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ASTER L1B data provides radiometrically calibrated and geometrically co-registered radiance measurements from the Terra satellite. The product includes Visible and Near Infrared (VNIR) bands at 15-meter resolution, Shortwave Infrared (SWIR) bands at 30 meters, and Thermal Infrared (TIR) bands at 90 meters. It is produced by LPCLOUD from NASA's ASTER instrument, with known operational anomalies affecting different spectral bands over time.
Users must account for instrument anomalies: SWIR data is unavailable after 2009 and problematic for periods prior, TIR acquisitions are unavailable after January 2026, and there are documented data gaps in 2024-2025. License terms are unknown and should be verified before use.