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投稿时间:2008-10-03 修订日期:2008-12-16
投稿时间:2008-10-03 修订日期:2008-12-16
中文摘要: 利用每小时地面观测资料和卫星资料,以1996—2005年在海南岛登陆的热带气旋为研究对象,
按照气旋移动路径将其分为4大类,从4类不同路径的7个个例分析揭示了登陆海
南热带气旋降水的中尺度特征及其分布变化。结果表明,不同路径的热带气旋登陆前10个小
时之内,中尺度强降水基本上分布于热带气旋中心附近;而热带气旋登陆后,中尺度强降水开
始出现明显的“离心”或“偏心”特征。不同路径的热带气旋在登陆前后,其最大降水中心
的强度变化也有明显差异。登陆前后, 中尺度强降水基本均出现在气旋中心西南到东南侧10
0~200km内,表现出明显的南北不对称。个例分析也证明,热带气旋强降水在空间和时间上
都具有明显的中尺度特征。
Abstract:Distribution and variation characteristics of mesoscale precipitation
of tropical cyclones landed in Hainan during 1996-2005 are studied with the dat
a of hourly precipitation from satellite and surface observation. Based on the d
ifferent moving pathways, the landing cyclones can be divided into four major ca
tegories. The analysis of four different types in seven cases indicates that the
re is a distinct variation of mesoscale precipitation distribution before
and af
ter tropical cyclones landfall. The results show that the mesoscale precipitatio
n distributes quasi symmetrically near the center of tropical cyclones in 10 hou
rs before landfall,but after 10 hours mesoscale precipitation
distributes asymmetrically near the center of tropical cyclones or far a
way center of tropical cyclones.
The intensity variation of maximal precipitation center is obvious during the la
ndfall course.
文章编号: 中图分类号: 文献标志码:
基金项目:海南省重点科技计划项目“海南江河流域面雨量预报系统建设”(0802
22);上海台风研究基金课题登陆热带气旋三维结构及其演变规律研究(2006STA01 7)资助
。
引用文本:
冯文,许向春,黄耀怀,王凡,2009.登陆海南的热带气旋中尺度降水分布变化特征[J].气象,35(3):15-20.
Feng Wen,Xu Xiangchun,Huang Yaohuai,Wang Fan,2009.Distribution and Variation Characteristics of Mesoscale Precipitation of Tropical Cyclones Landed in Hainan [J].Meteor Mon,35(3):15-20.
冯文,许向春,黄耀怀,王凡,2009.登陆海南的热带气旋中尺度降水分布变化特征[J].气象,35(3):15-20.
Feng Wen,Xu Xiangchun,Huang Yaohuai,Wang Fan,2009.Distribution and Variation Characteristics of Mesoscale Precipitation of Tropical Cyclones Landed in Hainan [J].Meteor Mon,35(3):15-20.