table of contents
- bullseye 7.8.5-1+deb11u1
- testing 8.2.0-3
- unstable 8.2.1-1
- experimental 8.2.1~rc1-1~exp1
i.evapo.mh(1grass) | GRASS GIS User's Manual | i.evapo.mh(1grass) |
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:¶
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]
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¶
- Hargreaves GL, Hargreaves GH, Riley JP, 1985. Agricultural benefits for Senegal River Basin. Journal of Irrigation and Drainange Engineering, ASCE, 111(2):113-124.
- Droogers P, Allen RG, 2002. Towards a simplified global reference evapotranspiration equation. Irrigation Science.
- Droogers, P., Allen RG. 2002. Estimating reference evapotranspiration under inaccurate data conditions. Irrigation and Drainage Systems 16: 33-45.
- Hargreaves GH, Samani ZA, 1985. Reference crop evapotranspiration from ambient air temperature. American Society of Agricultural Engineers (Microfiche collection)(USA). no. fiche no. 85-2517.
AUTHORS¶
Yann Chemin, GRASS Development team, 2007-2016
SOURCE CODE¶
Available at: i.evapo.mh source code (history)
Main index | Imagery index | Topics index | Keywords index | Graphical index | Full index
© 2003-2020 GRASS Development Team, GRASS GIS 7.8.5 Reference Manual
GRASS 7.8.5 |