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NAME

i.evapo.zk - Computes global evapotranspiration calculation after Zhang, Kimball, Nemani and Running formulation, 2010.

KEYWORDS

imagery, evapotranspiration

SYNOPSIS

i.evapo.zk
i.evapo.zk --help
i.evapo.zk biome_type=name ndvi=name airtemperature=name specifichumidity=name atmosphericpressure=name netradiation=name soilheatflux=name elevation=name output=name [--overwrite] [--help] [--verbose] [--quiet] [--ui]

Flags:

--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:

biome_type=name [required]
Name of input IGBP biome type raster map [-]
ndvi=name [required]
Name of input Normalized Difference Vegetation Index raster map [-]
airtemperature=name [required]
Name of input air temperature raster map [C]
specifichumidity=name [required]
Name of input specific humidity raster map [-]
atmosphericpressure=name [required]
Name of input atmospheric pressure raster map [Pa]
netradiation=name [required]
Name of input net radiation raster map [MJ/m2/d]
soilheatflux=name [required]
Name of input soil heat flux raster map [MJ/m2/d]
elevation=name [required]
Name of input elevation raster map [m]
output=name [required]
Name of output evapotranspiration raster map [mm/d]

Table of contents

DESCRIPTION

i.evapo.zk Calculates the global diurnal evapotranspiration after Zhang, Kimball, Nemani and Running (2010).

NOTES

Main function ETa (biome_type, ndvi, tday, sh, patm, Rn, G) IGBP Biome types with ID used in this model IGBP Classification * Not used in this model IGBP Biome types and configuration of internal parameters of the model * For WSV when NDVI superior to 0.64"

TODO

SEE ALSO

i.evapo.pm
i.evapo.mh
i.evapo.senay
i.eb.netrad
i.eb.soilheatflux

REFERENCES

Zhang, K., Kimball, J.S., Nemani, R.R., Running, S.W. (2010). A continuous satellite-derived global record of land surface evapotranspiration from 1983 to 2006. WRR 46, W09522

Chemin, Y., 2012. A Distributed Benchmarking Framework for Actual ET Models, in: Irmak, A. (Ed.), Evapotranspiration - Remote Sensing and Modeling. InTech. (PDF)

AUTHOR

Yann Chemin, GRASS Development team, 2011

Last changed: $Date: 2015-01-25 14:46:47 +0100 (Sun, 25 Jan 2015) $

SOURCE CODE

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


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