气象2018，Vol.44Issue(4)：538-547,10.DOI:10.7519/j.issn.1000-0526.2018.04.007
滑动时间窗长度对太行山区雷达反演降水的影响
Impact of Moving Time Window Size on Radar-Based Precipitation Estimation in Taihang Mountains
摘要
Abstract
Precise estimation of precipitation in Taihang Mountains is crucial for understanding water cycle and providing support for water management in Haihe River Basin.By using Doppler radar,this study de-veloped the Z-I relationships with different time windows (1-5h) in three counties in eastern side of Taihang Mountains using radar reflectivity (Z) and rain gauge data (I) from June to September during 2013-2014.By dividing the 45 precipitation events into three categories:Light,moderate and heavy,pre-cipitation was precisely estimated from different Z-I relationships under different categories.Take the rainfall event on 9 July 2013 as an example.It showed that (1) the errors of estimated precipitation from different time windows declined firstly,then rose up as the time windows moved from 1 h to 5 h,and the lowest error appeared in 2 h.(2) The 2 h Z-I relationship greatly improved the precision of moderate rain. (3) The estimation of heavy rain also improved when the 2 h Z-I relationship was applied to the rainfall event that happened on 9 July 2013.关键词
多普勒雷达/降水反演/Z-I关系/滑动时间窗Z-I算法/太行山区Key words
Doppler radar/precipitation estimation/Z-I relationship/moving time window method/Taihang Mountains分类
天文与地球科学引用本文复制引用
高烽,周新尧,孔凡超,杨永辉,郭迎春,孙强..滑动时间窗长度对太行山区雷达反演降水的影响[J].气象,2018,44(4):538-547,10.基金项目
国家自然科学基金项目(41671021)和河北省自然科学基金项目(D2015503016)共同资助 （41671021）
