Amplified temperature sensitivity of extreme precipitation events following heat stress

作者：Zhiling Zhou, Liping Zhang, Qin Zhang, Hui Cao, Hairong Zhang, Benjun Jia, Lina Liu, Zhenyu Tang, Jie Chen · 发表于：npj Climate and Atmospheric Science · 年份：2024 · DOI：10.1038/s41612-024-00796-x · 被引用次数：15 · 研究领域：Climate variability and models、Meteorological Phenomena and Simulations、Hydrology and Drought Analysis

This study investigates global extreme precipitation events (EPEs) during warm seasons, with a particular focus on EPEs preceded by extreme heat stress (EPE-Hs) and a comparative analysis with those not (EPE-NHs). Using reanalysis product and Earth System Model data, the spatiotemporal characteristics and temperature sensitivities of EPEs are analyzed. Results show that EPE-Hs, while less frequent, have longer duration and greater magnitude compared to EPE-NHs, particularly in high latitude regions. In the future, a significant increase is projected in the characteristics of EPE-Hs, in contrast to the stable duration and magnitude of EPE-NHs. EPE-Hs demonstrate substantially higher temperature sensitivity than EPE-NHs, especially in low latitudes. The precipitation-temperature scaling relationships diverge markedly between EPE-Hs and EPE-NHs, with notable regional variations. These insights are pivotal for crafting region-specific early warning and adaptation strategies to mitigate the risks associated with extreme precipitation under the backdrop of global warming.