文献类型：期刊文献

英文题名：Increase in tropical cyclone rain rate with translation speed

作者：Tu, Shifei[1,2,3];Chan, Johnny C. L.[4,5,6];Xu, Jianjun[1,3];Zhong, Quanjia[7];Zhou, Wen[4,8];Zhang, Yu[1,2]

机构：[1]Guangdong Ocean Univ, China Meteorol Adm Guangdong Ocean Univ CMA GDOU, Zhanjiang, Peoples R China;[2]Guangdong Ocean Univ, Coll Ocean & Meteorol, Zhanjiang, Peoples R China;[3]Guangdong Ocean Univ, Shenzhen Inst, Shenzhen, Peoples R China;[4]City Univ Hong Kong, Low Carbon & Climate Impact Res Ctr, Sch Energy & Environm, Hong Kong, Peoples R China;[5]China Meteorol Adm, Shanghai Typhoon Inst, Shanghai, Peoples R China;[6]Asia Pacific Typhoon Collaborat Res Ctr, Shanghai, Peoples R China;[7]Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing, Peoples R China;[8]Fudan Univ, Inst Atmospher Sci, Dept Atmospher & Ocean Sci, Shanghai, Peoples R China

年份：2022

卷号：13

期号：1

外文期刊名：NATURE COMMUNICATIONS

收录：SCI-EXPANDED(收录号：WOS:000889930500007)、、Scopus(收录号：2-s2.0-85142868501)、WOS

基金：This study was jointly supported by the National Natural Science Foundation of China (42130605), the Guangdong Basic and Applied Basic Science Research Foundation (2019B1515120018), Project of University Innovation Teams of Guangdong Province (060313452101), Shenzhen Science and Technology Program (JCYJ20210324131810029), the Research Grants Council of the Hong Kong Special Administrative Region of China Grant CityU11301417, and the National Natural Science Foundation of China (42105059). We thank Dr. Zhenchen Liu from the Department of Atmospheric and Oceanic Sciences, Institute of Atmospheric Sciences, Fudan University, for his helpful comments on this work.

语种：英文

外文摘要：Using satellite observations, the authors show that the average tropical cyclone (TC) rain rate increases significantly with translation speed. On average, the rain rate of a fast-moving TC is about 24% higher than that of a slow one. In general, tropical cyclone (TC) rainfall accumulation usually decreases with faster TC translation speed but increases with heavier rain rate. However, how the TC rain rate changes with translation speed is unclear. Here we show that, in all TC basins, the average TC rain rate significantly increases with translation speed. On average, the rain rate in a fast-moving TC is 24% higher than in a slow one. This difference increases with TC intensity, with category 3-5 TCs having a 42% increase while tropical depressions exhibit only a 9% increase. The increase in the average TC rain rate with translation speed is mainly caused by the TC net inflow in the lower troposphere, as well as vertical wind shear. These findings have important implications not only for a deeper understanding of rain rate changes in a translating TC but also for short-term forecasts of TC rainfall and disaster preparedness.