气象2025，Vol.51Issue(7)：891-900,10.DOI:10.7519/j.issn.1000-0526.2025.063001
2025年4月大气环流和天气分析
Analysis of the April 2025 Atmospheric Circulation and Weather
摘要
Abstract
In April 2025,the Northern Hemisphere polar vortex exhibited a monopole with an eccentric dis-tribution and was stronger than normal.Over the Eurasian mid-to-high latitudes,the circulation pattern featured a pattern of"two troughs and one ridge".The ridge between the East European trough and the East Asian trough was broad and flat.The national average temperature across the whole China was 13℃,which is 1.5℃ higher than the climatological average(11.5℃)in the same period.The national average precipitation was 38.9 mm,11％less than the climatological average(43.6 mm).The main precipitation areas were located in Jiangnan and the northern parts of South China.The precipitation of Eastern Inner Mongolia and Northeast China was above the normal level.During this month,there were five major sand-dust processes,two cold air,three heavy rainfall processes,and four severe convective weather processes.Notably,the strong sandstorm process from 10 to 14 April was characterized by its long duration,high intensity and extensive dust coverage.This event was also accompanied by widespread strong winds and a significant drop in temperature.关键词
大气环流/强冷空气/大风/沙尘/强对流Key words
atmospheric circulation/strong cold air/gale/sand-dust/severe convection分类
天文与地球科学引用本文复制引用
胡莹莹,牛若芸,黄威..2025年4月大气环流和天气分析[J].气象,2025,51(7):891-900,10.基金项目
国家自然科学基金联合基金项目(U2142207)和国家气象中心青年基金项目(Q202403)共同资助 （U2142207）
