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高原边坡复杂地形下短时强降水的云型特征分类
狄潇泓1, 王小勇2, 肖玮1, 赵庆云1
(1.兰州中心气象台;2.甘肃省公共气象服务中心)
Cloud features Classification of Short-time Heavy RainfallIn Complex topography of plateau slope
dixiaohong1, wangxiaoyong2, xiaowei1, zhaoqingyun1
(1.Lanzhou Central Meteorological Observatory;2.Gansu Provincial Meteorological Service Center)
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投稿时间:2017-05-17    修订日期:2018-07-05
中文摘要: 利用逐时雨量资料、常规高低空观测资料及FY-2卫星云图,对2010-2015年5-9月甘肃省高原边坡复杂地形下的76次短时强降水过程个例的天气形势配置及卫星云图演变特征进行统计分析。结果表明,与甘肃省短时强降水过程相关的特征云型有:副高边沿型、逗点云型、冷锋前部型、冷锋尾部与南亚高压东侧叠置型、冷涡后部型、弱冷锋前部椭圆形MαCS型,共6类云型。其中,副高边沿型、冷锋前部型、弱冷锋前部椭圆形MαCS型与低层暖平流强迫有关。逗点云型、冷锋尾部与南亚高压东侧叠置型主要受高低空冷暖平流强烈交汇影响。冷涡后部型是高空冷平流强迫下形成。冷锋尾部与南亚高压东侧叠置型具有较好的预报指示意义。
中文关键词: 短时强降水  云型特征 分类
Abstract:Based on the observation data and FY-2 satellite cloud image,there is the statistical analysis on the configuration of weather situation and the evolution of satellite cloud images of 76 short time heavy rainfall processes from 2010-2015 years 5-9 months(Gansu Province).The results show that: There are six kinds of characteristic cloud,Subtropical high edge, Comma cloud,Front of the cold front,Overlay of Cold front tail and East South Asia,The back of the cold vortex,Elliptic clouds front of the Weak cold front, which are related to the short-term heavy rainfall in Gansu Province.Subtropical high edge, Front of the cold front and Elliptic clouds front of the Weak cold front were related to the low level warm advection forcing.Comma cloud and Overlay of Cold front tail and East South Asia were mainly affected by Strong convergence of warm and cold advection of High and low levels.The back of the cold vortex was formed by high altitude cold advection. Overlay of Cold front tail and East South Asia was the best.
文章编号:201705170272     中图分类号:    文献标志码:
基金项目:中国气象局预报员专项(CMAYBY2017-78)
引用文本:
狄潇泓,王小勇,肖玮,赵庆云,0.[en_title][J].Meteor Mon,():-.
dixiaohong,wangxiaoyong,xiaowei,zhaoqingyun,0.Cloud features Classification of Short-time Heavy RainfallIn Complex topography of plateau slope[J].Meteor Mon,():-.