近30年青海省东北部大到暴雪天气机理研究  

Study on the Mechanism of Heavy to Blizzard Weather in Northeast Qinghai Province in the Recent 30 Years

作　　者：张婷华 彭毛青措 牛俊强 安海燕 Zhang Ting-hua(Xining Meteorological Bureau,Xining,Qinghai 810016)

机构地区：[1]青海省西宁市气象局,青海西宁810016 [2]青海省防灾减灾重点实验室,青海西宁810001 [3]中国人民解放军31668部队,青海西宁810000

出　　处：《农业灾害研究》2023年第8期151-153,共3页Journal of Agricultural Catastrophology

基　　金：青海省防灾减灾重点实验室开放基金(QFZ-2021-M24)。

摘　　要：利用常规气象观测资料,结合天气学诊断和统计学方法,分析青海省东北部1991—2020年大到暴雪天气的特征,结果表明:(1)大到暴雪天气主要发生在春季和秋季,大通出现大雪的次数最多,湟中发生暴雪的次数最多;(2)依据500 hPa环流形势,将大到暴雪天气形势分为蒙古低槽型、西高东低型、北脊南槽型、两低一高型、高原切变线型和南北槽叠加型;(3)发生大到暴雪天气时物理量场中的水汽条件、动力条件和水汽条件对大到暴雪有一定的指示意义。Using conventional meteorological observation data,combined with synoptic diagnosis and statistical methods,analyzed the characteristics of heavy to heavy snow weather in northeastern Qinghai Province from 1991 to 2020.The results showed that:(1) heavy to heavy snow weather mainly occurs in spring and autumn,with the largest number of heavy snow occurrences in Datong and the largest number of heavy snow occurrences in Huangzhong;(2) According to the 500 hPa circulation situation,the heavy snow weather situation can be divided into Mongolia low trough type,west high east low trough type,north ridge south trough type,two low one high type,plateau shear line type,and north south trough superposition type;(3) The water vapor conditions,dynamic conditions,and water vapor conditions in the physical quantity field during heavy to heavy snow events have certain indicative significance for heavy to heavy snow events.

关 键 词：大到暴雪天气 环流形势 探空特征 物理量 

分 类 号：P426.634[天文地球—大气科学及气象学]