Investigating the Physical Drivers for the Increasing Tropical Cyclone Rainfall Hazard in the United States

Investigating the Physical Drivers for the Increasing Tropical Cyclone Rainfall Hazard in the United States
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调查美国热带气旋降雨危害日益严重的物理驱动因素

DOI:
10.1029/2022gl099196
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发表时间:
2022
影响因子:
5.2
通讯作者:
Lin, Ning
Lin, Ning
中科院分区:
地球科学1区
文献类型:
--
作者:
Xi, Dazhi;Lin, Ning

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在这项研究中,我们研究了气候变化下美国热带气旋(TC)降雨灾害的变化以及引起这种变化的因素的相对重要性。我们发现,在SSP5 8.5情景下,到本世纪末,美国海岸线百年一遇的TC降雨量可能增加320%。热带气旋增雨能力增加的影响比气旋频数增加对百年气旋降雨量增加的影响更显著(最高可达180%,而不是增加60%)。在暴雨能力增强的不同物理驱动因素中,TC强度的增加是主导因素,其次是TC持续时间和大气温度的变化。对于TC频率预测中的不确定性,预测的TC降雨灾害增加是稳健的。
In this study, we investigate both the changes of tropical cyclone (TC) rainfall hazard in the United States under climate change and the relative importance of the factors that cause the changes. We find that under the SSP5 8.5 scenario, the 100‐year TC rainfall level can increase by up to 320% along the U.S. coastline by the end of this century. The influence of TC rainfall‐producing ability increase is more significant than the influence of TC frequency increase on the increase of the 100‐year TC rainfall level (up to 180% vs. 60% increase). Among the different physical drivers for the increase in storm rainfall‐producing ability, the increase of TC intensity is the leading factor, followed by changes in TC duration and atmospheric temperature. The projected increase of TC rainfall hazard is robust against the uncertainty in the TC frequency projection.
DOI: 10.1007/s00382-015-2544-y
发表时间: 2015-03
期刊: Climate Dynamics
影响因子: 4.6
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