2023年滇東北一次強(qiáng)風(fēng)暴過程雙偏振雷達(dá)觀測分析

打開文本圖片集

摘要 此次過程主要由500 hPa短波槽和700 hPa切變線共同影響造成，經(jīng)訂正后的CAPE值較大，伴隨前期高溫晴熱天氣，具備能量、動力、水汽條件，0 ℃層和 -20 ℃層高度適宜冰雹的發(fā)展。從風(fēng)暴發(fā)展的強(qiáng)度ZH、速度V、雙偏振參量ZDR、KDP、CC分析了強(qiáng)風(fēng)暴發(fā)展過程的水平和垂直參數(shù)。

關(guān)鍵詞 雷達(dá)；強(qiáng)風(fēng)暴；冰雹；雙偏振

中圖分類號：P412.25 文獻(xiàn)標(biāo)識碼：B 文章編號：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

冰雹災(zāi)害是一種季節(jié)性明顯、局地性強(qiáng)、突發(fā)性強(qiáng)、持續(xù)時(shí)間短和具有明顯陣性特征的氣象災(zāi)害，是云南省重要的災(zāi)害性天氣之一。（剩余4619字）