冷涡背景下短时强降水的统计分析

何晗; 谌芸; 肖天贵; 王娟; 陈玥

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DOI:10.7519/j.issn.1000-0526.2015.12.004

气象:2015,41(12):1466-1476

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冷涡背景下短时强降水的统计分析

何晗¹, 谌芸², 肖天贵¹, 王娟³, 陈玥⁴

(1.成都信息工程大学，成都 610225;2.国家气象中心，北京 100081;3.北京昌平气象台，北京 102200;4.南京信息工程大学，南京 210044)

Statistical Analysis of Severe Short Time Precipitation Under Cold Vortex Background

HE Han¹, CHEN Yun², XIAO Tiangui¹, WANG Juan³, CHEN Yue⁴

(1.Chengdu University of Information Technology, Chengdu 610225;2.National Meteorological Centre, Beijing 100081;3.Changping Meteorological Observatory of Beijing, Beijing 102200;4.Nanjing University of Information Science and Technology, Nanjing 210044)

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本文已被：浏览 1661次下载 2317次
投稿时间：2015-03-07 修订日期：2015-05-08

中文摘要: 本文首先给出冷涡的定义，然后根据此定义识别出2009—2013年4—9月的冷涡有65个，分析冷涡的时空分布特征及生命史特征发现：冷涡的月变化特征明显，7月冷涡个数和维持的天数最多。冷涡主要发生在贝加尔湖东部、蒙古的东部和东北的西北部地区，生命史大多为3 d。利用自动站小时雨量资料统计分析冷涡背景下短时强降水特征及其与冷涡的关系，结果表明：冷涡背景下的短时强降水主要集中在京津和河北东南部，以及东北平原地区，7月最多，日变化表现为午后至傍晚时段多发。冷涡的各个时期都能产生短时强降水，发展时期最多，降水主要位于冷涡中心的东南部和西南部，不同类型的冷涡降水分布不同。

中文关键词: 冷涡, 短时强降水, 统计分析

Abstract:Cold vortex is firstly defined in this paper. And then 65 cold vortexes are identified from April to September of 2009-2013 based on the definition. Their spatio temporal distributions are studied. The monthly variation of cold vortexes is obvious, and the most of them occur in July, mainly from the east of Lake Baikal and Mongolia to the northwest of Northeast China. Most cold vortexes live for more than 3 days. Hourly rainfall data of automatic weather station are used to analyze the characteristics of the severe short time precipitation under the background of cold vortex and its relations with cold vortex. The results show that severe short time precipitation accompanying cold vortex mainly occurs in the southeast of Hebei, Beijing, Tianjin and the Northeast Plain in July. Besides, such events are often seen from afternoon to evening. Severe short time precipitation can occur in any phases of cold vortexes, mainly during the developing phases. Besides, it is located mainly in the southeast and southwest of vortex center. And the distribution of severe short time precipitation is different in different cold vortexes.

keywords: cold vortex, severe short time precipitation, statistical analysis

文章编号： 中图分类号： 文献标志码：

基金项目:国家自然科学基金面上项目(41175048)和公益性行业(气象)科研专项(GYHY201206004和GYHY201406001)共同资助

作者	单位
何晗	成都信息工程大学，成都 610225
谌芸	国家气象中心，北京 100081
肖天贵	成都信息工程大学，成都 610225
王娟	北京昌平气象台，北京 102200
陈玥	南京信息工程大学，南京 210044

Author Name	Affiliation
HE Han	Chengdu University of Information Technology, Chengdu 610225
CHEN Yun	National Meteorological Centre, Beijing 100081
XIAO Tiangui	Chengdu University of Information Technology, Chengdu 610225
WANG Juan	Changping Meteorological Observatory of Beijing, Beijing 102200
CHEN Yue	Nanjing University of Information Science and Technology, Nanjing 210044

引用文本：
何晗,谌芸,肖天贵,王娟,陈玥,2015.冷涡背景下短时强降水的统计分析[J].气象,41(12):1466-1476.
HE Han,CHEN Yun,XIAO Tiangui,WANG Juan,CHEN Yue,2015.Statistical Analysis of Severe Short Time Precipitation Under Cold Vortex Background[J].Meteor Mon,41(12):1466-1476.