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An analysis of tropical cyclones impacting the Southeast United States from a regional reanalysis

机译：从区域再分析分析热带气旋影响美国东南部

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摘要

Extreme events (low probability-high impact events) such as tropical cyclones can result in loss of life, substantial socio-economic impacts and disrupt the natural environment. Atmospheric reanalysis products provide a means for understanding these events and their impacts. This paper examines the near-surface winds and precipitation from 42 observed land-falling tropical cyclones between 1979 and 2000 in a new high-resolution (10 km) reanalysis for the Southeast United States. It is shown that the near-surface wind speeds in the tropical cyclones are underestimated by almost half compared to the observed best-track data. The regional reanalysis resolves the pattern of coastal precipitation associated with the tropical cyclones; however, the average storm maximum precipitation is too high resulting in large storm-related precipitation farther inland than observed. Possible reasons for the deficiencies are discussed.
机译：诸如热带气旋等极端事件（低概率-高影响事件）可能会导致生命损失，重大社会经济影响并破坏自然环境。大气再分析产品为了解这些事件及其影响提供了一种手段。本文在一项针对美国东南部的新高分辨率（10 km）重新分析中，研究了1979年至2000年之间42个观测到的登陆热带气旋的近地表风和降水。结果表明，与观测到的最佳跟踪数据相比，热带气旋的近地表风速被低估了近一半。区域重新分析解决了与热带气旋有关的沿海降水模式。但是，平均风暴最大降水过高，导致与风暴有关的大降水比内陆更远。讨论了缺陷的可能原因。

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