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Study on the long sustaining mechanism after typhoon “Haikui” landfall(1211号台风“海葵”登陆后长久维持机理探讨)
Authors
CHENGSheng(程胜)
HUANGLinglin(黄玲琳)
+3 more
LIHongquan(李洪权)
WEILihua(魏丽华)
XIANGHua(向华)
Publication date
1 December 2014
Publisher
Zhejiang University Press
Doi
Abstract
利用2.5 °×2.5°的NCEP再分析资料、实况监测资料、卫星云图等资料,从大尺度环流背景、下垫面、冷空气作用和物理量场诊断等方面对典型个例1211号台风进行了分析,寻找登陆台风(TC)强度变化的预报着眼点.结果表明,中低空急流既是“海葵”主要的湿能源,也是动能来源之一,中纬度强锋区向“海葵”靠近使TC的动能机制得到持续加强,加强了对流,从而加强了降水的潜热释放,为变性后TC的维持和发展提供了能量,“海葵”登陆后最大的垂直风切变一直分布在TC南北两侧,这样的对称结构对TC垂直环流的维持更加有利,宽广的湿垫也为TC 登陆后的维持提供了有利的环境场
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Last time updated on 08/08/2024