气象2017，Vol.43Issue(9)：1152-1159,8.DOI:10.7519/j.issn.1000-0526.2017.09.012
水平距离和海拔高度对雷达估测降水影响及订正
Influence of Horizontal Distance and Altitude on Radar Rainfall Estimation and Its Correction
摘要
Abstract
Based on 77 rainfall processes in Shijiazhuang from 2006 to 2008,this paper analyzes how quantitative precipitation estimation (QPE) is influenced by the altitude and horizontal distance from radar stations.Meanwhile,the optimum height of reflectivity factor for radar QPE and the values of distance and height corrections are suggested.The effect of QPE using the empirical formula and the optimization method are contrasted with and without distance and height corrections in four situations,and a QPE optimum scheme is designed according to the comparison results.No correction but only optimization method is adopted when the reflectivity is less than 30 dBz.Otherwise,distance and height corrections are performed firstly,and then optimization method is used in QPE.The results show that the proposed scheme has a good effect on heavy precipitation exceeding 10 mm · h-1 at single station,and on the process rainfall as well as on the estimation of regional precipitation.关键词
雷达估测降水/距离高度订正/最佳估测方案Key words
radar estimate precipitation/distance and height correction/optimum estimation scheme分类
天文与地球科学引用本文复制引用
王丽荣,王立荣..水平距离和海拔高度对雷达估测降水影响及订正[J].气象,2017,43(9):1152-1159,8.基金项目
国家自然科学基金项目(41375038)资助 （41375038）
