i.rh - GRASS GIS manual

Note: This addon document is for an older version of GRASS GIS that will be discontinued soon. You should upgrade your GRASS GIS installation, and read the current addon manual page.

NAME

i.rh - Water in atmosphere: relative humidity, water vapour (saturated, actual)

KEYWORDS

imagery, atmosphere, humidity, water vapour, precipitable water

SYNOPSIS

i.rh

i.rh --help

i.rh [-sae] pw=name pa=name ta=name dem=name output=name [--overwrite] [--help] [--verbose] [--quiet] [--ui]

Flags:

-s: Output the saturated water vapour (esat)
-a: Output the actual water vapour (eact)
-e: Output the atmospheric emissivity (eatm)
--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:

pw=name [required]: Name of the Precipitable Water layer
pa=name [required]: Name of the Atmospheric Pressure layer
ta=name [required]: Name of the mean daily air temperature layer
dem=name [required]: Name of the elevation layer
output=name [required]: Name of the output layer

DESCRIPTION
NOTES
REFERENCES
SEE ALSO
AUTHOR

DESCRIPTION

i.rh calculates the relative humidity -s will return saturated water vapour instead. -a will return actual water vapour instead.

NOTES

REFERENCES

https://www.researchgate.net/publication/227247013_High-resolution_Surface_Relative_Humidity_Computation_Using_MODIS_Image_in_Peninsular_Malaysia/

AUTHOR

Yann Chemin, Plumergat, France

SOURCE CODE

Available at: i.rh source code (history)

Latest change: Mon Jun 28 07:54:09 2021 in commit: 1cfc0af029a35a5d6c7dae5ca7204d0eb85dbc55