i.emissivity.1grass man page

i.emissivity — Computes emissivity from NDVI, generic method for sparse land.

Keywords

imagery, emissivity, land flux, energy balance

Synopsis

i.emissivity
i.emissivity --help
i.emissivity input=name output=name [--overwrite] [--help] [--verbose] [--quiet] [--ui]

Flags

--overwrite
Allow output files to overwrite existing files
--help
Print usage summary
--verbose
Verbose module output
--quiet
Quiet module output
--ui
Force launching GUI dialog

Parameters

input=name [required]
Name of the NDVI map [-]
output=name [required]
Name of the output emissivity layer

Description

i.emissivity calculates the emissivity in the longwave radiation spectrum, according to the semi-empirical equation related to NDVI by Caselles and Colles (1997), valid in the NDVI range of 0.16 to 0.74.

Estimation in the 8-14 micrometers range for sparse canopy...

See Also

i.eb.netrad

Authors

Yann Chemin, GRASS Development Team

Last changed: $Date: 2014-12-09 18:31:29 +0100 (Tue, 09 Dec 2014) $

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