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气象:2020,46(4):575-580
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2020年1月大气环流和天气分析
江琪,桂海林,徐冉
(国家气象中心,北京 100081)
Analysis of January 2020 Atmospheric Circulation and Weather
JIANG Qi,GUI Hailin,XU Ran
(National Meteorological Centre, Beijing 100081)
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投稿时间:2020-02-28    修订日期:2020-03-10
中文摘要: 2016年1月大气环流主要特征为:北半球极涡呈偶极型分布,东亚大槽位置较常年同期偏东偏北,强度偏弱。1月,全国平均降水量为23.3 mm,较常年同期(13.2 mm)偏多77%,为1961年以来历史同期第二多。1月,全国平均气温为-3.6℃,较常年同期(-5.0℃)偏高1.4℃,月内冷空气较弱,我国中东部雾 霾天气频发,共有三次大范围持续性雾 霾过程,分别为1月3—5日、16—18日和22—28日。此外,月内共有四次降水过程。
Abstract:The following are the main characteristics of the general circulation of atmosphere in January 2020. There were two polar vortex centers in the Northern Hemisphere. The location of the East Asian trough was more eastward and northward than that in the same period of normal years, and the strength was weak. The monthly mean precipitation (23.3 mm) was 77% above normal, which is the second in January since 1961. The average temperature (-3.6℃) was 1.4℃ higher than in the normal years, and the cold air processes were weak. The fog haze weather in the central and eastern part of China occurred frequently and there were three large scale continuous fog haze processes, respectively in 3-5, 16-18 and 22-28 January. In addition, four precipitation processes appeared in the month.
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基金项目:国家自然科学基金面上项目(41875181)资助
引用文本:
江琪,桂海林,徐冉,2020.2020年1月大气环流和天气分析[J].气象,46(4):575-580.
JIANG Qi,GUI Hailin,XU Ran,2020.Analysis of January 2020 Atmospheric Circulation and Weather[J].Meteor Mon,46(4):575-580.