鄂尔多斯市2024年首次特强寒潮、降雪过程与模式检验  

Analysis and model verification of the first severe cold wave and snowfall process in Ordos City in 2024

作　　者：李昊宇 LI Haoyu(Ordos Meteorological Bureau,Ordos 017010,China)

机构地区：[1]鄂尔多斯市气象局,内蒙古鄂尔多斯017010

出　　处：《黑龙江环境通报》2024年第10期24-26,共3页Heilongjiang Environmental Journal

摘　　要：本文利用常规观测资料对2024年1月18日至21日鄂尔多斯市出现的中到大雪、强寒潮天气过程进行分析发现:本次天气过程降雪范围广、降温幅度剧烈,达到特强寒潮,有一定的极端性。整个时段对流层低层气温均在0℃以下,过程相态为雪为主,产生中到大雪。20日高空横槽转竖东移,冷高压强度为1075hPa,异常偏强,形成一次特强寒潮。主流模式预报对北部冷高压主体强度预报偏弱,对最大降温幅度存在明显低估。By using conventional observation data,the weather process of moderate to heavy snowfall and strong cold wave that occurred in Ordos City from January 18 to 21,2024 was analyzed.It was found that this weather process had a wide range of snowfall and a drastic temperature drop,reaching an exceptionally severe cold wave with certain extremity.The temperature in the lower troposphere was below 0°C throughout the period,with snow as the main phase,resulting in moderate to heavy snowfall.On January 20,the high-altitude transverse trough turned vertical and moved eastward,with the cold high-pressure intensity reaching 1075hPa,which was exceptionally strong,forming an exceptionally severe cold wave.The mainstream model forecasts underestimated the intensity of the northern cold high-pressure body and the maximum temperature drop.

关 键 词：降雪 特强寒潮 极端性 模式检验 

分 类 号：P425[天文地球—大气科学及气象学]