Abstract
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.
Original language | English |
---|---|
Article number | 1005 |
Journal | Nature Communications |
Volume | 10 |
Issue number | 1 |
DOIs | |
Publication status | Published - Dec 1 2019 |
Bibliographical note
Funding Information:The work was supported within the framework of the Leibniz Competition (SAW-2013-PIK-5), the EU FP7 project HELIX (grant no. FP7–603864–2), the FP7 project IMPACT2C (grant agreement#282746) and by the German Federal Ministry of Education and Research (BMBF, grant no. 01LS1201A1). H.K. acknowledges support by Grant-in-Aid for specially promoted research 16H06291 from JSPS. Guided access is provided via www.isimip.org. We thank the Global Runoff Data Centre (GRDC) for making available their river discharge data.
Publisher Copyright:
© 2019, The Author(s).
ASJC Scopus Subject Areas
- General Chemistry
- General Biochemistry,Genetics and Molecular Biology
- General Physics and Astronomy