气象Issue(12)：1466-1476,11.DOI:10.7519/j.issn.1000-0526.2015.12.004
冷涡背景下短时强降水的统计分析
Statistical Analysis of Severe Short-Time Precipitation Under Cold Vortex Background
摘要
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 He-bei,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 devel-oping phases.Besides,it is located mainly in the southeast and southwest of vortex center.And the distri-bution of severe short-time precipitation is different in different cold vortexes.关键词
冷涡/短时强降水/统计分析Key words
cold vortex/severe short-time precipitation/statistical analysis分类
天文与地球科学引用本文复制引用
何晗,谌芸,肖天贵,王娟,陈玥..冷涡背景下短时强降水的统计分析[J].气象,2015,(12):1466-1476,11.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 （）
