Compound extreme hourly rainfall preconditioned by heatwaves most likely in the mid-latitudes
Compound extreme hourly rainfall preconditioned by heatwaves most likely in the mid-latitudes
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DOI：
10.1016/j.wace.2023.100563
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发表时间：
2023-04
影响因子：
8
通讯作者：
Christoph Sauter;H. Fowler;S. Westra;Haider Ali;N. Peleg;C. White
中科院分区：
文献类型：
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作者：
Christoph Sauter;H. Fowler;S. Westra;Haider Ali;N. Peleg;C. White
热浪和极端降雨的潜在复合行为对包括野火和洪水在内的一系列灾害具有重要影响，但人们对这些影响知之甚少。在这项全球研究中，我们分析了热浪之后立即出现1小时极端降雨的可能性，并确定了这种现象最明显的气候带。我们在中欧和日本发现了最强烈的复合热浪与极端降雨的关系，在那里，热浪之后极端降雨的可能性比气候增加了大约四倍。在温带或较冷的气候条件下，只要这些地区有充足的水分，就会发现显著的复合。由于热浪和极端降雨在未来都将变得更加频繁，我们的研究结果表明，热浪和极端降雨复合事件的潜在影响也可能显著增加。
The potential compounding behaviour of heatwaves and extreme rainfall have important implications for a range of hazards, including wildfires and flooding, yet remain poorly understood. In this global study, we analyse the likelihood of extreme 1-hr rainfall immediately following a heatwave, and identify climate zones where this phenomenon is most pronounced. We find the strongest compounding heatwave-extreme rainfall relationships in central Europe and Japan, where the likelihood of extreme rainfall after a heatwave is increased by approximately four times compared to climatology. Significant compounding is found mainly in temperate or colder climates, provided these areas receive ample moisture. As both heatwaves and extreme rainfall are expected to become more frequent in the future, our results indicate that the potential impacts from compounding heatwave-extreme rainfall events might significantly increase as well.