冬季北疆一次转折性寒潮天气分析  

Analysis of A Turning Cold Wave in Northern Xinjiang in Winter

作　　者：白惠星 肖书君 肉孜.阿基 秦贺 

机构地区：[1]新疆维吾尔自治区气象台,新疆乌鲁木齐830002 [2]国家气象中心,北京100081

出　　处：《安徽农业科学》2010年第3期1332-1335,1370,共5页Journal of Anhui Agricultural Sciences

基　　金：中国气象局新技术推广预报员专项(CMATG2009YB10)资助

摘　　要：从100bPa超长波环流演变背景、500hPa长波演变、低层流场及有关物理量的变化等方面，对2009年2月10～13日影响北疆的转折性寒潮天气过程进行分析。结果表明，100hPa极涡异常，正二波稳定；500hPa西西伯利亚低压槽“突变”；强烈冷平流及中亚水汽输送是此次寒潮天气的主要原因。Based on analyzing the circulation development of 100 hPa, 500 hPa, lower streamline field and the change of physical variables, the diagnostic analysis of a turning cold wave process in northern Xinjiang from Feb. 10 - 13th 2009 was carried out. The results showed that abnormality of 100 hPa polar vortex taking on stable two waves, catastrophe of 500 hPa western Siberian trough, strong cold advection and water vapor transport from middle Asia are chief reasons of the process.

关 键 词：寒潮 极涡异常 西西伯利亚低槽 冷平流 

分 类 号：S162[农业科学—农业气象学]