Evaluation of TRMM Summer Precipitation over Huai-River Basin in China
Evaluation of TRMM Summer Precipitation over Huai-River Basin in China
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中国淮河流域夏季降水TRMM评价
DOI：
10.4028/www.scientific.net/amr.726-731.3401
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发表时间：
2013-08
期刊：
影响因子：
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通讯作者：
Man Zhang, Chen Sheng, *Youcun Qi , Yi Yang
中科院分区：
文献类型：
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作者：
Man Zhang, Chen Sheng, *Youcun Qi , Yi Yang
在这项研究中，TRMM 3B 42估计的偏差和不确定性进行了调查，在淮河流域2010年夏季。以3B 42 RT、3B 42 V6和3B 42 V7三种TRMM产品与中国降水分析产品（CPAP）作对照，进行了交叉比较。研究发现，偏置的分布与地形密切相关，干偏置分布在丘陵/山地，湿偏置分布在平原地区。结果表明，这种偏差可能是由于TRMM算法不能区分降水类型的缺陷造成的。3B 42 V7产品在减少干湿偏差方面表现出最好的改进;它在夏季降水估计方面也表现出较小的不确定性。
In this study, the biases and uncertainty of TRMM 3B42 estimates are investigated over the Huai-River Basin during the summer season in 2010. TRMM products of 3B42RT, 3B42V6 and 3B42V7 are cross-compared to Chinese Precipitation Analyses Products (CPAP) as the reference. It is found that the distribution of bias is closely depend on the terrain with the dry bias locates at hills/mountains and wet bias lies on the plains area. It is concluded that the bias may be caused by the defect of TRMM algorithm which cannot discern different types of precipitation. 3B42V7 product shows the best improvement in reducing both wet and dry bias; it also appears small uncertainty on summer season precipitation estimate.