1 = Yes Yes: Any pixel in the 8x8 horizontal Bad SDR 1 0 = No cell has bad SDR 1 = Yes Yes: Any pixel in the 8x8 horizontal Sunglint 1 0 = No cell has sunglint 1 = Yes Yes: Any pixel in the 8x8 horizontal Cloud Shadow 1 0 = No cell has cloud shadow 1 = Yes Yes: Any pixel in the 8x8 horizontal Snow/Ice 1 0 = No cell has snow/ice 1 = Yes Yes: Any pixel in the 8x8 horizontal Fire 1 0 = No cell has fire A.2.3. QF3 Flag Values Bits Conditions Notes Yes: Any pixel in the 8x8 horizontal Low sun, 1 = Yes cell has the day/night flag set to 1 degraded 0 = No 'Low sun, degraded' (65º < Solar zenith angle ≤ 80º) Yes: Any pixel in the 8x8 horizontal Low sun, 1 = Yes cell has the day/night flag set to 1 excluded 0 = No 'Low sun, excluded' (80º < Solar zenith angle ≤ 85º) Bright surface Yes: Any pixel in the 8x8 horizontal (land)/Shallow 1 = Yes 1 cell has a bright pixel (land) or or Turbid 0 = No turbid/shallow water (ocean) Water (ocean) Low AOT, APSP 1 = Yes Yes: Any pixel in the 8x8 horizontal 1 Excluded 0 = No cell has excluded APSP A.2.4. QF4 Flag Values Bits Conditions Notes Selects the dominant 100 = 4 = Urban, Polluted aerosol 011 = 3 = Urban, Clean model Land Model 010 = 2 = Smoke, Low (largest Aerosol Index Absorption 3 number of (land) 001 = 1 = Smoke, High pixels Absorption involved in 000 = 0 = Dust the EDR aggregation)
Bad SDR 1 = Yes 0 = No 1 Yes: Any pixel in the 8x8 horizontal cell has bad SDR Sunglint 1 = Yes 0 = No 1 Yes: Any pixel in the 8x8 horizontal cell has sunglint Cloud Shadow 1 = Yes 0 = No 1 Yes: Any pixel in the 8x8 horizontal cell has cloud shadow Snow/Ice 1 = Yes 0 = No 1 Yes: Any pixel in the 8x8 horizontal cell has snow/ice Fire 1 = Yes 0 = No 1 Yes: Any pixel in the 8x8 horizontal cell has fire A.2.3. QF3 Flag Values Bits Conditions Notes Low sun, degraded 1 = Yes 0 = No 1 Yes: Any pixel in the 8x8 horizontal cell has the day/night flag set to 'Low sun, degraded' (65º < Solar zenith angle ≤ 80º) Low sun, excluded 1 = Yes 0 = No 1 Yes: Any pixel in the 8x8 horizontal cell has the day/night flag set to 'Low sun, excluded' (80º < Solar zenith angle ≤ 85º) Bright surface (land)/Shallow or Turbid Water (ocean) 1 = Yes 0 = No 1 Yes: Any pixel in the 8x8 horizontal cell has a bright pixel (land) or turbid/shallow water (ocean) Low AOT, APSP Excluded 1 = Yes 0 = No 1 Yes: Any pixel in the 8x8 horizontal cell has excluded APSP A.2.4. QF4 Flag Values Bits Conditions Notes Land Model Aerosol Index (land) 100 = 4 = Urban, Polluted 011 = 3 = Urban, Clean 010 = 2 = Smoke, Low Absorption 001 = 1 = Smoke, High Absorption 000 = 0 = Dust 3 Selects the dominant aerosol model (largest number of pixels involved in the EDR aggregation)
Aerosol_Product_Users_Guide_V2.0.docx