i.evapo.mh1grass
Computes evapotranspiration calculation modified or original hargreaves formulation, 2001.
Usage
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]
Keywords
imagery, evapotranspiration
Overview
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).
References
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Hargreaves GL, Hargreaves GH, Riley JP, 1985. Agricultural benefits for Senegal River Basin. Journal of Irrigation and Drainange Engineering, ASCE, 111(2):113-124.
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Droogers P, Allen RG, 2002. Towards a simplified global reference evapotranspiration equation. Irrigation Science.
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Droogers, P., Allen RG. 2002. Estimating reference evapotranspiration under inaccurate data conditions. Irrigation and Drainage Systems 16: 33-45.
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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.
Source code
Available at: i.evapo.mh source code (history)
Accessed: Monday Feb 24 17:51:32 2025
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© 2003-2025 GRASS Development Team, GRASS GIS 8.4.1 Reference Manual
Releases
5 releases since Debian 9 (Stretch); the text changed 4 times.