AOT Quality 11 = 3 = High 10 = 2 = Medium 01 = 1 =Low 00 = 0 = Not Produced 2 High: Number of good quality pixel AOT retrievals > 16 (1/4 the total number of pixels in aggregated horizontal cell) Medium: Number of good quality retrievals ≤ 16 and the number of good/degraded quality retrievals ≥ 16 Low: Number of good/degraded quality retrievals < 16 Not Produced: No good/degraded quality retrievals, neither land or sea water dominant (number of land or ocean pixels < half the number of good/degraded pixels in the horizontal cell), ellipsoid fill in the geolocation, night scan, has a pixel with a solar zenith angle between 80º and 85º but no pixel with a solar zenith angle between 65º and 80º APSP Quality 11 = 3 = High 10 = 2 = Medium 01 = 1 =Low 00 = 0 = Not Produced 2 High: Number of good quality pixel APSP retrievals > 16 (1/4 the total number of pixels in aggregated horizontal cell) Medium: Number of good quality retrievals ≤ 16 and the number of good/degraded quality retrievals ≥ 16 Low: Number of good/degraded quality retrievals < 16 Not Produced: No good/degraded quality retrievals, neither land or sea water dominant (number of land or ocean pixels < half the number of good/degraded pixels in the horizontal cell), ellipsoid fill in the geolocation, night scan Land, Ocean, or Not Produced 00 = 0 = Land 01 = 1 = Ocean 10 = 2 = Not Produced 2 Land: Number of land/desert pixels ≥ half the total good/degraded pixels within the horizontal cell Ocean: Number of sea water pixels > half the total good/degraded pixels within the horizontal cell
AOT out of Spec Range 1 = Yes 0 = No 1 Yes: AOT at 550 nm of any pixel in the 8x8 horizontal cell is out of spec range (0.0-2.0) APSP out of Spec Range 1 = Yes 0 = No 1 Yes: APSP of any pixel in the 8x8 horizontal cell is out of spec range A.1.2 QF2 Flag Values Bits Conditions Notes Cloud Contamination 1 = Yes 0 = No 1 Yes: Any pixel in the 8x8 horizontal cell is not confidently clear Cloud adjacent to cell 1 = Yes 0 = No 1 Yes: Any pixel in the 8x8 horizontal cell has their cloud adjacency flagged as probably or confidently cloudy Cirrus Contamination 1 = Yes 0 = No 1 Yes: Any pixel in the 8x8 horizontal cell has cirrus 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.1.3 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)
Suspended Matter Detection Product Quality 11 = 3 = High 10 = 2 = Medium 01 = 1 = Low 00 = 0 = Not Produced 2 High: Pixel SM type quality is good Medium: Pixel SM type quality is degraded Low: Pixel SM type quality is excluded Not Produced: Pixel SM type quality is not produced Pixel SM type quality is from Aerosol IP product, it is set by default to the Pixel-level AOT quality (see Table 3 for conditions) and then changed under the following conditions: Excluded: AOT at 550 nm < 0.5 Good: If volcanic ash is detected, SM type quailty is reset to good no matter what the AOT quality is Suspended Matter Type Product Quality 11 = 3 = High 10 = 2 = Medium 01 = 1 = Low 00 = 0 = Not Produced 2 High: Pixel SM type quality is good and "Low AOT, SM Typing Excluded" flag is not set (AOT at 550 nm ≤ 0.15 (no SM) or AOT at 550 nm ≥ 0.5) Medium: Pixel SM type quality is degraded and "Low AOT, SM Typing Excluded" is not set (AOT at 550 nm ≤ 0.15 (no SM) or AOT at 550 nm ≥ 0.5) Low: Pixel SM type quality is good/degraded and "Low AOT, SM Typing Excluded" is set (0.15 < AOT at 550 nm < 0.5) Not Produced: Pixel SM type quality is not produced Pixel SM type quality is from Aerosol IP product, it is set by default to the Pixel-level AOT quality and then changed under the following conditions: Excluded: AOT at 550 nm < 0.5 Good: If volcanic ash is detected, SM type quailty is reset to good no matter what the AOT quality is Low AOT flag is from Aerosol IP product, it is set under the following conditions: Yes: 0.15 < AOT at 550 nm < 0.5 No: AOT at 550 nm ≤ 0.15 (no SM), AOT at 550 nm ≥ 0.5
Smoke Concentration Product Quality 11 = 3 = High 10 = 2 = Medium 01 = 1 = Low 00 = 0 = Not Produced 2 High: Pixel SM type quality is good and smoke concentration is not larger than the maximum threshold (1000 µg/m3) Medium: Pixel SM type quality is degraded and smoke concentration is not larger than the maximum threshold (1000 µg/m3) Low: Pixel SM type quality is good/degraded and smoke concentration is larger than the maxiumum threshold (1000 µg/m3) Not Produced: Pixel SM type quality is not produced Pixel SM type quality is from Aerosol IP product Land, Ocean, or Not Produced 00 = 0 = Land 01 = 1 = Ocean 11 = 3 = Not Produced 2 Land: Pixel surface type is land or desert Ocean: Pixel surface type is sea water Pixel surface type is from Aerosol IP product A.2.2 QF2 Flag Values Bits Conditions Notes Cloud Contamination 1 = Yes 0 = No 1 Yes: Pixel is not confidently clear Cloud adjacent to cell 1 = Yes 0 = No 1 Yes: Pixel adjacent cloud flag is confident or probably cloudy Cirrus Contamination 1 = Yes 0 = No 1 Copied from Aerosol IP Cirrus Quality Flag Bad SDR 1 = Yes 0 = No 1 Copied from Aerosol IP Bad SDR Quality Flag Sunglint 1 = Yes 0 = No 1 Yes: Pixel has sunglint flag set Cloud Shadow 1 = Yes 0 = No 1 Copied from Aerosol IP Cloud Shadow Quality Flag