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Hydrological assessment of TRMM rainfall data over Yangtze River Basin

ISSN号：1007-6301
期刊名称：《地理科学进展》
时间：0
分类：P334.92[天文地球—水文科学;水利工程—水文学及水资源;天文地球—地球物理学] P427.3[天文地球—大气科学及气象学]
作者机构：[1]State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, P. R. China, [2]College of Hydrology and Water Resources, Hohai University, Nanjing 210098, P. R. China, [3]State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, P. R. China
相关基金：This work was supported by the National Basic Research Program of China （the 973 Program, Grant No. 2010CB951101）, the National Natural Science Foundation of China （Grants No. 50979022 and 50679018）, the Program for Changjiang Scholars and Innovative Research Teams in Universities （Grant No. IRT0717）, the Special Fund of the State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering of Hohai University （Grant No. 1069-50986312）, and the Open Fund Approval of the State Key Laboratory of Hydraulics and Mountain River En~ineerin~ of Sichuan University （Grant No. SKLH-OF-0807）.

作者： Huang-he GU[1,2], Zhong-bo YU[1,2], Chuan-guo YANG[1,2], Qin JU[1,2], Bao-hong LU[1,2], Chuan LIANG[3]

关键词：分布式水文模型, TRMM卫星, 降雨强度, 长江流域, 后评估, 遥感观测, 雨量资料, 循环模拟, Tropical Rainfall Measuring Mission （TRMM）, satellite rainfall product, hydrological simulation, distributed hydrological model,＂ Yangtze River Basin

中文摘要：

高质量的降雨信息在陆地表面上为流量和水周期过程的精确模拟是批评的。因为降雨的高时间、空间的可变性，在 situ，降雨监视在地区性、全球的规模有一个很有限的实用程序。作为向克服这个问题的步，因为他们测量的全球可获得性和频率，微波遥感观察能被用来检索时间、空间的降雨范围。这份报纸探讨在集水上的遥感降雨估计是否能在分布式的水文学模型被用于水平衡计算的问题。TRMM 3B42V6 降雨产品在华南被介绍进长江盆的水文学周期模拟。一个工具被开发插入内推在象 TRMM 数据的一样的时间、空间的分辨率的雨计量器观察然后从 1998 ～ 2006 评估 TRMM 3B42V6 数据的精确。它证明 TRMM 3B42V6 降雨产品是在到长江盆的申请的可靠、有的好精确。TRMM 3B42V6 数据稍微在湿季节期间过高估计降雨并且在长江盆在旱季期间低估了降雨。结果建议 TRMM 3B42V6 降雨产品能为大规模分布式的水文学模型被用作其他的数据来源。

英文摘要：

High-quality rainfall information is critical for accurate simulation of runoff and water cycle processes on the land surface. In situ monitoring of rainfall has a very limited utility at the regional and global scale because of the high temporal and spatial variability of rainfall. As a step toward overcoming this problem, microwave remote sensing observations can be used to retrieve the temporal and spatial rainfall coverage because of their global availability and frequency of measurement. This paper addresses the question of whether remote sensing rainfall estimates over a catchment can be used for water balance computations in the distributed hydrological model. The TRMM 3B42V6 rainfall product was introduced into the hydrological cycle simulation of the Yangtze River Basin in South China. A tool was developed to interpolate the rain gauge observations at the same temporal and spatial resolution as the TRMM data and then evaluate the precision of TRMM 3B42V6 data from 1998 to 2006. It shows that the TRMM 3B42V6 rainfall product was reliable and had good precision in application to the Yangtze River Basin. The TRMM 3B42V6 data slightly overestimated rainfall during the wet season and underestimated rainfall during the dry season in the Yangtze River Basin. Results suggest that the TRMM 3B42V6 rainfall product can be used as an alternative data source for large-scale distributed hydrological models.

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