This study examines the potential of Sentinel-2 (S2) temporal mosaics (TM) of non-vegetated soils to enhance soil property mapping in the semi-arid Sminja Plain, Tunisia (480 km2). Using multi-season data from 2019 to 2023, TMs were generated with two processing platforms, Google Earth Engine (GEE) and THEIA, and their predictive performances were compared. Non-vegetated soils were isolated using thresholds of NDVI < 0.35 and NBR2 < 0.09 to optimise non-vegetated soil extraction. Key soil proper