Sen2Cor is a processor for Sentinel-2 Level 2A product generation and formatting; it performs the atmospheric-, terrain and cirrus correction of Top-Of- Atmosphere Level 1C input data. Sen2Cor creates Bottom-Of-Atmosphere, optionally terrain- and cirrus corrected reflectance images; additional, Aerosol Optical Thickness-, Water Vapor-, Scene Classification Maps and Quality Indicators for cloud and snow probabilities. Its output product format is equivalent to the Level 1C User Product: JPEG 2000 images, three different resolutions, 60, 20 and 10 m.

Sen2Cor installation packages are provided as standalone installers. For a short introduction of how to install the standalone version of Sen2Cor, read the installation steps described in section 4 of the release note S2-PDGS-MPC-L2A-SRN-V2.5.5.pdf

For any questions about the usage of Sen2Cor, please follow the general STEP forum area dedicated to Sen2Cor:

Latest release:

Detailed information on all changes implemented in the new format of Sentinel-2 L2A product is available in the dedicated documentation online: Sentinel-2 Products Specification Document (PSD)

Release Note: S2-PDGS-MPC-L2A-SRN-V2.5.5.pdf
Software User Manual: S2-PDGS-MPC-L2A-SUM-V2.5.5_V2.pdf
Sentinel-2 Level 2A Product Definition: S2-PDGS-MPC-L2A-PDD-V2.5.5.pdf
Sentinel-2 Level 2A Input Output Data Definition: S2-PDGS-MPC-L2A-IODD-V2.5.5.pdf

The schemas of the GIPP file, GIPP AC, SC, and PB files relative to Level-2A products are attached to the IODD document as a *.zipp attachment. The attachment should be saved, and renamed as .zip to enable it to be opened.