气象学报2012，Vol.70Issue(5)：1128-1136,9.
基于雷达反射率反演降水率的一维+三维变分同化研究及试验
Study of the "1D+3D var" assimilation of the rain rate retrieved from radar reflectivity and its experiments
摘要
Abstract
The one dimensional variational data assimilation system (ID var) , with ability of assimilating the rain rate retrieved from radar reflectivity, is established by utilizing two linearized physical parameterizations of large-scale condensation and convection as the observational operator. A realistic water vapor profile, obtained by ID var, is assimilated by the three dimensional data assimilation system (3D var) to produce a better quality of water vapor field for high resolution models. To preliminarily estimate the impact of the 1D + 3D var assimilation of the rain rate upon short-term precipitation forecast, a case study of the severe rainfall occurred on 9 June 2010 and one month experiment (May 2011) are performed, by applying the "1D+ 3D var" to get the realistic water vapor profile and a better initial condition for fine resolution models.关键词
雷达反射率/水汽廓线/一维+三维变分同化Key words
Radar reflectivity/Vertical profile of water vapor/1D+3D var分类
天文与地球科学引用本文复制引用
张诚忠,薛纪善,张林,万齐林..基于雷达反射率反演降水率的一维+三维变分同化研究及试验[J].气象学报,2012,70(5):1128-1136,9.基金项目
国家自然科学基金项目(41075040、41075083)、公益性行业气象专项(GYHY201006016、GYHY201206010)、2011年气象关键技术集成与应用项目. （41075040、41075083）
