气象Issue(1)：34-43,10.DOI:10.7519/j.issn.1000-0526.2016.01.004
GRAPES 3Dvar 中雷达径向风同化改进观测算子的应用
Application of Advanced Observation Operator of Doppler Radar Radial Velocity Assimilation in GRAPES 3Dvar
摘要
Abstract
On the basis of GRAPES 3Dvar system,the insertion of pre-processed module and assimilation module for Doppler radar radial velocity assimilation are conducted (including traditional and advanced em-ulators respectively).In this paper,the rain case on 6 June 2014 is selected to perform the assimilation and prediction experiments using the GRAPES 3Dvar system after the accuracy test,analyzing the impact on the adjustment of initial conditions and precipitation simulations through different emulators.The results indicate that the mesoscale information increases after assimilating radar radial velocity.Moreover,by comprehensively analyzing the radial and tangential components,the results using the advanced emulator approach are closer to observation and reference wind fields compared with those using the traditional one. In addition,the accumulated precipitation result adopting the advanced emulator can better simulate the lo-cation and magnitude of precipitation and effectively restrain the virtual rainfall among all tests,the test scores also illustrate this conclusion.关键词
多普勒雷达/资料同化/观测算子/径向风/切向风Key words
Doppler radar/data assimilation/observation operator/radial velocity/tangential velocity分类
天文与地球科学引用本文复制引用
马昊,梁旭东,罗义,符巧..GRAPES 3Dvar 中雷达径向风同化改进观测算子的应用[J].气象,2016,(1):34-43,10.基金项目
国家重点基础研究发展计划（973计划）（2013CB430101）、国家科技支撑计划项目（2012BAC22B02）和中国气象局 GRAPES 模式专项共同资助 （）
