All informations regarding the Sentinel products can be found here: SentiWiki

This space includes information on the components of the Sentinel instrument systems, the specifics of the measurement techniques used, details on the applied corrections, and the processing steps required to derive geophysical variables. It provides comprehensive coverage for all Sentinel missions, including Sentinel-1, Sentinel-2, Sentinel-3, and Sentinel-5P, ensuring users have the necessary knowledge to effectively utilize the full range of Sentinel data products.

Several articles are available in the WEkEO Help Center, but if you have any questions, issues or suggestions, feel free to contact us through a chat session available in the bottom right corner of the page.