摘要
以武汉多普勒天气雷达(CINRAD/SA)及其有效探测范围内的气象站和水文站的雨量观测资料为基础,运用集对分析方法确定雷达估算降雨场的Z-I关系,通过对雷达估算降雨和雨量站网格插值降雨进行对比分析,发现雷达估算降雨的精度要高于雨量站对网格降雨插值的精度,随着与被插值网格距离的增加,插值的误差随之增大。
Based on the observational data of doppler weather radar in Wuhan and its coverage of weather stations and hydrological stations,the method of set pare analysis is used to determined the Z-I relationship,then the QPE is compared with the grid interpolation of rainfall station.The precision of the QPE is higher than the grid interpolation of rainfall station according to the calculation.The main reason is the farther away from the interpolation grid,the higher Interpolation error is.The best way of reducing error is to control the scope of interpolation and use a reasonable amount of rainfall stations to interpolate.
出处
《水利科技与经济》
2010年第9期996-999,共4页
Water Conservancy Science and Technology and Economy
基金
科技部公益研究项目(2005DBI3J101)
公益性行业专项(GYHY200806002)
湖北省科技攻关计划(2007AA301B57)
中国气象局武汉暴雨研究所暴雨研究科研业务项目(1014)
