description
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Bit fields within each byte are numbered from the left:
7, 6, 5, 4, 3, 2, 1, 0.
The left-most bit (bit 7) is the most significant bit.
The right-most bit (bit 0) is the least significant bit.
bit field Description Key
--------- ----------- ---
0 Cloud Mask Flag 0 = Not determined
1 = Determined
2, 1 Unobstructed FOV Quality Flag 00 = Cloudy
01 = Uncertain
10 = Probably Clear
11 = Confident Clear
PROCESSING PATH
---------------
3 Day or Night Path 0 = Night / 1 = Day
4 Sunglint Path 0 = Yes / 1 = No
5 Snow/Ice Background Path 0 = Yes / 1 = No
7, 6 Land or Water Path 00 = Water
01 = Coastal
10 = Desert
11 = Land
____ END BYTE 1 ______________ ___________________________________________
bit field Description Key
--------- ----------- ---
1-KM FLAGS
----------------------
0 Non- cloud obstruction Flag 0 = Yes / 1 = No
1 Thin Cirrus Detected (Solar) 0 = Yes / 1 = No
2 Snow cover from ancillary map 0 = Yes / 1 = No
3 Thin Cirrus Detected (Infrared) 0 = Yes / 1 = No
4 Cloud Adjacency (cloudy, probably 0 = Yes / 1 = No
cloudy plus 1-pixel adjacent)
5 Cloud Flag - IR Threshold 0 = Yes / 1 = No
6 High Cloud Flag - CO2 Test 0 = Yes / 1 = No
7 High Cloud Flag - 6.7 micron Test 0 = Yes / 1 = No
____ END BYTE 2 ______________ ___________________________________________
bit field Description Key
--------- ----------- ---
0 High Cloud Flag - 1.38 micron Test 0 = Yes / 1 = No
1 High Cloud Flag - 3.9- 12 micron Test 0 = Yes / 1 = No
2 Cloud Flag - IR Temperature 0 = Yes / 1 = No
Difference
3 Cloud Flag - 3.9- 11 micron Test 0 = Yes / 1 = No
4 Cloud Flag - Visible Reflectance Test 0 = Yes / 1 = No
5 Cloud Flag - Visible/NIR Reflectance 0 = Yes / 1 = No
Ratio Test
6 Cloud Flag - NDVI Clear Sky Restoral 0 = Yes / 1 = No
Test
7 Cloud Flag - Night Land and Polar 0 = Yes / 1 = No
7.3-11 micron Test
____ END BYTE 3 ______________ ___________________________________________
bit field Description Key
--------- ----------- ---
0 Cloud Flag - Ocean 8.6- 11 micron Test 0 = Yes / 1 = No
1 Cloud Flag - Clear Sky Restoral Test 0 = Yes / 1 = No
Spatial Consistency
2 Cloud Flag - Clear Sky Restoral Test 0 = Yes / 1 = No
Polar Night, Land, Sun-glint
3 Cloud Flag - Surface Temperature Test 0 = Yes / 1 = No
4 Suspended Dust Flag 0 = Yes / 1 = No
5 Cloud Flag - Night Ocean 8.6- 7.3 micron 0 = Yes / 1 = No
Test
6 Cloud Flag - Night Ocean 11 micon 0 = Yes / 1 = No
Spatial Variability Test
7 Cloud Flag - Night Ocean Low Emissivity 0 = Yes / 1 = No
Low Cloud 3.9-11 micron Test
____ END BYTE 4 ______________ ___________________________________________
bit field Description Key
--------- ----------- ---
250-m Cloud Flag - Visible Tests
--------------------------------
0 Element(1,1) 0 = Yes / 1 = No
1 Element(1,2) 0 = Yes / 1 = No
2 Element(1,3) 0 = Yes / 1 = No
3 Element(1,4) 0 = Yes / 1 = No
4 Element(2,1) 0 = Yes / 1 = No
5 Element(2,2) 0 = Yes / 1 = No
6 Element(2,3) 0 = Yes / 1 = No
7 Element(2,4) 0 = Yes / 1 = No
____ END BYTE 5 ______________ ___________________________________________
bit field Description Key
---------- ----------- ---
0 Element(3,1) 0 = Yes / 1 = No
1 Element(3,2) 0 = Yes / 1 = No
2 Element(3,3) 0 = Yes / 1 = No
3 Element(3,4) 0 = Yes / 1 = No
4 Element(4,1) 0 = Yes / 1 = No
5 Element(4,2) 0 = Yes / 1 = No
6 Element(4,3) 0 = Yes / 1 = No
7 Element(4,4) 0 = Yes / 1 = No
____ END BYTE 6 ______________ ___________________________________________
