What kind of parameters you would change in order to optimize sen2cor for the coastal area?

I am interested for chlorophyll-a retrieval from satelite data.

Dear Giannis,

I would suggest to use the C2RCC algorithm to perform both atmospheric correction and estimation of Chlorophyll-a concentration in coastal areas.
You can find it in SNAP menu under: Optical --> Thematic Water Processing --> C2RCC Processors.


Resampling S2 data before using the C2RCC processor using the S2Resample operator (under: Optical --> Geometric --> S2 Resampling processor) is warmly advised, as reported in this post: