Moshoeshoe, Motshidisi Griffith2019-11-262020-01-072019-11-262020-01-072013Moshoeshoe, M.G(2013)Estimating evaporative water use of different land covers using remote sensing techniques: a case Study of Notwane River Basin in Botswana,Master dissertation, University of Dar es Salaam, Dar es Salaamhttp://localhost:8080/xmlui/handle/123456789/706Available in print form, East Wilbert Africana Collection, Dr. Wilbert Chagula Library, Class mark (THS EAF QC915.7.B55M67)Quantification of actual evaporative water depletion has been and is still a challenge in Notwane river basin, which has lead to a non-efficient management of water resource and non-availability of information about the evaporative water use of different land cover types within the basin scale. In this study SEBS (Surface Energy Balance System) for ILIWIS was used to estimate spatial and temporal distribution of daily ET on each land cover for ungaged basins where meteorological data is not available such as Notwane river basin. This study also used readily available RS data from GLDAS-NOAA datasets as inputs to an energy balance technique to estimate AET, as an alternative to the traditional ET estimation procedures, which require measured meteorological data. MODIS Images were acquired from different months namely; February, June, September and November of the year 2008 representing the four seasons which occur in the basin. Observed meteorological data was used to validate the GLDAS-NOAA datasets, which were used as inputs for SEBS model. The SEBS estimated AET were then exported to a GIS format where together with land cover map of the study area, were then used to compute the evaporative water use of each corresponding land cover. The estimated AET from SEBS was compared with A-pan data and showed good results with the RMSE of 1.439 mm/day. As a result, satellite RS has proven to be capable of estimating evaporative depletion for different land cover in Notwane river basin.enEvapotranspirationRemote sensingBotswanaNotwane river basinThesis