气象2012，Vol.38Issue(6)：751-757,7.
2012年3月大气环流和天气分析
Analysis of the March 2012 Atmospheric Circulation and Weather
摘要
Abstract
The following are the main characteristics of the general circulation of atmosphere in March 2012. There are multi-polar vortex centers in the Northern Hemisphere with slightly stronger strength than normal years. The circulation presents a four-wave pattern in middle-high latitudes. The south branch trough is slightly stronger than normal years and the situation is favorable for the transportation of water vapor. The strength of the Western Pacific subtropical high is weaker than normal years. The monthly mean temperature is 3.5℃, which is lower than the same period of normal years. The mean pre- cipitation （31.4 mm） is 8.7M more than normal. There are 3 cold surge processes affecting China in this month, the first sand and dust weather process appeared in northern China, and the continuous low tem- perature and rainy weather occurred in southern China for a long time.关键词
大气环流/冷空气/暴雨/沙尘Key words
atmospheric circulation/cold air/heavy rain/sand and dust weather分类
天文与地球科学引用本文复制引用
樊利强,孙谨..2012年3月大气环流和天气分析[J].气象,2012,38(6):751-757,7.基金项目
国家气象中心青年基金（220099011001002009）资助 （）
