HARNESSING EARTH OBSERVATION SYSTEM FOR FAST-REALIZING SUSTAINABLE DEVELOPMENT GOAL (SDG) ON CLEAN WATER AND SANITATION

摘要

This paper demonstrates on study undertaken for development on application of using fully satellite-based water yield indicator for mapping, and monitoring status of availability of sources of resource of large area watersheds to sub-basin level for SDG 6, themed for clean water and sanitation. Employing the water-balance model with 3 major fully satellite inputs, namely: (ⅰ) satellite precipitation radar from Tropical Rainfall Measurement Mission (TRMM); (ⅱ) Evapotranspiration rate from MODIS satellite; and (ⅱ) Landcover types from Landsat Thematic Mapper (TM) data. Assessments of these satellite derived products systematically analysed before further computation of water yield. Results of this study shown good agreements all the satellite derivatives to the corresponding gauged rainfall, selected in-situ evapotranspiration and stream-flow, respectively. Hence, it is therefore concluded this satellite-based initiative is best approach for fast-tracking in realisation of specific targets of the SDG as exemplified in goal # 6 in this paper.