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气象:2022,48(4):525-532
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2022年1月大气环流和天气分析
南洋,饶晓琴,尤媛,关良
(国家气象中心,北京 100081)
Analysis of the January 2022 Atmospheric Circulation and Weather
NAN Yang,RAO Xiaoqin,YOU Yuan,GUAN Liang
(National Meteorological Centre, Beijing 100081)
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投稿时间:2022-03-04    修订日期:2022-03-09
中文摘要: 2022年1月大气环流的主要特征是:北半球极涡呈偶极型,东亚大槽位置偏东,南支槽显著偏强。全国平均降水量为18.2 mm,比常年同期(14.5 mm)偏多25.5%。月内我国出现了2次大范围雨雪冰冻过程,影响范围广、降雪量大、雨雪相态转换复杂,江西、湖南、重庆、四川、云南、西藏等地遭受低温雨雪冰冻灾害影响。月内冷空气活动较弱,全国平均气温为-4.0℃,比常年同期(-4.8℃)偏高0.8℃。上中旬大气污染扩散和湿清除条件总体偏差,出现了2次雾-霾过程。
Abstract:The main characteristics of the general atmospheric circulation in January 2022 are as follow. There were two polar vortex centers in the Northern Hemisphere. The location of the East Asian trough was more eastward than in the same period of normal years. The southern branch trough was stronger during this month. The monthly mean precipitation over China was 18.2 mm, which is 25.5% more than normal (14.5 mm). However, during the month there were two widespread freezing rain and snow processes affecting the central and eastern parts of China, featured with a wide range of influence, heavy snowfall and complex phase patterns of rain and snow. Jiangxi, Hunan, Chongqing, Sichuan, Yunnan and Tibet etc. suffered at varying degrees from low temperature, freezing rain and snow disasters. Generally, cold air activities were weak during this month. The monthly mean temperature was -4.0℃, which is 0.8℃ higher than normal (-4.8℃). In addition, two fog-haze events occurred in this month.
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基金项目:中国气象局气象预报业务关键技术发展专项[YBGJXM(2020)2A-02]资助
引用文本:
南洋,饶晓琴,尤媛,关良,2022.2022年1月大气环流和天气分析[J].气象,48(4):525-532.
NAN Yang,RAO Xiaoqin,YOU Yuan,GUAN Liang,2022.Analysis of the January 2022 Atmospheric Circulation and Weather[J].Meteor Mon,48(4):525-532.