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气象:2015,41(6):786-792
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2015年3月大气环流和天气分析
(国家气象中心,北京 100081)
Analysis of the March 2015 Atmospheric Circulation and Weather
(National Meteorological Centre, Beijing 100081)
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投稿时间:2015-04-24    修订日期:2015-05-02
中文摘要: 2015年3月大气环流主要特征是:北半球极涡呈偶极型分布,位置较常年同期明显偏南,欧亚中高纬环流经向度较小,南支槽平均位置位于70°E附近;同时,西太平洋副热带高压较常年同期明显偏强、位置偏西。3月,全国平均降水量为21.8 mm,较常年同期(29.5 mm)偏少26.1%。全国平均气温为5.8℃,较常年同期(4.1℃)偏高1.7℃。月内,我国出现5次主要的冷空气过程和5次主要的降水过程。江南等地多阴雨天气,我国东部出现3次轻到中度雾 霾天气,北方出现5次沙尘天气过程。
Abstract:The following are the main characteristics of the general circulation of atmosphere in March 2015. There are two polar vortex centers in the Northern Hemisphere located more southward than normal years. The circulation presents latitudinal patterns in middle high latitudes. The average south branch trough is located near 70°E. Besides, the subtropical high is much more stronger than normal years, and located more westward than normal years. The monthly mean precipitation is 21.8 mm, which is 26.1% less than normal (29.5mm). The monthly mean temperature is 5.8℃, which is 1.7℃ higher than normal (4.1℃). There are five cold air processes and five rainfall processes in the month. Meanwhile, fog and haze weather appears in the central and eastern part of China. Moreover, five sand dust processes occur in northern part of China.
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赖芬芬,孙军,2015.2015年3月大气环流和天气分析[J].气象,41(6):786-792.
LAI Fenfen,SUN Jun,2015.Analysis of the March 2015 Atmospheric Circulation and Weather[J].Meteor Mon,41(6):786-792.