基于溃变理论的V-3θ图在贵州3次转折性天气中的应用  

Application of V-3θChart Based on Collapse Theory in Three Transitional Weather Processes in Guizhou

作　　者：顾天红 朱育雷 李彦霖 李力 武正敏 GU Tianhong;ZHU Yulei;LI Yanlin;LI Li;WU Zhengmin(Guizhou Meteorological Observatory,Guiyang 550002,China;Zunyi Meteorological Bureau,Zunyi 563000,China)

机构地区：[1]贵州省气象台,贵州贵阳550002 [2]贵州省遵义市气象局,贵州遵义563000

出　　处：《中低纬山地气象》2021年第4期1-7,共7页Mid-low Latitude Mountain Meteorology

基　　金：贵州省气象局科研业务项目:V-3θ图在贵州冰雹天气中的特征检验及应用初探。

摘　　要：利用常规观测资料和MICAPS 4版的V-3θ图,选取了2018年贵州冰雹、暴雨和大雪3次转折性天气过程,对V-3θ图进行了特征检验和简单应用,得出结论如下:①V-3θ图能很好反映大气能量结构变化,其典型特征均有较好体现:超低温结构、顺滚流、θ线多折拐等;②不同转折性天气其V-3θ图特征也有所不同:冰雹天气的滚流效应最突出,暴雨、大雪依次减弱;暴雨和大雪对θsed与θ^(*)线准平行且近重合要求更高;而冰雹天气过程对对流层顶出现深厚超低温结构更为敏感;③当环流形势较弱,常规天气分析难以判断转折性天气时,可利用V-3θ图特征进行辅助预报。Using conventional observational data and the V-3θchart that comes with MICAPS 4 version,we selected three times of turning weather in Guizhou including hail,heavy rain and heavy snow,and carried out feature inspection and simple application on the V-3θchart,and the conclusions are as follows:①The V-3θchart can well reflect the changes in the energy structure of the atmosphere,and its typical characteristics are well reflected:ultra-low temperature structure,tumble flow,and multiple bending of theθline;②V-3θin different turning weather,the characteristics of the map are also different:the tumble effect of hail weather is the most prominent,with heavy rain and heavy snow sequentially weakening;heavy rain and heavy snow have higher requirements for theθsed andθ^(*)lines to be quasi-parallel and close to coincidence;while the hail weather process has a greater impact on the appearance of deep and ultra-low temperature structures in the troposphere.It is sensitive;③When the circulation situation is weak and it is difficult to judge the turning weather by conventional weather analysis,the V-3θchart feature can be used for auxiliary forecasting.

关 键 词：V-3Θ图 大气能量结构 转折性天气 预报应用 

分 类 号：P456.9[天文地球—大气科学及气象学]