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NAME

i.evapo.mh - Computes evapotranspiration calculation modified or original Hargreaves formulation, 2001.

KEYWORDS

imagery, evapotranspiration

SYNOPSIS

i.evapo.mh
i.evapo.mh --help
i.evapo.mh [-zhs] netradiation_diurnal=name average_temperature=name minimum_temperature=name maximum_temperature=name [precipitation=name] output=name [--overwrite] [--help] [--verbose] [--quiet] [--ui]

Flags:

-z
Set negative ETa to zero
-h
Use original Hargreaves (1985)
-s
Use Hargreaves-Samani (1985)
--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:

netradiation_diurnal=name [required]
Name of input diurnal net radiation raster map [W/m2/d]
average_temperature=name [required]
Name of input average air temperature raster map [C]
minimum_temperature=name [required]
Name of input minimum air temperature raster map [C]
maximum_temperature=name [required]
Name of input maximum air temperature raster map [C]
precipitation=name
Name of precipitation raster map [mm/month]
Disabled for original Hargreaves (1985)
output=name [required]
Name for output raster map [mm/d]

Table of contents

DESCRIPTION

i.evapo.mh calculates the reference evapotranspiration (ET) after Hargreaves et al. (1985), Hargreaves and Samani (1985) and the Modified Hargreaves version found in Droogers and Allen (2002).

SEE ALSO

i.evapo.pt, i.evapo.pm, i.evapo.time, r.sun

REFERENCES

AUTHORS

Yann Chemin, GRASS Development team, 2007-2016

Last changed: $Date: 2016-01-27 14:51:14 -0800 (Wed, 27 Jan 2016) $

SOURCE CODE

Available at: i.evapo.mh source code (history)


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