GRASS GIS manual: i.eb.soilheatflux

NAME

i.eb.soilheatflux - Soil heat flux approximation (Bastiaanssen, 1995)

KEYWORDS

imagery, soil heat flux, energy balance, SEBAL

SYNOPSIS

i.eb.soilheatflux
i.eb.soilheatflux help
i.eb.soilheatflux [-r] albedo=name ndvi=name temperature=name netradiation=name localutctime=name output=name [--overwrite] [--verbose] [--quiet]

Flags:

-r: HAPEX-Sahel empirical correction (Roerink, 1995)
--overwrite: Allow output files to overwrite existing files
--verbose: Verbose module output
--quiet: Quiet module output

Parameters:

albedo=name: Name of Albedo raster map [0.0;1.0]
ndvi=name: Name of NDVI raster map [-1.0;+1.0]
temperature=name: Name of Surface temperature raster map [degree Kelvin]
netradiation=name: Name of Net Radiation raster map [W/m2]
localutctime=name: Name of time of satellite overpass raster map [local UTC]
output=name: Name for output raster map

DESCRIPTION

i.eb.soilheatflux calculates the soil heat flux approximation (g0) after [1]. Main reference for implementation is [3]. It takes input of Albedo, NDVI, Surface Skin temperature, Net Radiation (see r.sun), time of satellite overpass, and a flag for the Roerink empirical modification from the HAPEX-Sahel experiment.

NOTES

TODO

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.

[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. (submitted))

AUTHORS

Yann Chemin, Asian Institute of Technology, Thailand

Last changed: $Date: 2009-06-19 16:59:46 +0200 (Fri, 19 Jun 2009) $

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