黄石市2020年2月14-16日寒潮天气过程分析  

Analysis of Cold Wave Weather Process in Huangshi City From February 14 to 16, 2020

作　　者：潘梦莹 卫文芳 刘熠炎 童红梅 张新宜 吕灿九 PAN Meng-ying(Huangshi Mete�orological Bureau,Huangshi,Hubei 435002)

机构地区：[1]黄石市气象局,湖北黄石435002

出　　处：《农业灾害研究》2021年第4期50-53,共4页Journal of Agricultural Catastrophology

摘　　要：利用常规观测资料、雷达回波和卫星云图等资料,对2020年2月14—16日黄石地区出现的寒潮天气过程进行综合分析。结果表明:(1)此次寒潮天气过程范围广、持续时间长、降温幅度大、阵风强,天气现象复杂,伴有雷电、雨雪等天气;(2)本次过程强降温主要是由于前期基础气温高、强盛冷平流、辐射降温、降水蒸发及冰雪融化等因素造成的;(3)充足的水汽条件、较强的上升运动、一定的不稳定条件及合适的层结条件,有利于黄石市雨雪天气过程发生,当整层温度均低于0℃且存在逆温层时,有利于形成降雪;(4)大风的形成与强冷平流的入侵、气压梯度、变压梯度及高空动量下传有密切关系。Based on the conventional observation data,radar echo and satellite cloud images,the cold wave weather process in Huangshi area from February 14 to 16,2020 is analyzed comprehensively.The results show that:(1)the cold wave weather process has a wide range,long duration,large cooling range,strong gust,complex weather phenomenon,accompanied by lightning,rain and snow;(2)The strong cooling in this process is mainly caused by the high basic temperature,strong cold advection,radiation cooling,precipitation evaporation and snow melting;(3)Sufficient water vapor conditions,strong upward movement,certain unstable conditions and suitable stratification conditions are conducive to the occurrence of rain and snow weather in our city.When the temperature of the whole layer is lower than 0℃and there is an inversion layer,it is conducive to the formation of snowfall;(4)The formation of gale is closely related to the invasion of strong cold advection,pressure gradient,pressure gradient and momentum downward transmission.

关 键 词：寒潮 成因 强降温 大风 

分 类 号：S426[农业科学—植物保护]