ECMWF prepared L2B and L2C datasets for testing by the Aeolus CAL/VAL teams (in early 2017, based on L2Bp v2.30). These were prepared by running a realistic simulation of Aeolus using ECMWF model data as inputs to the Aeolus simulator (E2S).
The Level-2B datasets (in Earth Explorer format) are here.
Example of Aeolus L2B BUFR products are here.
The Level-2C datasets (in Earth Explorer format) are here.