i.sentinel_2.sen2cor - GRASS manual

NAME

i.sentinel_2.sen2cor - Runs atmospheric correction on a single Sentinel-2 L1C scene using sen2cor.

KEYWORDS

imagery, satellite, Sentinel, atmospheric correction, radiometric conversion, radiance, reflectance, atmosphere

SYNOPSIS

i.sentinel_2.sen2cor

i.sentinel_2.sen2cor --help

i.sentinel_2.sen2cor [-r] input_file=name output_dir=string sen2cor_path=string [aerosol_type=string] [season=string] [ozone_content=integer] [nprocs=integer] [--help] [--verbose] [--quiet] [--ui]

Flags:

-r: Remove input folder after successful completion
--help: Print usage summary
--verbose: Verbose module output
--quiet: Quiet module output
--ui: Force launching GUI dialog

Parameters:

input_file=name [required]: Path to Sentinel-2 L1C dataset in .SAFE format; Name of input file
output_dir=string [required]: Output directory
sen2cor_path=string [required]: Path to sen2cor home directory; E.g. /home/user/sen2cor
aerosol_type=string: Aerosol model to use; Options: rural, maritime, auto; Default: rural
season=string: Mid_latitude season; Options: summer, winter, auto; Default: auto
ozone_content=integer: Ozone content in Dobson Unit (DU); Use 0 to get best approximation from L1C metadata; Default: 0
nprocs=integer: Number of parallel processes used for band importing in sen2cor; Number of cores for multiprocessing, -2 is n_cores-1; Default: -2

DESCRIPTION
EXAMPLE
SEE ALSO
REQUIREMENTS
AUTHOR

DESCRIPTION

i.sentinel_2.sen2cor runs atmospherical correction on a single Sentinel-2 Level-1C scene using Sen2Cor. Therefore, Sen2Cor needs to be installed and configured to use from the command line (it is recommended to use the standalone command line tool).

The entire processing takes place outside of GRASS GIS. This addon is helpful when used as an intermediate step between downloading (i.sentinel.download) and importing (i.sentinel.import) of L1C (then L2A) data.

Most of the Sen2Cor parameters are not changed by this addon in order to make the results consistent with ESA's L2A standard products. Options from the configurable Sen2Cor parameters supported by this addon can be adapted by the user according to Level 2A Input Output Data Definition.

EXAMPLE

i.sentinel_2.sen2cor input_file=S2A_MSIL1C_20190606T102031_N0207_R065_T33UUA_20190606T123501.SAFE output_dir=tmp/sen2cor_output sen2cor_path=/home/user/sen2cor

REQUIREMENTS

Sen2Cor needs to be installed and configured for use from the command line. For additional information, see:

AUTHOR

Guido Riembauer, mundialis GmbH & Co. KG, Germany

SOURCE CODE

Available at: i.sentinel_2.sen2cor source code (history)

Accessed: Monday Jul 27 12:22:42 2026