一次冰雹过程的多普勒雷达资料的风场反演与分析

Wind Field Retrieve of a Hail Event Using Simple Adjoint Method

采用改进的简化伴随模式对单站多普勒资料进行三维风场反演。选取2005年4月25日发生在湖北京山的冰雹过程,利用武汉新一代天气雷达(CINRAD/SA)的原始资料进行风场反演,并与目前实际业务中使用的冰雹预报方法进行比较,探索其用于实际冰雹业务预报的可能性。结果表明:运用该方法反演的三维风场能描述冰雹的发生发展过程特点;对于冰雹这种局地性强、发展时间短的剧烈天气过程,该风场反演方法可作为一种小尺度天气预报分析的辅助手段。

The improved Simple Adjiont Method（SA） advanced by Xu Qin et al.is adopted to retrieve 3-dimensional wind field from single Doppler radar data.The hail event occurred in Jingshan county,Hubei province in Apr.25th,2005 is selected as the sample.Source data from NEXRAD in Wuhan（CINRAD/SA） is used to retrieve wind field.This SA method is compared with the operational hail forecasting method used now,and the probability of such SA method to be used in operational hail forecasting is analyzed.Results show that the 3-Dimension wind field retrieved by this method could describe the development feature of hail event.For such local short-time severe weather event as hail,this SA method may serve as an assistant measure for micro-scale weather analysis.