Amplified temperature sensitivity of extreme precipitation events following heat stress

This study investigates the global characteristics and temperature sensitivities of extreme precipitation events (EPEs), particularly those preceded by extreme heat stress (EPE-Hs), compared to those without (EPE-NHs). Using reanalysis and Earth System Model data, the findings reveal that EPE-Hs, though less frequent, have longer durations and greater magnitudes, especially in high latitudes. Future projections indicate a significant increase in EPE-Hs characteristics, contrasting with stable EPE-NHs. EPE-Hs show much higher temperature sensitivity, particularly in low latitudes. The precipitation-temperature scaling relationships differ significantly between EPE-Hs and EPE-NHs, with regional variations. These results are crucial for developing region-specific early warning and adaptation strategies for extreme precipitation under global warming.

Zhiling Zhou, Liping Zhang, Qin Zhang, Hui Cao, Hairong Zhang, Benjun Jia, Lina Liu, Zhenyu Tang, Jie Chen