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气象:2024,50(11):1409-1416
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2024年8月大气环流和天气分析
李潇濛,宋巧云,杨寅
(国家气象中心,北京 100081)
Analysis of August 2024 Atmospheric Circulation and Weather
LI Xiaomeng,SONG Qiaoyun,YANG Yin
(National Meteorological Centre, Beijing 100081)
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投稿时间:2024-09-27    修订日期:2024-10-23
中文摘要: 2024年8月大气环流主要特征是北半球极涡为偶极型分布,强度较常年同期偏强,欧亚大陆中高纬环流呈现“两槽两脊”型。西太平洋副热带高压较常年位置偏西偏北。8月,全国平均降水量为96.5 mm,较常年同期(107.1 mm)偏少9.9%;全国平均气温为22.6℃,与常年同期(21.1℃)相比偏高1.5℃。月内,全国高温日数异常偏多,南方地区高温天气持续,极端性强,长江中上游沿线气象干旱露头发展;全国出现5次暴雨过程,北方暴雨过程频繁,落区重叠度高,致灾性强;共有6个热带气旋在西北太平洋活动,南海海域无热带气旋生成或经过,也无台风登陆我国;强对流天气多发、散发,局地受灾严重。
Abstract:The main characteristics of the general atmospheric circulation in August 2024 are as follows. There were two polar vortex centers in the Northern Hemisphere and they were stronger than normal. The circulation at middle-high latitude of the Eurasia showed a two-trough and two-ridge pattern. The location of the western Pacific subtropical high was more westward and northward compared to that in normal years. In August, the monthly average precipitation in China was 96.5 mm, 9.9% lower than normal (107.1 mm), and the monthly average temperature was 22.6℃, higher than normal (21.1℃) by 1.5℃. During this month, the high temperature days were more than normal for the same period of the year. The continuous high temperature weather in southern China was highly extreme, and meteorological drought developed along the middle and upper reaches of the Yangtze River. Five torrential rain processes occurred in China, and rainstorm events appeared frequently in northern China, with high overlap of rainstorm-hit areas and strong disaster causing ability. There were six tropical cyclones active over the Northwest Pacific in August, and no tropical cyclones formed or passed through the South China Sea or landed in China. Severe convection events occurred frequently and dispersedly, causing localized serious damages.
文章编号:     中图分类号:P448,P458    文献标志码:
基金项目:国家自然科学基金气象联合基金项目(U2342219)资助
引用文本:
李潇濛,宋巧云,杨寅,2024.2024年8月大气环流和天气分析[J].气象,50(11):1409-1416.
LI Xiaomeng,SONG Qiaoyun,YANG Yin,2024.Analysis of August 2024 Atmospheric Circulation and Weather[J].Meteor Mon,50(11):1409-1416.