A STUDY ON THE MECHANISM OF RAPID WEAKENING OF TYPHOON XANGSANE (0020) OVER THE EAST CHINA SEA  

作　　者：钱燕珍 张胜军 陈联寿 

机构地区：[1]Ningbo Meteorological Observatory, Hangzhou 315012 China [2]State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081 China

出　　处：《Journal of Tropical Meteorology》2016年第3期352-361,共10页热带气象学报（英文版）

基　　金：National Key Basic Research Program of China(2015CB452804);National Natural Science Foundation of China(41575063,41275066,41075037);Ningbo Science and Technology Project(2014C50024)

摘　　要：： Using the National Center for Environmental Prediction reanalysis data on 1.0°×l.0° grids and data from theTropical Cyclone yearbook （2000）, a diagnostic analysis and numerical simulation were performed to investigate the characteristics and mechanism underlying the rapid weakening of typhoon Xangsane. The results show that a sharp decline in the intensity of typhoon Xangsane resulted from its movement into the cool sea surface temperature area in the East China Sea, the intrusion of cold air from the mainland into the typhoon, and a rapid increase of the vertical wind shear in the surrounding environment. An important factor that led to the demise of the typhoon was a significant decrease in the moisture transport into the typhoon. Furthermore, the results of the numerical simulation and sensitivity experiments indicate that sea surface temperature largely modulated the rapid weakening of typhoon Xangsane.Using the National Center for Environmental Prediction reanalysis data on 1.0°×1.0° grids and data from the Tropical Cyclone yearbook(2000),a diagnostic analysis and numerical simulation were performed to investigate the characteristics and mechanism underlying the rapid weakening of typhoon Xangsane.The results show that a sharp decline in the intensity of typhoon Xangsane resulted from its movement into the cool sea surface temperature area in the East China Sea,the intrusion of cold air from the mainland into the typhoon,and a rapid increase of the vertical wind shear in the surrounding environment.An important factor that led to the demise of the typhoon was a significant decrease in the moisture transport into the typhoon.Furthermore,the results of the numerical simulation and sensitivity experiments indicate that sea surface temperature largely modulated the rapid weakening of typhoon Xangsane.

关 键 词：TYPHOON Xangsane RAPID WEAKENING DIAGNOSTIC ANALYSIS NUMERICAL simulation structural ANALYSIS 

分 类 号：P444[天文地球—大气科学及气象学]