Using Opportunities of Precipitation Maps Generated by TRMM and GPM Satellite Products for Water Budget Calculations

Precipitation has significant spatial and temporal variability. mostly the distribution of precipitation measuring stations in one basin is a major deficiency in water accounting studies. in recent years for determining the spatial distribution of precipitation, using of interpolation methods and remote sensing techniques are increasing. however, a sufficient number of raingauge data is needed to use interpolation methods in a basin. for this reason, in large scale basins with little or no measurement data, remote sensing technology based on satellite data can be very useful. the purpose of this study is to determine the spatial distribution of precipitation from trmm and gpm satellite data and to evaluate the usage possibilities of these data in hydrological studies. this study was carried out in kizilirmak basin. for this purpose, in kizilirmak basin, trmm and gpm satellite products are obtained for 2013 (october 1, 2012 - sep 30 2013) and 2015 water years (october 1, 2014 - september 30, 2015) and precipitation maps were generated. as a result of this study, it was concluded that trmm and gpm precipitation satellite products to the extent of resolutions, can be used in watershed water budget studies in large scale basins such as kızılırmak basin. this study t has been evaluated that future validation and calibration studies, trmm and gpm satellite data can be used by validating with raingauge data.