PREFIRE Algorithm Theoretical Basis Documents (ATBDs) Data Release R01 PREFIRE 1A-RAD/1B-RAD (Level 1 radiance) ATBD PREFIRE 2B-MSK (Level 2b cloud mask) ATBD PREFIRE 2B-SFC (Level 2b spectral surface emissivity) ATBD PREFIRE 2B-ATM (Level 2b atmospheric properties) ATBD PREFIRE 2B-CLD (Level 2b cloud properties) ATBD PREFIRE 2B-FLX (Level 2b spectral flux) ATBD