Salar de Uyuni and Salar de Coipasa, Bolivian Altiplano
work done in 2010

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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
 

ETM
at Salar de Uyuni

Salar de Uyuni is a slat flat located in the Atacama desert in Bolivia, at an altitude of ~3700 m.
Because depths hardly exceed ~ one meter, the deep water radiances may not be estimated for the visible bands.
This is not too much of a problem though, as the Lw term is mostly important at depth over dark bottoms,
and cloud shadows allow for a rough estimate of atmospheric path radiance.





ALI and HYPERION
at Salar de Coipasa

Salar de Coipasa is a slat flat located in the Atacama desert in Bolivia, at an altitude of ~3700 m.
It provides the opportunity to investigate the linearity of the linearized simplified radiative transfer
at extremely shallow depths over a uniform and very bright bottom, just like Tarawa atoll.

Because depths hardly exceed ~ one meter, the deep water radiances may not be estimated for the visible bands.
This is not too much of a problem though, as the Lw term is mostly important at depth over dark bottoms;
non vegetated desert land and cloud shadows allow for a fairly good estimate of atmospheric path radiance.