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2023年滇东北一次强风暴过程双偏振雷达观测分析


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摘要 此次过程主要由500 hPa短波槽和700 hPa切变线共同影响造成,经订正后的CAPE值較大,伴随前期高温晴热天气,具备能量、动力、水汽条件,0 ℃层和 -20 ℃层高度适宜冰雹的发展。从风暴发展的强度ZH、速度V、双偏振参量ZDR、KDP、CC分析了强风暴发展过程的水平和垂直参数。

关键词 雷达;强风暴;冰雹;双偏振

中图分类号:P412.25 文献标识码:B 文章编号:2095–3305(2023)12–0-03

Observation and Analysis of A Strong Storm Process in Northeast Yunnan in 2023 by Dual Polarization Radar

Yuan Xing-hong et al(Zhaotong Mete-

orological Bureau, Zhaotong, Yunnan 657000)

Abstract This process is mainly caused by the combined influence of 500 hPa shortwave trough and 700 hPa shear line. After correction, the CAPE value is relatively high, accompanied by high temperature and sunny weather in the early stage, with energy, power, and water vapor conditions. The 0 ℃ and -20 ℃ layers are suitable for the development of hail. The horizontal and vertical parameters of the development process of strong storms were analyzed from the intensity ZH, velocity v, polarization parameters ZDR, KDP, and R2 of storm development.

Key words Radar; Strong storm; Hail; Bipolarization

冰雹灾害是一种季节性明显、局地性强、突发性强、持续时间短和具有明显阵性特征的气象灾害,是云南省重要的灾害性天气之一。(剩余4619字)

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