C2X processing chain for S2-MSI L1C

[Ganjug]

Dear Kerstin,

Thank you very much for your advice.

The Study area is eutrophic and small lake (0.32km2).
Abraun said that the reprojection is needed.

About exporting to ENVI format?

The type of resampling surely affects the nature of the values, especially the largest and smallest ones. The fraction of negative values in your data is minimal, so I wonder if it’s a problem at all. Reprojection would lead to further resampling, thus chaning your data even more. You can check if different resampling methods lead to other results. As Marco said, if the values are negative from the beginning, then it’s not a matter of processing.

I found an idea, but I don’t know if it is good idea

In the Atmospheric correction step, I have applied “B8 > 0 && B8 < 0.1 && pixel_classif_flags.IDEPIX_CLOUD == 0 && pixel_classif_flags.IDEPIX_CLEAR_LAND == 0” this expression as Valid_PE expression. As a result, only remained the clear IDEPIX_CLEAR_WATER.

What do you think about this expression?