石河子地区夏季降雨过程探空资料和雷达产品特征分析  

Analysis on Features of Sounding and Radar Archive for Rainfall Cases During Summer in Shihezi Area

作　　者：刘晓初 徐腊梅 李潇潇 赵胡笳[3] LIU Xiaochu;XU Lamei;LI Xiaoxiao;ZHAO Hujia(Dalian Meteorological Observatory,Dalian Liaoning 116001;Shihezi Meteorological Observatory,Shihezi Xinjinag 832000;Institute of Atmospheric Environment,CMA,Shenyang Liaoning 110016)

机构地区：[1]大连市气象台,辽宁大连116001 [2]石河子气象台,新疆石河子832000 [3]中国气象局沈阳大气环境研究所,辽宁沈阳110116

出　　处：《安徽农学通报》2023年第2期160-167,共8页Anhui Agricultural Science Bulletin

基　　金：中国气象局沈阳大气环境研究所重点项目(2021SYIAEZD3);龙凤山科技野外试验平台开放项目(LFS202107)。

摘　　要：本文利用2018—2020年6—8月克拉玛依探空资料和石河子天气雷达资料,对发生在石河子地区4个业务观测站的53次降雨过程进行中尺度分析,研究石河子地区夏季不同落区和量级降雨过程的环境潜势和雷达回波特征。结果表明,①大多数降雨过程量级为小雨,并且发生在傍晚到夜间;②K指数、850和500 hPa温差是对流降雨可靠指示参数;③600 hPa附近湿层为当地独特指示参数;④短时强降雨通常不伴随冰雹和雷暴大风;⑤1 h降雨估测产品可靠度较高;研究结果对石河子地区夏季降雨预报预警有指示作用。This paper examines 53 rainfall cases occurred during June and August of 2018-2020 in Shihezi area by using conventional observation data,sounding data at Karamay and weather radar data.Environmental and radar product features are presented in terms of different rainfall amount and areas impacted.The results indicate:①Most cases are light rain cases and occurred during sunset and night time;②K-index,temperature difference between 850 hPa and 500 hPa are reliable indicators for convective precipitation;③Saturation status at approximately 600 hPa is a locally-reliable indicator for moist convection;④Short-time heavy rainfall cases are largely not associated with hail and strong wind;⑤One-hour rainfall estimation product is usable.This work helps to improve convection warning for Shihezi area during summer.

关 键 词：夏季降雨 探空资料 雷达产品 中尺度分析 石河子地区 

分 类 号：X513[环境科学与工程—环境工程]