气象2024，Vol.50Issue(3)：387-392,6.DOI:10.7519/j.issn.1000-0526.2024.022601
2023年12月大气环流和天气分析
Analysis of the December 2023 Atmospheric Circulation and Weather
摘要
Abstract
The main characteristics of the general atmospheric circulation in December 2023 are as follows.There were several polar vortex centers in the Northern Hemisphere.The atmospheric circulation presen-ted a great meridionality in mid-latitudes in Eurasia.The East Asian trough was stronger,and the sub-tropical high ridge in the Western Pacific Ocean was also abnormally stronger this month.The monthly mean precipitation(12.2 mm)over China was 2.5％more than normal(11.9 mm),and the monthly average temperature was-2.6℃,which is 0.4℃ above that in the same period of normal years.Totally,there were six cold air processes,one sand-dust weather process and one large-scale fog-haze event repor-ted this month.In particular,the 13-16 December intense cold wave that was encountered in most parts of China heavily was featured with wide influence range,large cooling range and remarkable low tempera-ture extremes.关键词
大气环流/冷空气/沙尘/雾-霾Key words
atmospheric circulation/cold air/sand-dust/fog-haze分类
天文与地球科学引用本文复制引用
徐冉,桂海林,尤媛,王继康..2023年12月大气环流和天气分析[J].气象,2024,50(3):387-392,6.基金项目
国家重点研发计划(2022YFC3701205)和中国气象局复盘总结专项(FPZJ2024-164)共同资助 （2022YFC3701205）
