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气象:2023,49(9):1149-1156
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2023年6月大气环流和天气分析
刘一,马杰,李勇,胡莹莹
(国家气象中心,北京 100081)
Analysis of the June 2023 Atmospheric Circulation and Weather
LIU Yi,MA Jie,LI Yong,HU Yingying
(National Meteorological Centre, Beijing 100081)
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投稿时间:2023-08-09    修订日期:2023-08-21
中文摘要: 2023年6月大气环流主要特征为北半球极涡呈多极型分布,乌拉尔山上空500 hPa高度场较常年同期显著偏弱,西太平洋副热带高压位置较常年同期偏北、偏西。6月全国平均降水量为86.7 mm,较常年偏少16%,为2005年以来同期最少。全国平均气温为21.1℃,较常年同期偏高0.7℃,为1961年以来历史同期第二高。月内有5次区域性大范围降水过程,主要位于西南和江淮以南地区; 5次大范围高温过程,主要发生在西部和华北地区。6月共有1个台风生成,较常年同期偏少。月内共发生7次强对流天气过程,主要集中在辽宁、吉林、江苏、安徽、广东和广西。由于降水偏少、气温偏高,北方地区干旱加剧。
Abstract:The main characteristics of atmospheric circulation in the Northern Hemisphere exhibited a multipolar distribution of polar vortices in June 2023. The 500 hPa geopotential height field over the Ural Mountains was significantly weaker than the climatological average for the same period. The Western Pacific subtropical high was located more northward and westward than the normal situation. The average precipitation in June was 86.7 mm, which is 16% less than normal; and the least rainfall amount for the same period since 2005. The national average temperature was 21.1℃, showing a positive anomaly of 0.7℃, the second-highest since 1961. During this month, there were five regional torrential rain events mainly in Southwest China and the areas south of the Jianghuai Region. During this month, five large-scale high-temperature processes influence the western and northern parts of China. Moreover, seven severe convective weather events occurred in the provinces of Liaoning, Jilin, Jiangsu, Anhui, Guangdong and Guangxi. In terms of typhoon, there was only one generated in June, the least in June on record. What’s more, the decreased precipitation and higher temperature worsened the drought condition in the northern part of China.
文章编号:     中图分类号:P448,P458    文献标志码:
基金项目:国家自然科学基金项目(U2142207)资助
引用文本:
刘一,马杰,李勇,胡莹莹,2023.2023年6月大气环流和天气分析[J].气象,49(9):1149-1156.
LIU Yi,MA Jie,LI Yong,HU Yingying,2023.Analysis of the June 2023 Atmospheric Circulation and Weather[J].Meteor Mon,49(9):1149-1156.