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投稿时间:2025-09-12 修订日期:2025-10-14
            投稿时间:2025-09-12 修订日期:2025-10-14
             中文摘要:  2025年7月,北半球中高纬度呈多波型,西西伯利亚平原至日本受高度场正距平控制,西太平洋副热带高压偏北偏强。全国平均气温为23.6℃,较常年同期(22.1℃)偏高1.5℃,为1961年以来最高。高温日数为6.1 d,较常年同期(3.6 d)偏多2.5 d,为1961年以来同期最多。全国平均降水量为115.5 mm,较常年同期(121.7 mm )偏少5.1%。月内有3个台风活动;出现6次暴雨过程、3次高温过程和9次强对流天气过程,多地极端天气频发。本文简要分析了第6号台风“韦帕”引发的强降水过程以及23—29日华北极端降水过程的成因及预报难点。
            
            
            中文关键词: 副热带高压,极端天气,暴雨,台风“韦帕”
            
            
            Abstract:The main characteristics of the general circulation in July 2025 are that the mid-to-high latitudes of the Northern Hemisphere exhibited a multi-wave pattern, with positive geopotential height anomalies dominating the region from the West Siberian Plain to Japan. The western Pacific subtropical high was located farther north and was significantly stronger than usual. The national average temperature reached 23.6℃, which is 1.5℃ higher than the climatological average of 22.1℃, marking the highest value since 1961. The number of high-temperature days was 6.1 days, exceeding the climatological average of 3.6 days by 2.5 days, also the highest since 1961. The national average precipitation was 115.5 mm, 5.1% lower than the climatological average of 121.7 mm. During the month, there occurred three typhoons, six heavy rainfall events, three high-temperature episodes and nine severe convective weather processes, which caused frequent extreme weather events across multiple regions. In addition, this article provides a brief analysis on the mechanisms and forecasting challenges associated with the heavy rainfall triggered by Typhoon Wipha, and also on the extreme precipitation event in North China from 23 to 29 July 2025.
            
            
            
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            基金项目:新疆暴雨山洪灾害气象风险预警技术研究创新团队(2024TSYCTD0005)资助
            
			
			| Author Name | Affiliation | 
| LI Zimu | National Meteorological Centre, Beijing 100081 | 
| SUN Jun | National Meteorological Centre, Beijing 100081 | 
				引用文本:
李子木,孙军,2025.2025年7月大气环流和天气分析——副高偏北偏强和极端天气频发[J].气象,51(10):1282-1292.
LI Zimu,SUN Jun,2025.Analysis of the July 2025 Atmospheric Circulation and Weather[J].Meteor Mon,51(10):1282-1292.
            
			
			
			李子木,孙军,2025.2025年7月大气环流和天气分析——副高偏北偏强和极端天气频发[J].气象,51(10):1282-1292.
LI Zimu,SUN Jun,2025.Analysis of the July 2025 Atmospheric Circulation and Weather[J].Meteor Mon,51(10):1282-1292.
 
			 
	    