Downward shortwave radiation estimation and spatial assessment on sites over complex terrain applying integrative approach of MTCLIM-XL, interpolation, RS and GIS

摘要: Downward shortwave radiation (DSR) is a highly variable solar source on spatiotemporal basis and essential for energy agriculture systems, while its calculations are helpful in the environment-related studies, climatology, monitoring fire risk. Statistical methods developed to extrapolate values of climatic variables could fail generate reliable findings DSR over complex terrain without considering local topographic factors. In present study, we proposed an integrative approach MTCLIM-XL extrapolation with remote sensing (RS) geographic information system (GIS) estimate real-time spatial potential surfaces contrasting elevated sites mountainous Quetta (Pakistan).Based methodological approach, data product high-resolution DEM (SRTM 30m) was processed extract data, meteorological were obtained from base site, Subsequently, executed simulation calculate daily-based (W/m2).Spatial distribution generated by applying deterministic interpolation complementing quantification Hillshade analysis spatially obstructive surfaces, resultant hotspot-based assessed specified threshold level (above 250 W/m2 = 2 kW h/m2) area. We observed usable at target during study period 2015 April 2016. Using EUMETSAT CMSAF as standard, validation demonstrates agreeable results low RMSE high correlation coefficient selected sites, except some relatively elevations irregular gradients. Analysis zenith angle evaluate inverse relation increment shows relation, negative trend only features rugged topography. conclusion, RS GIS integration manifests estimation assessment-based exploration having no ground prospectively it will complement studies mesoscale.