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运城市低温大雪冰冻过程成因分析
引用本文:魏海茹,盖晓东,李冬梅.运城市低温大雪冰冻过程成因分析[J].新疆气象,2009,3(3):35-38.
作者姓名:魏海茹  盖晓东  李冬梅
作者单位:魏海茹,李冬梅,陈雪珍,刘婉莉,谢纪民(运城市气象局,山西运城,044000);盖晓东(黑龙江省气象台,黑龙江哈尔滨,150030) 
摘    要:针对2008年1月中下旬运城市出现近50a来罕见的低温大雪冰冻天气过程的环流背景、影响系统、旬平均场等因素进行详细分析,结果表明:高纬度环流经向度大,南支槽活跃,副高偏北、偏强是造成持续低温冰冻的主要原因;而高空回暖、地面回流以及西南急流加强是造成运城强降雪的重要因素。

关 键 词:低温冰冻  旬平均场  强降雪  成因分析

Analysis of Low Temperature, Snowfall and Frost Weather in Yuncheng, Shanxi
Institution:WEI Hai-ru, GAI Xiao-dong, LI Dong-mei, CHEN Xue-zhen, LIU Wan-li, XIE Ji-min (1.Yuncheng Meteorological Bureau, Yuncheng 044000,China; 2.Heilongjiang Meteorological Observatory,Harbing 150030,China)
Abstract:The circulation background, large scale weather system and ten-day averaged flow field, which induce the detail low temperature, heavy snowfall and frost weather occurred rarely in the last 50 years in Yuncheng on the second half of Jan. 2008, are investigated in detail. The results present that the lasting low temperature and frost weather were induced dominantly by the stronger meridionality of high latitude circulation, activity southern trough and the stronger northwardmoving subtropical high pressure. While the return-warm high-level, circumfluence in surface and enhanced southwest jet were main factors to bring heavy snowfall in Yuncheng.
Keywords:low temperature and frost weather  ten-day averaged flow field  intense snowfall  genetic analysis
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