Evaluation of TRMM 3B42 V7 Rainfall Product over the Oum Er Rbia Watershed in Morocco

• DOI: 10.3390/cli5010001
• Publication Date: 2017-01-04T14:39:32Z
• Authors: Hamza Ouatiki; Abdelghani Boudhar; Yves Tramblay; Lionel Jarlan; Tarik Benabdelouhab; Lahoucine Hanich; M. El Meslouhi; Abdelghani Chehbouni
• Keywords: [SDE] Environmental Sciences; 550; 13. Climate action; [SDE]Environmental Sciences; 15. Life on land; evaluation; rainfall; remote sensing; TRMM; semi-arid; Oum Er Rbia; Morocco; 01 natural sciences; 6. Clean water; 0105 earth and related environmental sciences

In arid and semi-arid areas, rainfall is often characterized by a strong spatial temporal variability. These environmental factors, combined with the sparsity of measurement networks in developing countries, constitute real constraints for water resources management. recent years, several sources have become available, such as TRMM data (Tropical Rainfall Measurement Mission). this study, 3B42 Version 7 product was evaluated using rain gauges measurements from 19 stations Oum-Er-Bia (OER) basin located center Morocco. The relevance tested direct comparison observations at different time scales (daily, monthly, annual) between 1998 2010. Results show that satellite provides poor estimations daily scale giving an average Pearson correlation coefficient (r) 0.2 Root Mean Square Error (RMSE) 10 mm. However, accuracy improved when temporally averaged to monthly (r 0.8 RMSE 28 mm) or annual 0.71 157 mm). Moreover, observed obtained spatially watershed scale. Therefore, scales, can be useful source monitoring management ungauged basins regions.