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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