气象2025，Vol.51Issue(4)：508-516,9.DOI:10.7519/j.issn.1000-0526.2025.040701
2025年1月大气环流和天气分析
Analysis of the January 2025 Atmospheric Circulation and Weather
摘要
Abstract
The main characteristics of the general atmospheric circulation in January 2025 are as follows.The polar vortex in the Northern Hemisphere exhibited a dipole pattern,the East Asian trough was more eastward,and the southern branch trough was weaker.The monthly average precipitation(9.3 mm)over China was 30.1％less than the average value 13.3 mm in the same period of normal years.Moreover,the spatial distribution of precipitation was uneven,more in the north and less in the south of China.The monthly mean temperature was-3.3℃,which is 1.5℃ higher than in the same period of normal years(-4.8℃).Temperatures fluctuated significantly throughout the month,with one nationwide cold wave event and one large-scale persistent fog-haze weather event.The cold wave and snow-rain event from 23 to 27 was characterized by severe temperature drop,strong wind force,widespread rain and snow with sub-stantial accumulated precipitation,heavy snowfall and deep snow depth.As a result,many new weather records were built in many regions.关键词
东亚大槽/寒潮/暴雪/雾-霾Key words
East Asian trough/cold wave/snowstorm/fog-haze分类
天文与地球科学引用本文复制引用
何灵莉,符娇兰,任宏昌..2025年1月大气环流和天气分析[J].气象,2025,51(4):508-516,9.基金项目
国家气象中心青年基金项目(Q202402)资助 （Q202402）
