飑线中尺度三维精细结构的双多普勒雷达研究

项目名称： 飑线中尺度三维精细结构的双多普勒雷达研究

项目编号： No.41275041

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 周海光

作者单位： 中国气象科学研究院

项目金额： 82万元

中文摘要： 利用已经收集到的最佳双多普勒天气雷达观测网探测到的多个飑线天气的双雷达时间同步体扫数据(北京双雷达、南京-马鞍山双雷达、广州-深圳双雷达),及2010年-项目在研四年期间南京-马鞍山、广州-深圳、宁波-舟山、上海双雷达等观测的飑线数据,进行双多普勒雷达三维风场反演；然后结合自动气象站加密数据、探空资料、气象卫星资料及NCEP资料，综合使用单雷达回波强度分析、径向速度分析、组网雷达三维拼图技术,重点使用双雷达三维风场反演数据研究飑线中尺度三维精细结构和演变特征。研究飑线在形成、发展、减弱、消亡整个生命史过程中结构及演变特征、降水和大风的时空分布等,飑线内部冰雹、强降水等强对流系统的结构,飑线系统三维气流分布、演变特征及其与飑线发展的关系;研究飑线成熟阶段对流区、后部层状云区入流和出流的空间分布特征;对比分析华北、江淮和华南飑线三维结构差异,建立华北、江淮和华南飑线中尺度精细动力结构模型。

中文关键词： 飑线；双多普勒天气雷达；风场反演；三维结构；结构模型

英文摘要： This project investigates the fine structure of the squall line with the dual-Doppler radar retrieval three-dimensional wind field. The optimal dual-Doppler radar networks synchronous observation data would been employed to retrieve the 3D wind. Some squall line storms synchronous observation data detected by the dual-Doppler radar networks from 2007 to 2010,include Bejing dual-Doppler, Nanjing-Maanshan dual-Doppler, and Guangzhou-Shenzhen dual-Doppler,have been collected. We will also collect the squall line data detected by the dual-Doppler, inlcude Nanjing-Maanshan, Guangzhou-Shenzhen,Ningbo-Zhoushan,and Shanghai dual-Doppler from 2010 to 2016. Firstly, we will make use of the dual-Doppler radar 3D wind retrieval technique to retrieve the 3D wind field of the squall line system. Then, the automatic weather station observation data, the sounding data,the meteorological satellite observation data, the NCEP reanalysis data, and the dual-Doppler radar retrieval 3D wind fields are employed synthetically to study the fine 3D structure of the squall line system. The structure evolvement characteristic of the squall line in its whole life will be studied. The 3D structure of the convective systems, such as the hailstone and the heavy precipitation, in the squall line would be researched too. The relationship between

英文关键词： squall line；dual-Doppler weather radar；wind retrieval；three dimensional structure；structure model