Here you can download the documentation and associated test datasets for the Aeolus Level-2B processing software. The source code is available separately, see here, and only when the license terms are accepted.
With L2Bp v3.60 (and higher versions) an additional source code is made available to users. It is a dedicated Python software package that was developed to correct for orbital bias variations related to temperature fluctuations across the primary telescope mirror. The correction is based on a multiple linear regression approach with telescope temperatures as independent and ECMWF O-B values as dependent variables. Further information about the methodology can be found here: https://amt.copernicus.org/articles/14/7167/2021/. Information about installation and usage of the AUX_TEL generator is provided in the readme as part of the L2Bp v3.60 (and higher versions) release (see below).