use a LUT in 4SM to map the diffuse attenuation coefficient Kd
work done in 2021 at 15 m GSD
Using the Panchromatic band for water column correction
to derive water depth and spectral bottom signature:

Landsat 8 OLIP bandset used for this work

Purple=1Blue=2Green=3PAN=4Red=5NIR=6 and SWIR1=7

   peer-reviewed and published in 2017    



4SM GUI   Some day, the 4SM command line shall be controled by a graphic user interface. This is demanded by all potential users, who are put off by the complex and fuzzy 4SM command line. I am certainly not the best person to take charge of that! Why not you offer to take this onboard your workplan? Rewards apply!!!!!!!  ...

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Assessment of current situation, and validation of 4SM

Dans General

1 - ASSESSMENT of 4SM============= "What is your assessment of the current state of the art and your algorithms in particular?" (sept 9th 2011) For me, the "current state of the art" is After over 30 years of generous funding, the basics for a simplified radiative transfer equation have been very well documented (by Philpot then Maritorena), along with the risks one has to take/assume prior to "operating" this model. no one should indulge in ignoring the water volume reflectance, lest they'll have to pay the price in the form of badly unde...

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4SM and cloud computing

So much for cloud computing: VNC : let's work together live! Cloud computing 4SM executable code is for Intel x86 CPU in a 32 bits UbuntuLinux/Gnome/bash environment. MS addicts: most prospective "would-be" 4SM users are stuck with their own MS setup. They won't hear of installing Linux on their machine. Cloud computing appears to be the solution these days: I see several advantages 4SMguest users on Server shall have a great 4SM-tutorials experience from inside their petty MS session wherever they hap...

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