Impacts and countermeasures of compound extreme drought and heatwave events in 
the Yangtze River Basin in 2022

She, dunxian; Xia, Jun

doi:10.57757/IUGG23-2173

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Impacts and countermeasures of compound extreme drought and heatwave events in the Yangtze River Basin in 2022

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She, dunxian
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Xia, Jun
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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She, d., Xia, J. (2023): Impacts and countermeasures of compound extreme drought and heatwave events in the Yangtze River Basin in 2022, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-2173

Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018633

Abstract

Compound drought and heatwave (CDHW) events have received considerable attention in recent years due to their devastating effects on human society and ecosystem. Since July 2022, the Yangtze River Basin (YRB), China has been hit by CDHW events and has attracted widespread public attention. We investigated the causes and characteristics of the CDHW events in the YRB in 2022 based on a long series of historical data, and proposed the scientific drought resistance strategy and comprehensive countermeasures of extreme drought in the YRB. The extreme CDHW events in the YRB is influenced by both global climate change and intensified human activities. We also evaluated the spatiaotemporal changes of CDHW events in the YRB under four future scenarios (2020–2100) (SSP1-2.6, SSP2-4.5, SSP3-7.0, and SSP5-8.5) by using Coupled Model Intercomparison Project Phase 6 (CMIP6) models. The multi-model ensembles projected a significant increasing trend in CDHW characteristics over YRB under SSP2-4.5, SSP3-7.0, and SSP5-8.5. Therefore, we should pay more attention to the CDHW events risk assessment, adaptation and mitigation strategies under climate change to avoid the potential huge economic and ecological losses.