, Natalie, Arnauts, Natascha, Bardgett, Richard D., Berg, Matty P., Boerema, Annelies, Bruckers, Liesbeth, Clerinx, Jan, Davin, Edouard L., De Boeck, Hans J., De Dobbelaer, Tom, Dondini, Marta, De Laender, Frederik, Ellers, Jacintha, Franken, Oscar, Gilbert, Lucy, Gudmundsson, Lukas, Janssens, Ivan A., Johnson, David, Lizin, Sebastien, Longdoz, Bernard, Meire, Patrick, Meremans, Dominique, Milbau, Ann, Moretti, Michele, Nijs, Ivan, Nobel, Anne, Pop, Iuliu Sorin, Puetz, Thomas, Reyns, Wouter, Roy, Jacques, Schuetz, Jochen, Seneviratne, Sonia I., Smith, Pete, Solmi, Francesca, Staes, Jan, Thiery, Wim, Thijs, Sofie, Vanderkelen, Inne, Van Landuyt, Wouter, Verbruggen, Erik, Witters, Nele, Zscheischler, Jakob, Vangronsveld, Jaco, Rineau, Francois, Malina, Robert, Beenaerts, Natalie, Arnauts, Natascha, Bardgett, Richard D., Berg, Matty P., Boerema, Annelies, Bruckers, Liesbeth, Clerinx, Jan, Davin, Edouard L., De Boeck, Hans J., De Dobbelaer, Tom, Dondini, Marta, De Laender, Frederik, Ellers, Jacintha, Franken, Oscar, Gilbert, Lucy, Gudmundsson, Lukas, Janssens, Ivan A., Johnson, David, Lizin, Sebastien, Longdoz, Bernard, Meire, Patrick, Meremans, Dominique, Milbau, Ann, Moretti, Michele, Nijs, Ivan, Nobel, Anne, Pop, Iuliu Sorin, Puetz, Thomas, Reyns, Wouter, Roy, Jacques, Schuetz, Jochen, Seneviratne, Sonia I., Smith, Pete, Solmi, Francesca, Staes, Jan, Thiery, Wim, Thijs, Sofie, Vanderkelen, Inne, Van Landuyt, Wouter, Verbruggen, Erik, Witters, Nele, Zscheischler, Jakob, and Vangronsveld, Jaco

Abstract

Despite great advances, experiments concerning the response of ecosystems to climate change still face considerable challenges, including the high complexity of climate change in terms of environmental variables, constraints in the number and amplitude of climate treatment levels, and the limited scope of responses and interactions covered. Drawing on the expertise of researchers from a variety of disciplines, this Perspective outlines how computational and technological advances can help in designing experiments that can contribute to overcoming these challenges, and also outlines a first application of such an experimental design.

Published
2019
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238. Reduced winter off-road tundra travel under climate change

Author

Gaedeke, Anne, Langer, Moritz, Boike, Julia, Burke, Eleanor, Chang, Jinfeng, Ostberg, Sebastian, Thiery, Wim, Thonicke, Kirsten, Gaedeke, Anne, Langer, Moritz, Boike, Julia, Burke, Eleanor, Chang, Jinfeng, Ostberg, Sebastian, Thiery, Wim, and Thonicke, Kirsten

Abstract

During the last decade the Arctic has experienced increasing human development while many native communities continue to live a subsistence lifestyle. Off-road winter tundra travel for resource exploration is most cost effective and least environmentally damaging during winter when the tundra is frozen and snow covered. Climate warming, which is occurring at an amplified rate in the Arctic, likely changes the period when access to the off-road tundra travel is possible. There currently exists, however, large uncertainty as to how climate change will impact the low-cost winter travel access across the tundra. Here we defined safe tundra access when soil temperatures are below a soil type dependent freezing temperature and snow cover is at least 20 cm. Our analysis is based on the simulated soil temperatures and snow depths of Land Surface Models (LSMs) contributing to “The Inter-Sectoral Impact Model Intercomparison Project” (ISIMIP). ISIMIP simulations are based on a common protocol, the same input data, the same spatial (0.5°) and temporal resolution (daily modeling output), and span over the period 1861-2100. The LSMs are forced by four different bias-corrected global circulation models (IPSL-CM5A-LR, GFDL-ESM2M, MIROC5, HadGEM2-ES) and three different future conditions (represented via representative concentration pathways (RCP) 2.6, 6.0, 8.5). The simulation results of our model ensemble (60 model combinations) show consistent permafrost warming and changing snow cover patterns at 60°N. Annual off-road tundra travel is considerably reduced (>50%) under future climate change scenarios, especially under the RCP8.5. The main reduction can be observed in the spring and autumn (>30%). The results of the multi-model ensemble differ in magnitude, however, their overall trend is consistent. Our results suggest a high vulnerability and substantial changes to the (subsistence) livelihoods of native communities and increasing costs for off-road resource exploration.

Published
2019

239. Can local fieldwork help to represent intra-urban variability of canopy parameters relevant for tropical African climate studies?

Author

Van de Walle, Jonas, Brousse, Oscar, Arnalsteen, Lien, Byarugaba, Disan, Ddumba, Daniel S., Demuzere, Matthias, Lwasa, Shuaib, Nsangi, Gloria, Sseviiri, Hakimu, Thiery, Wim, Vanhaeren, Roxanne, Wouters, Hendrik, and P.M. van Lipzig, Nicole

Subjects
TROPICAL climate, URBAN climatology, AFRICANA studies, ATMOSPHERIC models, ROOFING materials, BUILT environment
Abstract

Rapid and uncontrolled urbanization in tropical Africa is increasingly leading to unprecedented socio-economical and environmental challenges in cities, particularly urban heat and climate change. The latter calls for a better representation of tropical African cities' properties relevant for urban climate studies. Here, we demonstrate the possibility of collecting urban canopy parameters during a field campaign in the boreal summer months of 2018 for deriving a Local Climate Zone (LCZ) map and for improving the physical representation of climate-relevant urban morphological, thermal and radiative characteristics. The comparison of the resulting field-derived LCZ map with an existing map obtained from the World Urban Data and Access Portal Tool framework shows large differences. In particular, our map results in more vegetated open low-rise classes. In addition, site-specific fieldwork-derived urban characteristics are compared against the LCZ universal parameters. The latter shows that our fieldwork adds important information to the universal parameters by more specifically considering the presence of corrugated metal in the city of Kampala. This material is a typical roofing material found in densely built environments and informal settlements. It leads to lower thermal emissivity but higher thermal conductivity and capacity of buildings. To illustrate the importance of site-specific urban parameters, the newly derived site-specific urban characteristics are used as input fields to an urban parametrization scheme embedded in the regional climate model COSMO-CLM. This implementations decreases the surface temperature bias from 5.34 to 3.97 K. Based on our results, we recommend future research on tropical African cities to focus on a detailed representation of cities, with particular attention to impervious surface fraction and building materials. [ABSTRACT FROM AUTHOR]

Published
2021
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241. Modelled biophysical impacts of conservation agriculture on local climates

Author

Hirsch, Annette L., Prestele, Reinhard, Davin, Edouard Léopold, Seneviratne, Sonia I., Thiery, Wim, and Verburg, Peter H.

Subjects
CESM, climate‐effective land management, CLM, land‐based mitigation, subgrid‐scale influences, temperature extremes, tillage
Abstract

Including the parameterization of land management practices into Earth System Models has been shown to influence the simulation of regional climates, particularly for temperature extremes. However, recent model development has focused on implementing irrigation where other land management practices such as conservation agriculture (CA) has been limited due to the lack of global spatially explicit datasets describing where this form of management is practiced. Here, we implement a representation of CA into the Community Earth System Model and show that the quality of simulated surface energy fluxes improves when including more information on how agricultural land is managed. We also compare the climate response at the subgrid scale where CA is applied. We find that CA generally contributes to local cooling (~1°C) of hot temperature extremes in mid‐latitude regions where it is practiced, while over tropical locations CA contributes to local warming (~1°C) due to changes in evapotranspiration dominating the effects of enhanced surface albedo. In particular, changes in the partitioning of evapotranspiration between soil evaporation and transpiration are critical for the sign of the temperature change: a cooling occurs only when the soil moisture retention and associated enhanced transpiration is sufficient to offset the warming from reduced soil evaporation. Finally, we examine the climate change mitigation potential of CA by comparing a simulation with present‐day CA extent to a simulation where CA is expanded to all suitable crop areas. Here, our results indicate that while the local temperature response to CA is considerable cooling (>2°C), the grid‐scale changes in climate are counteractive due to negative atmospheric feedbacks. Overall, our results underline that CA has a nonnegligible impact on the local climate and that it should therefore be considered in future climate projections. ISSN:1354-1013 ISSN:1365-2486

Published
2018

242. Evaluating and improving the Community Land Model’s sensitivity to land cover

Author

Meier, Ronny, Davin, Edouard Léopold, Lejeune, Quentin, Hauser, Mathias, Li, Yan, Martens, Brecht, Schultz, Natalie M., Sterling, Shannon, and Thiery, Wim

Abstract

Modeling studies have shown the importance of biogeophysical effects of deforestation on local climate conditions but have also highlighted the lack of agreement across different models. Recently, remote-sensing observations have been used to assess the contrast in albedo, evapotranspiration (ET), and land surface temperature (LST) between forest and nearby open land on a global scale. These observations provide an unprecedented opportunity to evaluate the ability of land surface models to simulate the biogeophysical effects of forests. Here, we evaluate the representation of the difference of forest minus open land (i.e., grassland and cropland) in albedo, ET, and LST in the Community Land Model version 4.5 (CLM4.5) using various remote-sensing and in situ data sources. To extract the local sensitivity to land cover, we analyze plant functional type level output from global CLM4.5 simulations, using a model configuration that attributes a separate soil column to each plant functional type. Using the separated soil column configuration, CLM4.5 is able to realistically reproduce the biogeophysical contrast between forest and open land in terms of albedo, daily mean LST, and daily maximum LST, while the effect on daily minimum LST is not well captured by the model. Furthermore, we identify that the ET contrast between forests and open land is underestimated in CLM4.5 compared to observation-based products and even reversed in sign for some regions, even when considering uncertainties in these products. We then show that these biases can be partly alleviated by modifying several model parameters, such as the root distribution, the formulation of plant water uptake, the light limitation of photosynthesis, and the maximum rate of carboxylation. Furthermore, the ET contrast between forest and open land needs to be better constrained by observations to foster convergence amongst different land surface models on the biogeophysical effects of forests. Overall, this study demonstrates the potential of comparing subgrid model output to local observations to improve current land surface models' ability to simulate land cover change effects, which is a promising approach to reduce uncertainties in future assessments of land use impacts on climate., Biogeosciences, 15 (15), ISSN:1726-4170

Published
2018

243. Crop productivity changes in 1.5 degrees C and 2 degrees C worlds under climate sensitivity uncertainty

Author

Schleussner, Carl-Friedrich, Deryng, Delphine, Mueller, Christoph, Elliott, Joshua, Saeed, Fahad, Folberth, Christian, Liu, Wenfeng, Wang, Xuhui, Pugh, Thomas AM, Thiery, Wim, Seneviratne, Sonia I, and Rogelj, Joeri

Subjects
IMPACTS, GGCMI, Science & Technology, HAPPI, Environmental Sciences & Ecology, Physical Sciences, Meteorology & Atmospheric Sciences, 1.5 degrees C, ELEVATED CO2, Life Sciences & Biomedicine, TEMPERATURE, Environmental Sciences, METAANALYSIS
Abstract

© 2018 The Author(s). Published by IOP Publishing Ltd. Following the adoption of the Paris Agreement, there has been an increasing interest in quantifying impacts at discrete levels of global mean temperature (GMT) increase such as 1.5 °C and 2 °C above pre-industrial levels. Consequences of anthropogenic greenhouse gas emissions on agricultural productivity have direct and immediate relevance for human societies. Future crop yields will be affected by anthropogenic climate change as well as direct effects of emissions such as CO 2 fertilization. At the same time, the climate sensitivity to future emissions is uncertain. Here we investigate the sensitivity of future crop yield projections with a set of global gridded crop models for four major staple crops at 1.5 °C and 2 °C warming above pre-industrial levels, as well as at different CO 2 levels determined by similar probabilities to lead to 1.5 °C and 2 °C, using climate forcing data from the Half a degree Additional warming, Prognosis and Projected Impacts project. For the same CO 2 forcing, we find consistent negative effects of half a degree warming on productivity in most world regions. Increasing CO 2 concentrations consistent with these warming levels have potentially stronger but highly uncertain effects than 0.5 °C warming increments. Half a degree warming will also lead to more extreme low yields, in particular over tropical regions. Our results indicate that GMT change alone is insufficient to determine future impacts on crop productivity. ispartof: ENVIRONMENTAL RESEARCH LETTERS vol:13 issue:6 status: published

Published
2018

245. From climate change to weather conditions: linking ecotrons to an ecosystem measurement tower to better simulate the effect of climate change on ecosystem functioning

Author

Rineau, Francois, Beenaerts, Natalie, Janssens, Ivan, Clerinx, Jan, Steegen, Peter, Roland, Marilyn, Arriga, Nicola, Vanderkelen, Inne, Ceulemans, Reinhart, Thiery, Wim, Vangronsveld, Jaco, Gudmunsson, Lukas, Zscheischler, Jakob, Davin, Edouard, and Seneviratne, Sonia I.

Abstract

Ecotrons are large scale research infrastructures offering a compromise between high level of control and recording ecosystem processes at a relevant spatial scale. Since ecosystem functioning is strongly influenced by climatic variables, simulating weather conditions and stochasticity accurately is crucial to ensure that results are not disconnected from reality. Here, we describe how to use input from an ICOS ecosystem tower to simulate in real time weather conditions in an ecotron facility. The ecotrons are filled with lysimeters containing dry heathland ecosystem. The parameters are controlled are not only atmospheric (temperature, relative humidity, precipitation, CO2 concentration) but also belowground (temperature and water tension). We illustrate the accuracy at which our ecotron-ICOS tower design can reproduce these parameters. We also describe how we plan to alter the ICOS input for two climate-change experiments.

Published
2018

246. Towards more predictive and interdisciplinary climate change ecosystem experiments

Author

Rineau, Francois, primary, Malina, Robert, additional, Beenaerts, Natalie, additional, Arnauts, Natascha, additional, Bardgett, Richard D., additional, Berg, Matty P., additional, Boerema, Annelies, additional, Bruckers, Liesbeth, additional, Clerinx, Jan, additional, Davin, Edouard L., additional, De Boeck, Hans J., additional, De Dobbelaer, Tom, additional, Dondini, Marta, additional, De Laender, Frederik, additional, Ellers, Jacintha, additional, Franken, Oscar, additional, Gilbert, Lucy, additional, Gudmundsson, Lukas, additional, Janssens, Ivan A., additional, Johnson, David, additional, Lizin, Sebastien, additional, Longdoz, Bernard, additional, Meire, Patrick, additional, Meremans, Dominique, additional, Milbau, Ann, additional, Moretti, Michele, additional, Nijs, Ivan, additional, Nobel, Anne, additional, Pop, Iuliu Sorin, additional, Puetz, Thomas, additional, Reyns, Wouter, additional, Roy, Jacques, additional, Schuetz, Jochen, additional, Seneviratne, Sonia I., additional, Smith, Pete, additional, Solmi, Francesca, additional, Staes, Jan, additional, Thiery, Wim, additional, Thijs, Sofie, additional, Vanderkelen, Inne, additional, Van Landuyt, Wouter, additional, Verbruggen, Erik, additional, Witters, Nele, additional, Zscheischler, Jakob, additional, and Vangronsveld, Jaco, additional

Published
2019
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249. Multimodel simulation of vertical gas transfer in a temperate lake

Author

Guseva, Sofya, primary, Bleninger, Tobias, additional, Jöhnk, Klaus, additional, Arcie Polli, Bruna, additional, Tan, Zeli, additional, Thiery, Wim, additional, Zhuang, Qianlai, additional, Rusak, James Anthony, additional, Yao, Huaxia, additional, Lorke, Andreas, additional, and Stepanenko, Victor, additional

Published
2019
Full Text
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