Typical Cases Study of Classified Precipitation Process in Summer over Qilian Mountains

J4 ›› 2008, Vol. 26 ›› Issue (3): 1-7.

Typical Cases Study of Classified Precipitation Process in Summer over Qilian Mountains

Chen qian¹,Chen tianyu¹,Xiaohongbin²

1.GansuWeatherModificationOffice,Lanzhou730020,China;2.QinghaiResearchInstituteofMeteorology,Xi.ning810001,China

Received:2008-04-21 Revised:2008-07-02 Online:2008-09-30 Published:2008-09-30

祁连山区夏季各类降水过程的典型个例分析

陈 ??乾¹,陈添宇¹,肖宏斌²

1.甘肃省人工影响天气办公室,甘肃兰州 730020;2.青海省气象科学研究所,青海西宁 810001

作者简介:陈乾(1934 - ) ,男,上海市人,研究员,从事强对流天气和卫星遥感应用研究. E - mail: qianchen_2006@yahoo. com. cn
基金资助:
国家自然基金重点项目/西北地形云结构及降水机理研究0(40533015)资助

Abstract

Abstract:

According to the macro - scale synop tic patterns of p recip itation p rocesses over Qilian mountains, including southwest air currentmoving, southwest air current blocking, northwest air current cold advection, Hetao cold vortex, and flatwesterly air current,the typ ical cases for differrent patterns were selected to analyze circulation character, subtrop ical westerly jet, vertical velocity, vapor transport, vapor flux convergence, synop tic system and potential instability index of each synop tic pattern which generated p recip itation p rocess. The generated conditions of orographic cloud andmesoscale convective cloud cluster, aswell as p recip itation intensitywere also analyzed using satellite images.

Key words: Qilian mountains, p recip itation process, typ ical cases, diagnostic analysis

摘要：

对祁连山区降水过程的大尺度天气类型:西南气流移动型!西南气流阻塞型!西北气流冷平流型!河套冷涡型和平直西风气流型,分类选取典型个例,对各类型产生降水的环流特征!副热带西风急流!垂直速度!水汽输送和水汽汇!影响降水的天气系统和稳定度等进行诊断分析,并对照云图分析了地形云和对流云团产生的条件,降水强度等.

关键词: 祁连山区, 降水过程, 典型个例, 诊断分析

CLC Number:

434^+.5

Chen- Gan, CHEN Tian-Yu, XIAO Hong-Bin. Typical Cases Study of Classified Precipitation Process in Summer over Qilian Mountains[J]. J4, 2008, 26(3): 1-7.

陈乾, 陈添宇, 肖宏斌. 祁连山区夏季各类降水过程的典型个例分析[J]. J4, 2008, 26(3): 1-7.

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