L1C to L2A characteristics

[TBisc]

Hello,

I downloaded S2 L1C (L2A not availble) and L2A images and want to process the L1C to L2A. I used the plugin Sen2Cor but I don’t fully understand the processing parameters and the values I should enter : for example for Wv correction, Vis update mode, Wv watermask, cirrus correction, Brdf correction, altitude (default value = 0.1), Wv thres cirrus. What is related to the terrain correction? Is the dem reference enough?
If anyone has detailed information/advice, I would be glad !
In fact, I downloaded one image in both L1C and L2A, to get all the parameters right for the others L1C images (and being comparable to others L2A images).

I know my questions must be quite simple but as I am new to these softwares so please be understanding.

[obarrilero]

Hello,

You can find some documents about sen2cor here:
http://step.esa.int/main/third-party-plugins-2/sen2cor/

and the ATBD here:

A document describing the SEN2COR land classification algorithm

Hi, I understand there used to be a document available that described how to the Sen2Cor land classification algorithms works. However, I'm unable to locate that document on the web and I'd be very grateful if someone could provide that PDF. Regards, blazs.

In the “Sentinel-2 Level 2A Input Output Data Definition” you will find a description of the GIPP parameters.

[TBisc]

Thank you, I missed that indeed.