Reply to: Limitations of reanalyses for detecting tropical cyclone trends
Reply to: Limitations of reanalyses for detecting tropical cyclone trends
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回复：重新分析检测热带气旋趋势的局限性
DOI：
10.1038/s41558-023-01880-5
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发表时间：
2024
影响因子：
30.7
通讯作者：
Bell, Samuel S.
中科院分区：
文献类型：
--
作者：
Chand, Savin S.;Walsh, Kevin J.;Camargo, Suzana J.;Kossin, James P.;Tory, Kevin J.;Wehner, Michael F.;Chan, Johnny C.;Klotzbach, Philip J.;Dowdy, Andrew J.;Bell, Samuel S.
Chand等人。1表明，二十世纪再分析(20CR)数据集中的热带气旋(TC)频率在二十世纪期间在全球和区域范围内有所下降。伊曼纽尔2号表示，下降是人为的，是由于在这段时间内观测到的地面气压越来越多造成的。伊曼纽尔基于对一个测量对流层低层流曲率的参数(850-Okubo-Weiss-Zeta(OWZ))的频率分析，该参数适用于不同但相似的数据集。虽然我们同意这一分析对于热带气旋前兆扰动可能是合理的，但它对于热带气旋来说是无效的，原因如下：
Chand et al. 1 demonstrated that tropical cyclone (TC) frequency in the Twentieth Century Reanalysis (20CR) dataset has declined globally and regionally during the twentieth century. Emanuel 2 has suggested that the decline is artificial, caused by increasing numbers of surface-pressure observations during this time. Emanuel based this conclusion on a frequency analysis of a parameter that measures flow curvature in the lower troposphere (850-Okubo–Weiss–Zeta (OWZ)) applied to a different, but similar dataset. While we agree this analysis might be sound for TC precursor disturbances, it is not valid for TCs for the following reasons:
重新分析检测热带气旋趋势的局限性
影响因子：
30.7
作者：
Kerry Emanuel
通讯作者：
Kerry Emanuel