Warming of hot extremes alleviated by expanding irrigation
| Autor: | Edouard Davin, Mathias Hauser, Sonia I. Seneviratne, Wim Thiery, Annette L. Hirsch, Erich M. Fischer, Auke J. Visser, Quentin Lejeune, David M. Lawrence |
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| Přispěvatelé: | Hydrology and Hydraulic Engineering |
| Rok vydání: | 2020 |
| Předmět: |
IMPACTS
Meteorologie en Luchtkwaliteit Irrigation South asia 010504 meteorology & atmospheric sciences Meteorology and Air Quality LAND-COVER CHANGES Science 0208 environmental biotechnology General Physics and Astronomy 02 engineering and technology HEAT 01 natural sciences General Biochemistry Genetics and Molecular Biology VALIDATION Article Attribution SYSTEMS Life Science lcsh:Science Climate and Earth system modelling 0105 earth and related environmental sciences Multidisciplinary Science & Technology TEMPERATURE RESPONSE Global warming General Chemistry 15. Life on land Hot days 020801 environmental engineering Multidisciplinary Sciences CLIMATE MODEL 13. Climate action Human exposure Climatology PRECIPITATION Environmental science Science & Technology - Other Topics lcsh:Q Negative correlation Hydrology |
| Zdroj: | Nature Communications, Vol 11, Iss 1, Pp 1-7 (2020) Nature Communications Nature Communications, 11(1) Nature Communications, 11 (1) Nature Communications 11 (2020) 1 Thiery, Wim; Visser, Auke J.; Fischer, Erich M.; Hauser, Mathias; Hirsch, Annette L.; Lawrence, David M.; Lejeune, Quentin; Davin, Édouard L.; Seneviratne, Sonia I. (2020). Warming of hot extremes alleviated by expanding irrigation. Nature Communications, 11(1) Springer Nature 10.1038/s41467-019-14075-4 |
| ISSN: | 2041-1723 |
| DOI: | 10.48350/167115 |
| Popis: | Irrigation affects climate conditions – and especially hot extremes – in various regions across the globe. Yet how these climatic effects compare to other anthropogenic forcings is largely unknown. Here we provide observational and model evidence that expanding irrigation has dampened historical anthropogenic warming during hot days, with particularly strong effects over South Asia. We show that irrigation expansion can explain the negative correlation between global observed changes in daytime summer temperatures and present-day irrigation extent. While global warming increases the likelihood of hot extremes almost globally, irrigation can regionally cancel or even reverse the effects of all other forcings combined. Around one billion people (0.79–1.29) currently benefit from this dampened increase in hot extremes because irrigation massively expanded throughout the 20\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${}^{th}$$\end{document}th century. Our results therefore highlight that irrigation substantially reduced human exposure to warming of hot extremes but question whether this benefit will continue towards the future. How the effects of irrigation on the climate conditions compare to other anthropogenic forcings is not well known. Observational and model evidence show that expanding irrigation has dampened historical anthropogenic warming during hot days, an effect that is particularly strong over South Asia. |
| Databáze: | OpenAIRE |
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