caicos_ETM_009_045_2007-02-14
        



 
1 - NO NEED for field data, nor for atmospheric correction
2 - this is demonstrated in this website, using a variety of hyper/multi spectral data
 
Requirements are
1 - homogeneous water body and atmosphere
2 - some coverage of optically deep water
3 - some coverage of dry land
 
Problems are
1 - the precision on estimated depth is found wanting, because the noise-equivalent change in radiance  of accessible data is too high for shallow water column correction work 
2 - radiance data should be preprocessed by the provider at level 1 in order to improve S/N ratio
3 - exponential decay: the deeper/darker the bottom, the poorer the performances
 
So
I keep digging
until suitable data
become available
 



 Final calibration diagram

* K[nir]~=4.5 m-1
* -cWL/0.500/0.610/0.100/0.500
* -dLsw0000/01.0/0000/0000





PlotZ23
RLBbg=1.00


PlotZ23
RLBbg=1.20