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气象:2019,45(1):135-140
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2018年10月大气环流和天气分析
曹越男,高拴柱
(国家气象中心,北京 100081)
Analysis of the October 2018 Atmospheric Circulation and Weather
CAO Yuenan,GAO Shuanzhu
(National Meteorological Centre, Beijing 100081)
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投稿时间:2018-11-24    修订日期:2018-12-02
中文摘要: 2018年10月大气环流主要特征如下:北半球极涡呈偶极型,中高纬地区西风带为4波型分布,西太平洋副热带高压较常年位置偏西。全国平均降水量为28.1 mm,较常年同期(35.8 mm)偏少21.6%。全国平均气温为9.9℃,较常年同期(10.3℃)偏低0.4℃,为近16年来同期最低。10月我国大范围暴雨天气过程,江南及华南地区雨日较多。冷空气活动频繁,出现5次过程,较常年偏多。京津冀地区出现2次雾 霾天气过程,相对往年秋、冬季雾 霾偏轻。月内没有台风登陆我国。
Abstract:The main characteristics of the general atmospheric circulation in October 2018 are as follows. Over the Northern Hemisphere, the polar vortex showed a dipole pattern. The circulation presented a four wave pattern in middle high latitudes. The western Pacific subtropical high extented remarkably more westward than normal. The monthly mean precipitation amount was 28.1 mm, which is 21.6% less than normal (35.8 mm). The monthly mean temperature was 9.9℃, 0.4℃ lower than normal (10.3℃), ran king the lowest since 2002. There was no large range heavy rainfall processes over China. There were five cold air processes, more than usual, and two fog and haze events in the region of Beijing Tianjin Hebei, which were also weaker than usual. There was no landfall typhoon in October 2018.
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曹越男,高拴柱,2019.2018年10月大气环流和天气分析[J].气象,45(1):135-140.
CAO Yuenan,GAO Shuanzhu,2019.Analysis of the October 2018 Atmospheric Circulation and Weather[J].Meteor Mon,45(1):135-140.