Documentation of Sen2Cor LUT creation


I am looking for documentation how the atmospheric correction lookup tables in Sen2Cor have been produced. That is, more detailed and specific information than found in the ATBD, IODD, and SUM documents available from the Sentinel documents library (detailing the LibRadtran setup used and the exact meaning/definition of the LUT parameters).
The reason is that we need (or want to test) some more custom-made LUTs since we find the results from the standard setups not sufficiently satisfactory over our main region of interest (Scandinavia).

@umwilm, @Jerome, @bdpg, maybe? @marpet?
Any hints anyone else?

Best wishes,