安徽农业科学2016，Vol.44Issue(14)：218-224,268,8.
利用高分辨率 DEM 数据提高雷达测雨精度的方法
Improvement of the Radar MeasurementA ccuracy of Rainfall with DEM Data
摘要
Abstract
With the data of high-resolution digital elevation model(DEM) and the height value at 0 ℃layer ,under the assuming condition of standard atmospheric refractive and in the consideration of the surrounding barrier layer and the bright band at 0 ℃,the distribution of elevation angle of seven radars and the detection range of quantitative precipitation in Hunan was calculated according to the radar volume scan mode VCP21 commonly used.The results showed that the radius of radar detection in Changsha,Changde,Yueyang,Huaihua,Shaoyang,Chenzhou, Yongzhou and Zhengzhou was177 .00,179.00,188.40,124.85,162.06,145.50and 144 .17 km,and the maximum detection range was in Yu-eyang and the minimum,Huaihua.In flooding season,the estimation of quantitative precipitation detection,which was from the radar network in Hunan province,could be basically used for the rain-monitoring in whole province based on the removal of the influence of the bright band at 0℃. The accuracy of quantitative precipitation estimation would be improved.关键词
定量估测降水/地形阻挡/雷达反射率因子/DEM 数据Key words
Estimation of quantitative precipitation/Terrain blockage/Radar reflectivity factor/DEM data分类
农业科技引用本文复制引用
尹忠海..利用高分辨率 DEM 数据提高雷达测雨精度的方法[J].安徽农业科学,2016,44(14):218-224,268,8.基金项目
湖南省气象局2015年度重点项目（XQKJ15 A001）。 （）
