黔南州冰雹天气环流特征分析
Analysis of Circulation Characteristics of Hail Weather in Qiannan
黄麟媛 1罗喜平 2罗雄 3赵杰 1莫乙冬1
作者信息
- 1. 贵州省黔南布依族苗族自治州气象局,贵州 都匀 558000
- 2. 贵州省气候中心,贵州 贵阳 550002
- 3. 贵州省气象台,贵州 贵阳 550002
- 折叠
摘要
[目的]为了建立黔南地区冰雹发生前天气背景流型配置和T-logP图形态本地化天气概念模型.[方法]选取2006-2022年黔南30次降雹事件,运用天气学分析方法对常规高空、地面气象资料进行研究分析.[结果]以地面流型为主、高低空流型为辅,黔南地区冰雹事件发生前天气类型可分为热低压辐合型、高架雷暴型和冷锋低槽(切变)型3类.[结论]3类天气分型特征如下:(1)热低压辐合型降雹高频次区域为黔南中北部,高架雷暴型降雹高频次区域为黔南中部,冷锋低槽(切变)型降雹高频次区域为黔南中南部;(2)T-logP图形态共有4种,分别为漏斗无梭形、无漏斗梭形、小漏斗梭形、大漏斗梭形,热低压辐合型以大漏斗梭形为主,高架雷暴型以漏斗无梭形为主,冷锋低槽(切变)型以无漏斗梭形为主.
Abstract
Based on 30 hail events in Qiannan Prefecture from 2006 to 2022,this paper analyzes the corresponding conventional upper-air and surface meteorological data by means of synoptic analysis method to establish a localized weather concept model regarding the configuration of weather background flow types and T-logP patterns prior to hail occurrence in Qiannan Prefecture.The findings indicate that the synoptic patterns preceding hail events in Qiannan Prefecture can be categorized into three types:thermal low-pressure convergence type,elevated thunderstorm type,and cold-front low-trough(shear)type.The surface flow pattern is dominant,supplemented by high and low air flow patterns.The characteristics of the three types of synoptic patterns are as follows:(1)The central and northern parts of Qiannan Prefecture exhibits a higher frequency of hail occurrences under the thermal low-pressure convergence type,the central part tends to have more frequent hail events under the elevated thunderstorm type,and the central and southern parts encounter increased hail frequencies under the cold-front low-trough(shear)type.(2)There are four T-logP patterns,including funnel-free shuttle pattern,no funnel shuttle pattern,small funnel shuttle pattern,and large funnel shuttle pattern.The thermal low-pressure convergence type is primarily featured with a large funnel shuttle pattern,the elevated thunderstorm type with a funnel-free shuttle pattern,and the cold-front low-trough(shear)type with a no funnel shuttle pattern.
关键词
冰雹/天气环流/T-logP图Key words
hail/synoptic circulation/T-logP引用本文复制引用
基金项目
贵州省气象局研究型业务关键技术攻关团队(GGTD-202208)
贵州省科技计划项目(黔科合支撑[2022]一般206)
贵州省科技计划项目(黔科合支撑[2023]一般194)
出版年
2024
NETL
NSTL
万方数据