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热带气旋莫兰蒂(1010)强度的观测研究和增强条件的诊断分析

高拴柱 吕心艳 王海平 许映龙

气象2012,Vol.38Issue(7):834-840,7.
气象2012,Vol.38Issue(7):834-840,7.

热带气旋莫兰蒂(1010)强度的观测研究和增强条件的诊断分析

An Observational and Diagnostic Analysis on the Intensity and Intensity Changes of Typhoon Meranti (1010)

高拴柱 1吕心艳 1王海平 1许映龙1

作者信息

  • 1. 国家气象中心,北京100081
  • 折叠

摘要

Abstract

Typhoon Meranti intensified significantly after moving into the Taiwan Straits. This paper per formed a survey on the intensity change of tropical cyclones with a similar track to Meranti in history and found that almost no TCs intensified. The process of the intensity change of Meranti in the Taiwan Straits is analyzed. We find that the intensity estimates provided by many typhoon forecast centers in operation are weaker than observations greatly. By using synoptic and dynamic diagnosis, we analyze the basic envi ronment conditions of the tropical cyclone's development when Meranti moves into the Taiwan Straits and find that the high SST in the Taiwan Straits, the abundant water vapor transport in lower and middle lev els, the strong lowlevel convergence and upperlevel divergence, and the intense lowlevel positive vortici ty transport provides the favorable dynamic and thermodynamic conditions for the intensification of Meran ti, and the weak vertical environmental wind shear cannot inhibit the development of Meranti. These re sults may turn out to be meaningful references for operational TC intensity forecast.

关键词

“莫兰蒂”/热带气旋强度/强度变化/诊断分析

Key words

Meranti/tropical cyclone intensity/intensity change/diagnostic analysis

分类

天文与地球科学

引用本文复制引用

高拴柱,吕心艳,王海平,许映龙..热带气旋莫兰蒂(1010)强度的观测研究和增强条件的诊断分析[J].气象,2012,38(7):834-840,7.

基金项目

国家自然科学基金项目(40905028和40975035)、公益性行业(气象)科研专项(GYHY201006008)和中国气象局预报员专项项目(CMAYBY2011-058)共同资助 ()

气象

OA北大核心CSCDCSTPCD

1000-0526

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