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Decrease in the spatial inhomogeneity of tropical cyclone rainfall in China
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DOI：10.1088/1748-9326/ae293e.png)
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En 中文
The increasing impact of tropical cyclone (TC) rainfall underscores the need to understand regional variations in its spatial distribution. Using high-resolution satellite precipitation data from 1998–2023, this study investigates changes in the spatial inhomogeneity of TC rainfall across China. Results show that TC rainfall inhomogeneity decreases significantly by about 65%, indicating a reduced rainfall in historically high-TC-rainfall areas and an increase in low-TC-rainfall areas. Regionally, this decline is mainly governed by the intra‐regional component in East China, where opposing trends between high- and low-rainfall areas have substantially reduced spatial disparities. In contrast, North China shows a marked increase in TC rainfall, accompanied by increased intra‐regional but decreased inter‐regional inhomogeneity, largely offsetting each other. Other regions exhibit minor or insignificant contributions. These spatial reorganizations of TC rainfall in East and North China are closely linked to the northward migration of TC activity in recent decades, driven by reduced landfalling TCs over Taiwan and Fujian and increased inland penetration of TCs into East and North China. The findings reveal a restructuring of TC rainfall patterns and emphasize the growing regional contrasts in TC‐related hydroclimatic impacts, providing new insights for disaster risk assessments and regional climate adaptation strategies in China.
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Tropical cyclone-induced rainfall variability and its implications for drought in Taiwan: insights from 1981 to 2022热带气旋引发的降雨变率及其对台湾干旱的影响：1981年至2022年的研究洞察.png)
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