探空资料在大冰雹判别中的应用

Application of sounding data in the identification of large hail

文章对2016—2019年贵州中西部地区20次不同类型的降雹过程探空资料进行分析,重点讨论了冰雹实际融化层高度对大冰雹产生的判别作用,结果发现:持续时间较长的多单体和超级单体引起的降雹过程更容易产生大冰雹,对流中高层的干入侵会大大降低冰雹融化层的高度,干球温度0℃层对应湿球温度0℃层高度的下降值与降雹粒径的对应性较好。

This paper analyzes the sounding data of 20 different types of hail processes in the central and western regions of Guizhou in 2016-2019,and discusses in particular the discriminant function of the actual height of the melting layer of hail on the occurrence of large hail.The results show that the hail process caused by long-lasting multi-monomer and super-monomer is more likely to produce large hail.The dry intrusion in the middle and upper layers of the convection will greatly reduce the height of the melting layer of the hail.The decrease of the height of the dry sphere temperature 0℃layer corresponding to the wet sphere temperature 0℃layer is well corresponding to the hail particle size.