气象Issue(8)：1026-1031,6.DOI:10.7519/j.issn.1000-0526.2014.08.014
2014年5月大气环流和天气分析
Analysis of Atmosphere Circulation and Weather in May 2014
摘要
Abstract
The main characteristics of the general atmospheric circulation in May 2014 are as follows:There is one polar vortex center in the Northern Hemisphere,and the intensity is 524 dagpm,4-6 dagpm stron-ger than normal years.The 500 hPa geopotential height presents distribution of a four-wave pattern in high latitudes of Northern Hemisphere,and the most areas in the eastern region of China are controlled by west air flow,causing more short-wave trough activities.Subtropical high is more westward and north-ward than normal,which is the main cause for the extreme precipitation seen many times in South China. Monsoon starts later than normal years over South China Sea.The monthly mean temperature is 16.5℃, 0.3℃ higher than normal.The monthly mean precipitation amount is 73.8 mm,which is 6.2% more than normal.The main weather characteristics in this month is as follows:Torrential rainfalls occur in South-ern China frequently,and extreme high temperatures appear in Northern China.关键词
大气环流/副热带高压/暴雨/强对流/高温Key words
atmosphere circulation/subtropical high/torrential rain/severe convection/high temperature分类
天文与地球科学引用本文复制引用
蔡雪薇,张芳华..2014年5月大气环流和天气分析[J].气象,2014,(8):1026-1031,6.
