2007年淮河流域雨季暴雨多尺度环流分析  

Multiscale Circulation Features of Heavy Rain over Huaihe River Basin in Rainy Season in 2007

作　　者：张晓红[1] 贾天山 胡雯[1] 

机构地区：[1]淮河流域气象中心,安徽蚌埠233000 [2]滁州市气象局,安徽滁州239000

出　　处：《南京气象学院学报》2009年第2期321-326,共6页Journal of Nanjing Institute of Meteorology

基　　金：国家自然科学基金资助项目(40675001);中国气象局气象新技术推广重点项目(CMATG2007Z11);中国气象科学研究院灾害天气国家重点实验室开放课题(2007Lasw11-1)

摘　　要：使用NCEP/NCAR 1°×1°逐日再分析资料、风云2号气象卫星亮温(TBB)资料,分析2007年淮河流域梅雨期降水的多尺度特征。结果表明,2007年梅雨期暴雨集中在淮河流域,其中从6月30日—7月8日,沿淮淮北连续9 d暴雨、大暴雨,降水集中程度和降水强度均超过2003年,导致淮河流域发生仅次于1954年大洪水。雨季期间乌拉尔山附近的阻塞高压频繁出现;西太平洋副热带高压偏强,且位置稳定;强盛的季风涌将充沛的水汽输送到淮河流域一带与中高纬度干冷空气频繁交汇。西太平洋副热带高压稳定偏强、强盛的季风涌、中高纬度冷空气和青藏高原对流扰动东传的有利配置导致2007年淮河流域集中强降水。Based on the NCEP/NCAR 1°×1° daily reanalysis data and TBB（temperature of black body） data of FY2 satellite,the multiscale circulation features of heavy rain over Huaihe River Basin in rainy season in 2007 are studied.Results show that the main rainband is located in Huaihe River Basin in the rainy season.Specially,the heavy rain and rainstorm successively occurr in Huaihe River Basin from 30 June to 8 July,and the concentration degree and intensity of precipitation are stronger than those in 2003,which cause the greatest flood over Huaihe River Basin since 1954.During the rainy season,the Ural blocking high frequently emerges,and the west Pacific subtropical high is stronger than the normal with a stable location.When strong monsoon surge meets with dry cold air from middle and high latitudes,there will be heavy rain in Huiahe River Basin.The favorable relationships of the strong and stable west Pacific subtropical high,strong monsoon surge,dry cold air from middle-high latitudes and propagating eastward convection disturbance over the Tibetan Plateau lead to the heavy rain over Huaihe River Basin in 2007.

关 键 词：阻塞高压 西太平洋副热带高压 季风涌 青藏高原对流扰动 淮河流域 2007年雨季暴雨 

分 类 号：P434[天文地球—大气科学及气象学]