i.eb.eta1grass
Actual evapotranspiration for diurnal period (bastiaanssen, 1995).
Usage
i.eb.eta
i.eb.eta --help
i.eb.eta netradiationdiurnal=name
evaporativefraction=name
temperature=name
output=name
[--overwrite]
[--help]
[--verbose]
[--quiet]
[--ui]
Keywords
imagery, energy balance, actual evapotranspiration, SEBAL
Overview
i.eb.eta calculates the actual evapotranspiration (ETa ; mm/d) for diurnal period after [1], implemented in [3]. It takes input of Diurnal Net Radiation (see r.sun), evaporative fraction (see i.eb.evapfr) and surface skin temperature.
Notes
Full ETa processing will need those:
•
|
i.vi, i.albedo, r.latlong, i.emissivity |
|---|---|
•
|
i.evapo.potrad (GRASS Addon) |
•
|
i.eb.netrad, i.eb.soilheatflux, i.eb.hsebal01 |
•
|
i.eb.evapfr, i.eb.eta |
(for time integration: i.evapo.time_integration)
For more details on the algorithms see [1][2][3][4].
References
[1] Bastiaanssen, W.G.M., 1995. Estimation of Land surface parameters by remote sensing under clear-sky conditions. PhD thesis, Wageningen University, Wageningen, The Netherlands. (PDF)
[2] Chemin Y., Alexandridis T.A., 2001. Improving spatial resolution of ET seasonal for irrigated rice in Zhanghe, China. Asian Journal of Geoinformatics. 5(1):3-11,2004.
[3] Alexandridis T.K., Cherif I., Chemin Y., Silleos N.G., Stavrinos E., Zalidis G.C. Integrated methodology for estimating water use in Mediterranean agricultural areas. Remote Sensing. 2009, 1, 445-465. (PDF)
[4] Chemin, Y., 2012. A Distributed Benchmarking Framework for Actual ET Models, in: Irmak, A. (Ed.), Evapotranspiration - Remote Sensing and Modeling. InTech. (PDF)
Source code
Available at: i.eb.eta source code (history)
Accessed: Monday Feb 24 17:51:32 2025
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Releases
5 releases since Debian 9 (Stretch); the text changed 4 times.