WRF模式云微物理过程对三峡库区降水模拟的影响  

Impacts of Cloud Micro Physical Process on Precipitation of WRF Model in Three Gorges Reservoir Area

作　　者：王婷婷[1,2] 周建中[1,2] 曾小凡[1,2] 贾梦[1,2] 

机构地区：[1]华中科技大学水电与数字化工程学院,湖北武汉430074 [2]华中科技大学数字流域科学与技术湖北省重点实验室,湖北武汉430074

出　　处：《水电能源科学》2013年第6期17-20,共4页Water Resources and Power

基　　金：国家自然科学基金资助重点项目(51239004);水利部公益性行业科研专项基金资助项目(201001080);湖北省自然科学基金资助项目(2012FFB02206);华中科技大学国家级大学生科技创新训练基金资助项目

摘　　要：以三峡库区为研究区,针对库区发生的一次典型降水过程,对中尺度天气模式WRF在五种不同云微物理过程参数化方案下的三峡库区降水模拟进行分析,并运用同期降水资料评估不同云微物理方案对三峡库区降水的模拟效果,以优选数值天气模式中的云微物理方案。结果表明,WRF模式下不同云微物理方案模拟的降水差异较明显,WSM3类简单冰方案和Ferrier(new Eta)微物理方案在面平均降水量、降水分布等指标上能更好地反映实况,而WSM5类方案的模拟结果与实测值差异较大,选择合适的云微物理过程参数化方案对WRF模式能提供较好的降水模拟结果。Taking Three Gorges Reservoir Area as study object,a typical rainfall event in the Three Gorges Reservoir Area is selected to analyze precipitation simulation of five different cloud micro physical process schemes by applying the meso-scale weather model WRF.And then the observation precipitation data during the same period are used to evaluate the simulated precipitation spatial characteristics of five different cloud micro physical process schemes of the WRF model.The results show that the WRF model with optimized cloud micro physical process schemes has good applicability in the Three Gorges Reservoir Area;the WSM3 simple ice scheme and Ferrier（new Eta） micro physical scheme have advantages over other cloud micro physical process schemes for the average areal rainfall and precipitation distribution in the Three Gorges Reservoir Area;it has large difference between the simulation effect of WSM5 scheme and the observed values.

关 键 词：WRF模式 三峡库区 云微物理过程 降水模拟 

分 类 号：TV124[水利工程—水文学及水资源]