Diagnostic Study of an Extreme Explosive Cyclone over the Kuroshio/Kuroshio Extension Region  

作　　者：ZHANG Shuqin LIAO Qinghua LIU Chunlei GAO Xiaoyu LONG Jingchao LI Pengyuan XU Jianjun 

机构地区：[1]College of Ocean and Meteorology,Guangdong Ocean University,Zhanjiang 524088,China [2]South China Sea Institute of Marine Meteorology,Guangdong Ocean University,Zhanjiang 524088,China [3]CMA-GDOU Joint Laboratory for Marine Meteorology,Guangdong Ocean University,Zhanjiang 524088,China [4]Key Laboratory of Climate,Resources and Environment in Continental Shelf Sea and Deep Sea of Department of Education of Guangdong Province,Guangdong Ocean University,Zhanjiang 524088,China [5]State Key Laboratory of Severe Weather,Chinese Academy of Meteorological Sciences,Beijing 100081,China [6]Department of Marine Meteorology,Ocean-Atmosphere Interaction and Climate Laboratory,Key Laboratory of Physical Oceanography,Ocean University of China,Qingdao 266100,China

出　　处：《Journal of Ocean University of China》2024年第3期605-617,共13页中国海洋大学学报（英文版）

基　　金：jointly funded by the State Key Program of the National Natural Science Foundation of China(No.42130605);the Major Program of the National Natural Science Foundation of China(No.72293604);the Youth Innovative Talents Program of Guangdong Colleges and Universities(No.2022KQNCX026);the Natural Science Foundation of Shandong(No.ZR2022MD038);the Project of Enhancing School with Innovation of Guangdong Ocean University(No.230419106);the State Key Program of the National Natural Science Foundation of China(No.42130605);the National Natural Science Foundation of China(Nos.42275001,42276019,42205014,and 42275017);the Guangdong Ocean University Ph.D.Scientific Research Program(No.R19045).

摘　　要：Explosive cyclones(ECs)occur frequently over the Kuroshio/Kuroshio Extension region.The most rapidly intensified EC over the Kuroshio/Kuroshio Extension region during the 42 years(1979-2020)of cold seasons(October-April)was studied to reveal the variations of the key factors at different explosive-developing stages.This EC had weak low-level baroclinicity,mid-level cyclonic-vorticity advection,and strong low-level water vapor convergence at the initial explosive-developing stage.The low-level baroclinicity and mid-level cyclonic-vorticity advection increased substantially during the maximum-deepening-rate stage.The diagnostic analyses using the Zwack-Okossi equation showed that diabatic heating was the main contributor to the initial rapid intensification of this EC.The cyclonic-vorticity advection and warm-air advection enhanced rapidly in the middle and upper troposphere and contributed to the maximum rapid intensification,whereas the diabatic heating weakened slightly in the mid-low troposphere.The relative contribution of the diabatic heating decreased from the initial explosive-developing stage to the maximum-deepening-rate stage due to the enhancement of other factors(the cyclonic-vorticity advection and warm-air advection).Furthermore,the physical factors contributing to this EC varied with the explosive-developing stage.The non-key factors at the initial explosive-developing stage need attention to forecast the rapid intensification.

关 键 词：explosive cyclone diabatic heating cyclonic-vorticity advection rapid intensification the Kuroshio/Kuroshio Extension region 

分 类 号：P731.27[天文地球—海洋科学] P732.3