气象Issue(7)：898-904,7.DOI:10.7519/j.issn.1000-0526.2014.07.015
2014年4月大气环流和天气分析
Analysis of the April 2014 Atmospheric Circulation and Weather
摘要
Abstract
The characteristics of general circulation of atmosphere in April 2014 are as follows.There is one single center of the Northern Hemisphere polar vortex which is located near as the northern part of Kara Sea.The Asia ridge is stronger,because of which,the mean temperature of April in China is 1 1℃,1 .1℃higher than the normal,and is recorded as the fifth highest one from 1961.The position and strength of East Asia trough,south branch,and subtropical high of Northwest Pacific all are neutral compared to the normal condition.In April,the monthly mean precipitation over China is 43 .7 mm,slightly less than the normal.In addition,strong convective weathers like short-time severe precipitation,thunders-storm high winds,etc.occur in the southern part of Jiangnan Region and South China.Moreover,there are several sand and dust events in north of China,and extreme high temperature and sharp drop in temperature are observed by some stations.关键词
环流形势/冷空气/暴雨/沙尘/强对流Key words
circulation situation/cold air/torrential rain/sand and dust/severe convective weather分类
天文与地球科学引用本文复制引用
樊利强,张涛,孙瑾..2014年4月大气环流和天气分析[J].气象,2014,(7):898-904,7.
