环境条件对0709号超强台风“圣帕”影响的分析  

An analysis of the environmental effect on super typhoon Sepat(0709)

作　　者：石顺吉[1,2,3] 余锦华[1,2] 郑礼新 

机构地区：[1]南京信息工程大学江苏省气象灾害重点实验室,江苏南京210044 [2]南京信息工程大学大气科学学院,江苏南京210044 [3]厦门市气象台,福建厦门361012

出　　处：《台湾海峡》2009年第1期135-141,共7页Journal of Oceanography In Taiwan Strait

基　　金：国家自然科学基金资助项目(40775060);江苏省高校自然科学基础研究项目(07KJB170065);中国气象科学研究院灾害天气国家重点实验室2007年开放课题(2007LASW09)

摘　　要：利用多种卫星观测资料和NCAR/NCEP提供的分析场,分析海温和环境垂直风切变这两个环境因素对0709号超强台风"圣帕"的强度、对流和降水结构的影响.结果表明:强度的变化和环境垂直风切变之间没有直接相关性,海温是影响强度变化的主要环境因素;最大对流区域位于顺切变方向左侧;较强切变条件下,在内眼壁上的最大降水位于顺切变方向左侧,降水呈一波非对称分布;在外围螺旋雨带上的最大降水区域则分布在顺切变方向上或顺切变方向右侧.Using satellite observation data from various sources and analysis field supplied by NCAR/NCEP, the effects of sea surface temperature （SST） and environmental vertical wind shear on the intensity, convection and precipitation structure of super typhoon Sepat （0709） were between change analyzed. Result shows that there was not directly relation of intensity and environmental vertical wind shear. And SST was the most important environmental factor of intensity change. The maximum convection area was located at downshear left. Under stronger shear condition, the maximum precipitation on inner core lay in downshear left and precipitation showed wavenumber-1 asymmetric distribution. The maximum precipitation in outer spiral rain band lay in downshear direction or downshear right.

关 键 词：超强台风“圣帕” 强度 对流 降水结构 海温 环境垂直风切变 

分 类 号：P444[天文地球—大气科学及气象学]