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投稿时间：2006-04-04 修订日期：2007-03-01
投稿时间：2006-04-04 修订日期：2007-03-01
中文摘要: 利用常规的探空和地面资料以及NCEP/NCAR全球再分析资料，对9711号台风温妮和0509
号台风麦莎的变性过程和影响河北暴雨过程的湿位涡场进行了诊断分析。结果表明：温妮变
性再加强过程是一个温带气旋强烈发展的过程，主要与高层湿位涡扰动下传、热带
气旋低压环流两者之间的相互作用有关。而麦莎变性过程中，没有高层湿位涡扰动下传
和热带气旋低压环流之间的相互作用过程，无再加强过程。对流层中低层MPV1<0、MPV2>0 区域对应暴雨区，对此类暴雨具有较好的指示意义；对流层高层高值湿位涡下传，有利于位势不稳定能
Abstract:With conventional meteorological data as well as NCEP/NCAR reanalysis
data, the processes of the typhoon 9711 and the typhoon Matsa (0509) are diagno
sed and compared. The result indicates that the re strengthening of the typhoo
n
9711 after its denaturing was due to intense development of a frontal cyclon
e, which was incarnated by downwards moving of the upper level potiential votici
ty, the tropical low pressure circulation and the low level front. But in the p
r
ocess of the denaturing of the typhoon Matsa, there was no low level front, and
the atmospheric slanting piezotropy was weaker. So the mutual influence of downw
ards moving of the upper level potiential voticity, the tropical low pressure c
irculation and the low level front did not exist. MPV1<0 and MPV2>0 were
characteristic storm rainfall area, which is a good denotation of this kind of rainstorm. Downwards moving of the upper level potiential votic
ity is advantageous to releasing of the unstable energy, and causing the increas
ing precipitation.
keywords: typhoon storm rain wet potential voticity
文章编号： 中图分类号： 文献标志码：
基金项目:国家科技部科研所社会公益研究专项（2005DIB3J104）
引用文本：
何丽华,孔凡超,李江波,梁如意,张维,2007.影响河北两次相似路径台风的湿位涡对比分析[J].气象,33(4):65-70.
He Lihua,Kong Fanchao,Li Jiangbo,Liang Ruyi,Zhang Wei,2007.Analysis of Wet Potential Vorticity of Two Similar Typhoons Affecting Hebei Province[J].Meteor Mon,33(4):65-70.
何丽华,孔凡超,李江波,梁如意,张维,2007.影响河北两次相似路径台风的湿位涡对比分析[J].气象,33(4):65-70.
He Lihua,Kong Fanchao,Li Jiangbo,Liang Ruyi,Zhang Wei,2007.Analysis of Wet Potential Vorticity of Two Similar Typhoons Affecting Hebei Province[J].Meteor Mon,33(4):65-70.