海洋预报2017，Vol.34Issue(4)：32-41,10.DOI:10.11737/j.issn.1003-0239.2017.04.004
1522号强台风“彩虹”近海急剧增强特征及机理分析
The features and mechanism analysis on rapid intensity change of NO.1522 typhoon "Mujigae" over the offshore of China
摘要
Abstract
Most tropical cyclones weaken or their intensity remains unchanged over the offshore of China,while some tropical cyclones intensify rapidly.Based on the FNL reanalysis data from NCEP,the characteristics and mechanisms of a significant enhancement in the coastal waters of the strong typhoon Mujigae are analyzed.The results show that the rapid intensify of Mujigae has a close relation with the large scale atmospheric circulation.During the rapid intensification stage,the South Asia high changes from western pattem to eastern pattern with a strong anticyclone center over the center of the typhoon in the eastem China coastal waters,which is in favor of the enhancement of the divergence at upper level.The enhanced vapor transport is also helpful to the westward and northward extension of the subtropical high.The critical vertical shear between 850 and 200 hPa with magnitude of-4～4 m/s is an essential condition of typhoon rapid intensification over the offshore of China.There appears to be a time lag between the change of low level (850～ 1000 hPa) vertical wind shear and the typhoon intensity rapid change.The sharp intensify of the Mujigae is accompanied with the warm core of the typhoon strengthened rapidly.The warm core maintains a better structure which could be an important factor to maintain its strength.关键词
台风个例/近海/急剧增强Key words
typhoon case/offshore/rapid intensify分类
天文与地球科学引用本文复制引用
刘凯,宋晓姜,王彰贵,郝赛..1522号强台风“彩虹”近海急剧增强特征及机理分析[J].海洋预报,2017,34(4):32-41,10.基金项目
国家自然科学基金青年基金(41606032). （41606032）
