SNAP Data Processors - The Rayleigh Correction Processor |

### Overview

The Rayleigh Correction (or BRR = 'Bottom-of-Rayleigh Reflectance') Processor performs the Rayleigh correction on a MERIS, OLCI or S2 MSI L1C product. This simplified atmospheric correction procedure is a first attempt to normalise the TOA signal for gaseous and Rayleigh effects, whilst ignoring the more complicated and variable effects of absorbing aerosols. Furthermore, the procedure corrects for the significant absorption by water vapour in the band centered at 709 nm.

Rayleigh Correction Algorithm Specification

Rayleigh Correction Processor Documentation