文献类型：期刊文献

英文题名：Statistical Characteristics and Composite Environmental Conditions of Explosive Cyclones over the Japan Sea and Kuroshio/Kuroshio Extension

作者：Zhang, Shuqin[1,2,3,4];Fu, Gang[5];Zhang, Yu[1,2,3,4];Xu, Jianjun[1,2];Xue, Yufeng[1,2,3,4];Tang, Ruoying[6];Gao, Xiaoyu[7];Liu, Chunlei[1,2];Long, Jingchao[1,2,3,4]

机构：[1]CMA GDOU Joint Lab Marine Meteorol, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, South China Sea Inst Marine Meteorol, Zhanjiang 524088, Peoples R China;[3]Guangdong Ocean Univ, Coll Ocean & Meteorol, Zhanjiang 524088, Peoples R China;[4]Guangdong Ocean Univ, Key Lab Climate Resources & Environm Continental, Dept Educ, Zhanjiang 524088, Peoples R China;[5]Ocean Univ China, Coll Ocean & Atmospher Sci, Qingdao 266100, Peoples R China;[6]Guangdong Ocean Univ, Coll Coastal Agr Sci, Zhanjiang 524088, Peoples R China;[7]Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing 100081, Peoples R China

年份：2022

卷号：13

期号：1

外文期刊名：ATMOSPHERE

收录：SCI-EXPANDED(收录号：WOS:000747260300001)、、EI(收录号：20215211395670)、Scopus(收录号：2-s2.0-85121682090)、WOS

语种：英文

外文关键词：explosive cyclone; statistical composite analysis; environmental condition; Japan Sea; Kuroshio; Kuroshio Extension

外文摘要：Statistical characteristics and composite synoptic-scale environmental conditions of explosive cyclones (ECs) over the Japan Sea and Kuroshio/Kuroshio Extension are examined and compared using ERA5 atmospheric reanalysis to give a better understanding of their differences. ECs over the Japan Sea frequently occur in late autumn and early winter and those over the Kuroshio/Kuroshio Extension mainly occur in winter and early spring. The maximum deepening rate, minimum central sea level pressure and explosive-developing lifetime of ECs over the Kuroshio/Kuroshio Extension are generally larger, lower and longer, respectively, than those over the Japan Sea. ECs over the Kuroshio/Kuroshio Extension formed over the East China Sea tend to develop more rapidly, and weak and moderate ECs generally begin to develop explosively over the sea to the east of the Japan Islands, while the strong and super ECs over the sea to the south of Japan Islands have longer explosive-developing tracks. Composite analysis shows that synoptic-scale environmental conditions favoring rapid EC development over these two regions are significantly different. ECs over the Japan Sea have stronger baroclinicity and cyclonic vorticity, but weaker water vapor convergence and upper-level jet stream than those over the Kuroshio/Kuroshio Extension. The key factor contributing to the baroclinicity is the cold air intrusion over the Japan Sea and the strong warm current heating over the Kuroshio/Kuroshio Extension. The potential vorticity shows anomalies in upper and low levels for both EC areas and extends further downwards over the Japan Sea.