Demonstrate how Chl is retrieved from S3

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Tasks:

-Plot S3 imagery -Extract Chl testing both, the OC4Me (ocean colour 4 band ratio algorithm) and IMT Neural Net methods ("the algorithms are widely known and freely available to the public")

References:

Methods comparison: https://www.sciencedirect.com/science/article/pii/S0034425721001620 Enhanced estimation of Chl example: https://www.mdpi.com/2072-4292/13/4/576 Plot example: https://microsoft.github.io/AIforEarthDataSets/data/sentinel-3.html Sample notebook: https://nbviewer.org/github/microsoft/AIforEarthDataSets/blob/main/data/sentinel-3.ipynb

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In the case of S2 the retrieval of chlorophyll-a concentration, Chl, from ocean colour remote sensing is traditionally performed using a blue-to-green ratio or with nir–red ratio. https://www.mdpi.com/2072-4292/11/1/64