气象2017，Vol.43Issue(3)：378-384,7.DOI:10.7519/j.issn.1000-0526.2017.03.015
2016年12月大气环流和天气分析
Analysis of the December 2016 Atmospheric Circulation and Weather
摘要
Abstract
The main characteristics of the general atmospheric circulation in December 2016 are as follows:There were two polar vortex centers in the Northern Hemisphere with weaker pressure in the center than normal year. The circulation presented the trough-ridge-trough pattern in the middle-high latitudes of Eurasia.The south branch acted weakly,located near 90°E essentially.The subtropical high was stronger than normal years.The monthly mean precipitation was 11.5 mm,9.5%more than normal.Besides,the monthly mean temperature was-0.7℃, 2.5℃ higher than normal (-3.2℃),which is the maximum value for the corresponding periods since 1961 .Dur-ing this month,two cold air processes,two major rainfall processes and three large-scale fog-haze weather proces-ses occurred,of which the fog-haze event from 16 to 21 December was recorded as the most extensive,the longest lasting and the most severe fog-haze weather process in 2016.关键词
大气环流/雾-霾/气温/冷空气Key words
atmospheric circulation/fog-haze/temperature/cold air分类
天文与地球科学引用本文复制引用
刘超,马学款..2016年12月大气环流和天气分析[J].气象,2017,43(3):378-384,7.
