2010年1月大气环流和天气分析  

Analysis of the January 2010 Atmospheric Circulation and Weather

作　　者：徐辉 

机构地区：[1]国家气象中心,北京100081

出　　处：《气象》2010年第4期137-141,共5页Meteorological Monthly

基　　金：中国气象局新技术推广项目CMATG2009YB16资助

摘　　要：2010年1月,全国平均降水量为14.5 mm,较常年同期偏多2.4 mm,平均气温为-4.5℃较常年同期偏高1.4℃。月内,冷空气活动比较频繁,但强冷空气过程只有两次,2—7日和18—23日受强冷空气影响,我国大部出现大风降温和雨雪天气,北疆部分地区持续暴雪。除中旬全国降水较少之外,本月上旬和下旬全国共有6次主要的降水过程。此外,从本月的环流形势来看,极涡的强度比常年同期偏强,南支槽比常年同期偏弱,而副高则比常年同期偏强偏北。The country has 2.4 mm precipitation more than the same period of normal years during January 2010 and the average temperature is 1.4℃ higher than that of same period. The cold air is active in this month, but only two of them reach the strong intensity and thus parts of northern Xinjiang suffer from snowstorm . The times of main precipitation process in whole country are up to six in all in this month. Additionally, the polar vortex and subtropical high are stronger than the same period of normal years, but the south branch trough is weaker than the same period of normal years.

关 键 词：寒潮 暴雪 极涡 副高 

分 类 号：P458.121.1[天文地球—大气科学及气象学]