CAJ | 학술논문

文章利用2007—2010年中国2447个站点的逐小时降水观测数据对同期CMORPH 和TRMM 3B42卫星降水估计产品进行了检验和评估。经过对比分析得出：CMORPH 和TRMM 3B42卫星降水资料与地面台站资料的日平均降水量空间分布具有较好的相似性，3 h降水量的相关系数在大部分地区分别在0．5和0．4以上；偏差均在±0．25 mm 之间，但CMOR-PH 存在显著的南北差异；平均绝对误差、相对误差和均方根误差均存在明显的季节周期性变化；两种卫星资料能够较好反映我国大部分区域夏季降水日变化特征，但在部分地区存在大的偏差；CMORPH 和 TRMM 3B42总空演率分别为7．23％和2．63％，总漏演率分别为3．25％和5．50％。
문장이용2007—2010년중국2447개참점적축소시강수관측수거대동기CMORPH 화TRMM 3B42위성강수고계산품진행료검험화평고。경과대비분석득출：CMORPH 화TRMM 3B42위성강수자료여지면태참자료적일평균강수량공간분포구유교호적상사성，3 h강수량적상관계수재대부분지구분별재0．5화0．4이상；편차균재±0．25 mm 지간，단CMOR-PH 존재현저적남북차이；평균절대오차、상대오차화균방근오차균존재명현적계절주기성변화；량충위성자료능구교호반영아국대부분구역하계강수일변화특정，단재부분지구존재대적편차；CMORPH 화 TRMM 3B42총공연솔분별위7．23％화2．63％，총루연솔분별위3．25％화5．50％。
The hourly precipitation observation data from 2447 rain gauge records are used to verify and evaluate the satellite precipitation estimation products of Climate Prediction Center Morphing Technique (CMORPH)and Tropical Rainfall Measuring Mission (TRMM)3B42 during 2007-2010 in China.The results show that the two satellite precipitation data are similar to ground gain gauge data in revealing the spatial patterns of daily mean precipitation amount.The pattern correlation coefficients of 3 h rainfall amount are over 0.5 and 0.4 in most areas,respectively.Bias of two satellite precipitation products are both between the positive and negative 0.25 mm,but there are significant difference between the north and the south.And the mean absolute error,relative error and root-mean-square error all have a significant seasonal periodic variations.The two satellite precipitation products can reflect the summer rainfall diurnal variation well in most parts of China,but there are also clear distinctions in some areas.The overall vacan-cy retrieval rate of CMORPH and TRMM 3B42 products are 7.23% and 2.63%,overall missing retrieval rate are 3.25% and 5.5%,respectively.