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ASTER satellite data provides calibrated at-sensor radiance across 14 spectral bands, with spatial resolutions of 15 meters for VNIR, 30 meters for SWIR, and 90 meters for TIR bands. NASA's LPCLOUD organization produces this Level 1T product by applying geometric and terrain corrections to raw ASTER L1A data. Data acquisition for TIR bands ended in January 2026, and there are known gaps in the time series from late 2024 to early 2025.
Data files include georeferenced browse images and quality assessment text files. Users must note the specific acquisition gaps and the permanent end of TIR data. Zero-value corrections have been applied to scans since October 2017.