气象2017，Vol.43Issue(5)：634-640,7.DOI:10.7519/j.issn.1000-0526.2017.05.013
2017年2月大气环流和天气分析
Analysis of the February 2017 Atmospheric Circulation and Weather
摘要
Abstract
The main characteristics of the general atmospheric circulation in February 2017 are as follows.There was one polar vortex center in the Northern Hemisphere and stronger than usual.The circulation in Eurasian middle-high latitudes showed a three-wave pattern.The strength of western Pacific subtropical high was near climatological normal.The south branch trough was a little weaker than normal years.The monthly mean temperature was 0℃,which is 1.7℃ higher than normal,while the monthly mean precipitation amount was 14.4 mm,which is 17.1％00 less than normal.Two waves of strong cold air processes and three rainfall processes occurred during this month.Because of the second wave of strong cold air process,a snowstorm event was seen in Xinjiang,with the daily precipitation breaking the historical extremum.Meanwhile,two fog-haze weather events appeared in the central and eastern part of China.关键词
大气环流/冷空气/雨雪天气/雾-霾Key words
atmospheric circulation/cold air/rain and snow weather/fog-haze分类
天文与地球科学引用本文复制引用
毛旭,张涛..2017年2月大气环流和天气分析[J].气象,2017,43(5):634-640,7.
