Supported ENVISAT Products

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AATSR TOA Level 1b Cloud Flags Codings

  Flags of ENVISAT ATS_TOA_1P_cloud_flags Products

Identifier Bit Index Description
"LAND" 0 Pixel is over land
"CLOUDY" 1 Pixel is cloudy (result of all cloud tests)
"SUN_GLINT" 2 Sunglint detected in pixel
"CLOUDY_REFL_HIST" 3 1.6 micron reflectance histogram test shows pixel cloudy (day-time only)
"CLOUDY_SPAT_COHER_16" 4 1.6 micron spatial coherence test shows pixel cloudy (day-time only)
"CLOUDY_SPAT_COHER_11" 5 11 micron spatial coherence test shows pixel cloudy
"CLOUDY_GROSS_12" 6 12 micron gross cloud test shows pixel cloudy
"CLOUDY_CIRRUS_11_12" 7 11/12 micron thin cirrus test shows pixel cloudy
"CLOUDY_MED_HI_LEVEL_37_12" 8 3.7/12 micron medium/high level test shows pixel cloudy (night-time only)
"CLOUDY_FOG_LOW_STRATUS_11_37" 9 11/3.7 micron fog/low stratus test shows pixel cloudy (night-time only)
"CLOUDY_VW_DIFF_11_12" 10 11/12 micron view-difference test shows pixel cloudy
"CLOUDY_VW_DIFF_37_11" 11 3.7/11 micron view-difference test shows pixel cloudy (night-time only)
"CLOUDY_THERM_HIST_11_12" 12 11/12 micron thermal histogram test shows pixel cloudy