Monthly TRMM correction and application in hydrological modelling Online publication date: Sun, 30-Jul-2023
by Theo Senjaya; Doddi Yudianto; Xie Yuebo; Wanny K. Adidarma
International Journal of Hydrology Science and Technology (IJHST), Vol. 16, No. 2, 2023
Abstract: A more accurate and complex hydrologic model needs more hydrological data as the input. Inadequate hydrological data to conduct a proper hydrologic model became a problem in many cases. Tropical Rainfall Measuring Mission (TRMM) became an alternative solution to the limitation of rainfall data. However, the difference in the measurement method between conventional ground rainfall stations and the TRMM satellite gives some errors in TRMM data and needs to be corrected before being used in the hydrologic model. This study evaluates the quality of TRMM rainfall data and its applicability in the water availability model on a monthly basis. The NRECA model evaluated the relationship between corrected TRMM and observed flow at Delingan Reservoir. The corrected TRMM showed considerable results compared to the ground station data based on the analysis. Based on these results, TRMM can be used to substitute ground station data in the case of data unavailability.
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