laparguera20151030-3

under mask 3
Depth Retrievals down to ~30 m
PAN solution is a confirmed substitute to the GREEN solution
PAN solution vs GREEN solution

Blue vs GREEN under mask_3 K_BLUE/K_GREEN=0.64 This is OII water type Maximum depth of bottom detection is ~30 m LsM is for coral sand this calibration assumes that the brightest shallow pixels are located over bright coral sands Land pixels at depth 0 m show where the Soil Line must be placed; this is done by specifying Lw=Lsw-La in both Blue and Green bands Good color separation is observed This means that the conditions for depth retrieval are favorable This plot shows some signs that Lsw_GREEN should be increased a bit Shallowest pixels are ~7.5 m deep	Blue vs PAN under mask_3 K_BLUE/K_PAN remains <0.80 Land pixels are more scattered than in the other plot this might be caused by some mis-registration of the 2*2 sum-aggregated Panchromatic band This plot shows signs that the calibration pf the PAN band still needs somme attention Stronger color separation is observed, particularly in the 0-20 m depth range This means that depth retrieval my be achieved in more favorable conditions but, in these clear OII waters: ZMax_GREEN~=30 m ZMax_PAN ~=18 m
TCC raw mask_3 is shown profile_yellow is shown this open oceanic waters	Please remember In 4SM, the BPL assumption assumes means that the optical properties of the clearest waters under the current ROI are estimated Should that ROI also harbour less clear water bodies, this shall generally go un-noticed and therefor shall not be accounted for
PAN solution along profile YELLOW Modeling by the "PAN solution" The RED profile shows LIDAR depth from 20 to 30 km, shelf waters cause depth under-estimation PAN and GREEN solutions yield ......	GREEN solution along profile YELLOW Modeling by the "GREEN solution" The RED profile shows LIDAR depth this plot also shows water column corrected signatures for Coastal, Blue and Green bands topographic lows harbour the brightest bottoms (i.e. coral sands) ....approximately the same depth
GREEN solution vs PAN solution along profile YELLOW PAN and GREEN solutions yield approximately the same depth retrieval Minute differences allow for spectral features to appear that the GREEN solution cannot resolve	GREEN solution vs PAN solution along profile YELLOW This confirms that the PAN solution is trustworthy to considerable advantage
under mask 3 ZLIDAR-ZPAN under mask 3 Calibration only used pixels inside mask_3 BLUE: depth over-estimation RED: depth under-estimation Coastal shelf waters probably cause depth underestimation over the southern half of this area	ZLIDAR-ZPAN in centimeters
Z4SM vs ZLIDAR under mask_3 Z4SM vs ZLIDAR under mask_3 most pixels display along the diagonal: NO NEED FOR FIELD DATA! depth underestimation caused by coastal shelf waters shows around 13-18 m there is nothing we can do depth overestimation around 20-25 m is caused by slight overestimation of Lsw_GREEN in the Northern area (blue tones) : water there might be slightly clearer this can be easily corrected if desired, by slightly decreasing Lsw_GREEN	ZLIDAR-ZPAN under mask_3 ZLIDAR-ZPAN under mask 3 the 15-25 m depth range is processed by the GREEN solution, as the PAN band is extinct as illustrated here, where PANsolution is mapped GREY GREENsolution is mapped GREEN
Z4SM vs ZLIDAR mask_3 is now processed separately here mask_3 should be extenced to cover more of the deep blue areas in this image	TCC WCC mask_3 is now processed separately here