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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/11689

Title: Validation of TRMM Data in the Black Volta Basin of Ghana
Authors: Adjei, Kwaku Amaning
Ren, Liliang
Appiah-Adjei, Emmanuel Kwame
Kankam-Yeboah, Kwabena
Agyapong, Albert Anning
Keywords: Remote sensing
Rainfall
Ghana
Geographic information systems
Issue Date: 2012
Publisher: Journal of Hydrologic Engineering
Citation: Journal of Hydrologic Engineering, 2012;17:647-654.
Abstract: This study was conducted in the Black Volta basin, Ghana, to determine how Tropical Rainfall Measuring Mission (TRMM) satellite-derived rainfall compares with ground-measured values and the possibility of using it to complement ground-measured rainfall. Bilinear interpolation was used to resample 0:25° × 0:25° TRMM 3B42V6 monthly rainfall grids to determine site-specific rainfall of the basin based on rain gauge locations and analyzed statistically. The study showed that the correlation between the monthly datasets ranged from 0.73 to 0.88. A plot of the average monthly data of all the stations gave a correlation coefficient (R) of 0.94. The overall catchment rainfall was well represented by TRMM data. However, the annual station rainfalls were either underestimated or overestimated. The underestimations and overestimations were mostly below 20% and 10%, respectively, of the raingauge measurements. Although the TRMM rainfall data did not perfectly match with the ground measurements, it can still be used to supplement ground measurements and for estimating rainfalls in ungauged basins
Description: An article published in Journal of Hydrologic Engineering, 2012;17:647-654.
URI: http://hdl.handle.net/123456789/11689
Appears in Collections:College of Engineering

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