2022年1月1日寒潮天气过程分析  

Analysis of Cold Wave Weather Process on January 1,2022

作　　者：贺永平 李悦 冶生霞 HE Yongping(Yushu prefecture Meteorological Bureau of Qinghai Province,Yushu,Qinghai 815000)

机构地区：[1]青海省玉树州气象局,青海玉树815000 [2]青海省海南州气象局,青海共和813000

出　　处：《农业灾害研究》2022年第5期67-69,共3页Journal of Agricultural Catastrophology

摘　　要：2021年12月31—2022年1月1日,玉树地区出现一次低槽东移型寒潮天气过程,并伴有大范围大风天气。通过对常规观测资料分析,此次为低槽东移型寒潮天气过程。玉树地区受巴尔喀什湖至贝加尔湖低槽东移并分裂下滑短波槽影响,低涡伴随强的冷中心;过程前期冷空气在寒潮关键区有堆积,地面冷高压不断分裂小高压南下;强冷平流和辐射降温也对玉树地区强降温产生较大影响。此次寒潮天气过程受高空冷平流及动量下传影响,出现大范围大风天气,但由于动力条件和水汽条件较差,降水过程不明显。From December 31,2021 to January 1,2022,a cold wave process of low trough moving eastward occurred in Yushu area,accompanied by large-scale gale weather.Based on the analysis of conventional observation data,there was a low trough eastward cold wave weather process.Yushu area was affected by the eastward movement and splitting of the low trough from Balkash lake to Baikal Lake,and the low vortex was accompanied by a strong cold center;In the early stage of the process,the cold air accumulated in the key area of the cold wave,the ground cold high pressure continued to split,and the small high pressure went south;Strong cold advection and radiation cooling also have a great impact on strong cooling in Yushu area.The cold wave weather process was affected by high-altitude cold advection and momentum downward transmission,resulting in large-scale gale weather.However,due to poor power and water vapor conditions,the precipitation process was not obvious.

关 键 词：寒潮 强降温 成因分析 

分 类 号：P458.122[天文地球—大气科学及气象学]