气象与环境学报2012，Vol.28Issue(4)：38-42,5.
不同校准方法检验雷达定量估测降水的效果对比
Comparison on quantitative estimation of precipitation using radar based on different calibration methods
摘要
Abstract
Based on the observational data from the low-elevation angle radar and precipitation data from intensive automatic weather station,the local Z-I relationships were established by an optimization method according to precipitation feature and the different precipitation types.According to application test,the Z-I relationship of the cumulus clouds mixed precipitation type is more applicable.The results of precipitation estimated using six calibration methods were compared after the Z-I relationships have been modified specifically for Tianjin area.The results indicate that the errors from both the Z-I relationship calibration method and the maximum integrated method are large;they both overestimate rainfall.The estimation accuracy of the optimal interpolation method is the highest among the all methods,and its mean absolute error and root-mean-square error are the smallest.The correlation coefficient between the estimated rainfall from different methods and the observed rainfall are calculated,and it shows that the correlation between the estimated rainfall of variational calibration method and rain gauge rainfall is significant.To some extent,the rainfall is overestimated to light rain grade among the all methods.关键词
多普勒雷达/Z-I关系/校准方法/降水估测Key words
Doppler radar/Z-I relationship/Calibration method/Rainfall estimation分类
天文与地球科学引用本文复制引用
东高红,吕江津..不同校准方法检验雷达定量估测降水的效果对比[J].气象与环境学报,2012,28(4):38-42,5.基金项目
国家科技支撑计划重点项目“城市群高影响天气预报系统的集成和业务示范”（2008BAC37B05）、（2008BAC37B01）共同资助 （）
