利用卫星资料分析台风“浪卡”非对称结构及降水  

Analysis on Asymmetric Structure of Tropical Cyclone Nangka and the Related Precipitation using Satellite Data

作　　者：李霞[1] 林少冰[1] 王捷纯 卢山[1] 

机构地区：[1]广州中心气象台,广东广州510080 [2]广州卫星地面站,广东广州510080

出　　处：《广东气象》2011年第3期1-6,共6页Guangdong Meteorology

基　　金：中国气象科学研究院灾害天气国家重点实验室开放课题(2008LASW-B05);广东省科技厅技术研究与开发项目"南海热带气旋发生发展研究"(2009B080701108)联合资助

摘　　要：利用FY2D卫星资料、极轨卫星和静止卫星资料以及美国国家环境预报中心(NCEP/NCAR)的再分析资料等,研究了浪卡非对称结构和外围暴雨分布特点。结果表明,浪卡显著的不对称结构表现在其南侧积云对流较为旺盛,涡度中心也在南侧;浪卡登陆后,降水的水汽来源主要是副高西侧的偏南气流带来的水汽和850 hPa的西南季风带来的水汽;OLR场的配置对浪卡的移动路径有很好的指示意义。Based on the geostationary and the polar - orbited satellite data, as well as the NCEP reanalysis dataset, the asymmetric structure of tropical cyclone Nangka and the associated precipitation are studied in this paper. The results show that the southerly located vorticity center and the intensive cumulus convection in southern half of cyclone exhibit the significant asymmetric structure of tropical cyclone Nangka. After the landfall of Nangka, the water vapor brought by the southerly airflow along the western flank of the subtropical high and the southwest monsoon sustains the heavy rainfall. The orientation of low OLR zone around the typhoon center also indicates the movement of Nangka.

关 键 词：天气学 非对称结构 暴雨 卫星资料 台风“浪卡” 

分 类 号：P44[天文地球—大气科学及气象学]