State-of-the-art global models underestimate impacts from climate extremes

Global impact models represent process-level understanding of how natural and human systems may be affected by climate change. Their projections are used in integrated assessments of climate change. Here we test, for the first time, systematically across many important systems, how well such impact models capture the impacts of extreme climate conditions. Using the 2003 European heat wave and drought as a historical analogue for comparable events in the future, we find that a majority of models underestimate the extremeness of impacts in important sectors such as agriculture, terrestrial ecosystems, and heat-related human mortality, while impacts on water resources and hydropower are overestimated in some river basins; and the spread across models is often large. This has important implications for economic assessments of climate change impacts that rely on these models. It also means that societal risks from future extreme events may be greater than previously thought.

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Author Schewe, Jacob
Gosling, Simon N.
Reyer, Christopher
Zhao, Fang
Ciais, Philippe
Elliott, Joshua
Francois, Louis
Huber, Veronika
Lotze, Heike K.
Seneviratne, Sonia I.
van Vliet, Michelle T. H.
Vautard, Robert
Wada, Yoshihide
Breuer, Lutz
Büchner, Matthias
Carozza, David A.
Chang, Jinfeng
Coll, Marta
Deryng, Delphine
de Wit, Allard
Eddy, Tyler D.
Folberth, Christian
Frieler, Katja
Friend, Andrew D.
Gerten, Dieter
Gudmundsson, Lukas
Hanasaki, Naota
Ito, Akihiko
Khabarov, Nikolay
Kim, Hyungjun
Lawrence, Peter
Morfopoulos, Catherine
Müller, Christoph
Müller Schmied, Hannes
Orth, René
Ostberg, Sebastian
Pokhrel, Yadu
Pugh, Thomas A. M.
Sakurai, Gen
Satoh, Yusuke
Schmid, Erwin
Stacke, Tobias
Steenbeek, Jeroen
Steinkamp, Jörg
Tang, Qiuhong
Tian, Hanqin
Tittensor, Derek P.
Volkholz, Jan
Wang, Xuhui
Warszawski, Lila
Publisher UCAR/NCAR - Library
Publication Date 2019-03-01T00:00:00
Digital Object Identifier (DOI) Not Assigned
Alternate Identifier N/A
Resource Version N/A
Topic Category geoscientificInformation
Progress N/A
Metadata Date 2023-08-18T19:18:03.287663
Metadata Record Identifier edu.ucar.opensky::articles:22361
Metadata Language eng; USA
Suggested Citation Schewe, Jacob, Gosling, Simon N., Reyer, Christopher, Zhao, Fang, Ciais, Philippe, Elliott, Joshua, Francois, Louis, Huber, Veronika, Lotze, Heike K., Seneviratne, Sonia I., van Vliet, Michelle T. H., Vautard, Robert, Wada, Yoshihide, Breuer, Lutz, Büchner, Matthias, Carozza, David A., Chang, Jinfeng, Coll, Marta, Deryng, Delphine, de Wit, Allard, Eddy, Tyler D., Folberth, Christian, Frieler, Katja, Friend, Andrew D., Gerten, Dieter, Gudmundsson, Lukas, Hanasaki, Naota, Ito, Akihiko, Khabarov, Nikolay, Kim, Hyungjun, Lawrence, Peter, Morfopoulos, Catherine, Müller, Christoph, Müller Schmied, Hannes, Orth, René, Ostberg, Sebastian, Pokhrel, Yadu, Pugh, Thomas A. M., Sakurai, Gen, Satoh, Yusuke, Schmid, Erwin, Stacke, Tobias, Steenbeek, Jeroen, Steinkamp, Jörg, Tang, Qiuhong, Tian, Hanqin, Tittensor, Derek P., Volkholz, Jan, Wang, Xuhui, Warszawski, Lila. (2019). State-of-the-art global models underestimate impacts from climate extremes. UCAR/NCAR - Library. http://n2t.net/ark:/85065/d7v98c4c. Accessed 01 July 2025.

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