气象Issue(2)：253-259,7.DOI:10.7519/j.issn.1000-0526.2014.02.015
2013年11月大气环流和天气分析
Analysis of the November 2013 Atmospheric Circulation and Weather
摘要
Abstract
The main characteristics of the general atmospheric circulation in November 2013 are as follows. There is one polar vortex center located in the Arctic Circle in the Northern Hemisphere with stronger strength than normal years.The circulation presents latitudinal patterns in middle and high latitudes.The average south branch trough is located around 80°E.The subtropical high is stronger than normal years, located more westward and northward.The monthly mean precipitation is 22.5 mm,19.7%more than the normal (18.8 mm).The monthly mean temperature is 3.6℃,0.7℃ higher than the normal (2.9℃). There are three cold air processes and six heavier rainfall processes during this month.The Northeast Re-gion suffers from extreme snows twice and some places are hit by snowstorm or blizzards.Tropical cyclone“Haiyan”brings gale and heavy rains to South China.There are obvious rainfalls in the northern winter wheat region and the Jiangnan Region.Meanwhile,the fog and the haze appear in the central and eastern China due to the weak cold airs.The monthly mean fog and haze days are 4.3 days,which is the maximum record since 1 9 6 1 .关键词
大气环流/暴雨(雪)/冷空气/雾霾Key words
atmospheric circulation/rain (snow)storm/cold air/fog and haze分类
天文与地球科学引用本文复制引用
赖芬芬,何立富..2013年11月大气环流和天气分析[J].气象,2014,(2):253-259,7.
