00 = 0 = Confident Direct copy from VCM, with one modification on Cloud Clear confident clear case Detection 01 = 1 = Probably CM_CONF_CLOUDY (3) Result & Clear 2 CM_PROB_CLOUDY(2) Confidence 10 = 2 = Probably CM_PROB_CLEAR(1) Indicator Cloudy CM_CONF_CLEAR(0): (QF2.1) 11 = 3 = Confident if the heavy aerosol flag is turned on in VCM Cloudy 00 = 0 = Confident Initially copied from VCM, but subsequently Clear modified to be the most cloudy category available Adjacent 01 = 1 = Probably from the adjacent 3x3 cloud confidence flags Pixel Cloud Clear (QF2.1) Confidence 2 10 = 2 = Probably CM_CONF_CLOUDY (3) Value Cloudy CM_PROB_CLOUDY(2) (QF2.2) 11 = 3 = Confident CM_PROB_CLEAR(1) Cloudy CM_CONF_CLEAR(0) Direct copy from VCM, add a new surface type if 000 = 0 = Land & ephemeral water is detected in the internal test Desert over land. 001 = 1 = Land, No CM_DESERT (0) Desert Land/Water CM_LAND (1) 010 = 2 = Inland Background 3 CM_IN_WATER(2) Water (QF2.3) CM_SEA_WATER (3) 011 = 3 = Sea Water CM_COASTAL (5) 101 = 5 = Coastal AOT_EPHWAT (6): 110 = 6 = New type added through internal test over land Ephemeral Water AOTQFYES(1): If channel reflectance or brightness temperature are missing (<-999.0) Bad SDR 1 = Yes 1 Over land: M1-M12,M15,M16 (QF2.4) 0 = No Over water: M3-11, M15,M16 AOTQFNO(0): otherwise QF3 Flag Values Bits Conditions
Cloud Detection Result & Confidence Indicator (QF2.1) 00 = 0 = Confident Clear 01 = 1 = Probably Clear 10 = 2 = Probably Cloudy 11 = 3 = Confident Cloudy 2 Direct copy from VCM, with one modification on confident clear case CM_CONF_CLOUDY (3) CM_PROB_CLOUDY(2) CM_PROB_CLEAR(1) CM_CONF_CLEAR(0): if the heavy aerosol flag is turned on in VCM Adjacent Pixel Cloud Confidence Value (QF2.2) 00 = 0 = Confident Clear 01 = 1 = Probably Clear 10 = 2 = Probably Cloudy 11 = 3 = Confident Cloudy 2 Initially copied from VCM, but subsequently modified to be the most cloudy category available from the adjacent 3x3 cloud confidence flags (QF2.1) CM_CONF_CLOUDY (3) CM_PROB_CLOUDY(2) CM_PROB_CLEAR(1) CM_CONF_CLEAR(0) Land/Water Background (QF2.3) 000 = 0 = Land & Desert 001 = 1 = Land, No Desert 010 = 2 = Inland Water 011 = 3 = Sea Water 101 = 5 = Coastal 110 = 6 = Ephemeral Water 3 Direct copy from VCM, add a new surface type if ephemeral water is detected in the internal test over land. CM_DESERT (0) CM_LAND (1) CM_IN_WATER(2) CM_SEA_WATER (3) CM_COASTAL (5) AOT_EPHWAT (6): New type added through internal test over land Bad SDR (QF2.4) 1 = Yes 0 = No 1 AOTQFYES(1): If channel reflectance or brightness temperature are missing (<-999.0) Over land: M1-M12,M15,M16 Over water: M3-11, M15,M16 AOTQFNO(0): otherwise QF3 Flag Values Bits Conditions