GSP
Quick Navigator

Search Site

Unix VPS
A - Starter
B - Basic
C - Preferred
D - Commercial
MPS - Dedicated
Previous VPSs
* Sign Up! *

Support
Contact Us
Online Help
Handbooks
Domain Status
Man Pages

FAQ
Virtual Servers
Pricing
Billing
Technical

Network
Facilities
Connectivity
Topology Map

Miscellaneous
Server Agreement
Year 2038
Credits
 

USA Flag

 

 

Man Pages
i.eb.evapfr(1) GRASS GIS User's Manual i.eb.evapfr(1)

i.eb.evapfr - Computes evaporative fraction and root zone soil moisture.

imagery, energy balance, soil moisture, evaporative fraction, SEBAL

i.eb.evapfr
i.eb.evapfr --help
i.eb.evapfr [-m] netradiation=name soilheatflux=name sensibleheatflux=name evaporativefraction=name [soilmoisture=name] [--overwrite] [--help] [--verbose] [--quiet] [--ui]

-m

Root zone soil moisture output (Makin, Molden and Bastiaanssen, 2001)
--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

netradiation=name [required]

Name of Net Radiation raster map [W/m2]
soilheatflux=name [required]

Name of soil heat flux raster map [W/m2]
sensibleheatflux=name [required]

Name of sensible heat flux raster map [W/m2]
evaporativefraction=name [required]

Name for output evaporative fraction raster map
soilmoisture=name

Name for output root zone soil moisture raster map

i.eb.evapfr calculates the evaporative fraction after Bastiaanssen 1995. The main implementation follows Alexandridis et al. (2009). The module takes as input the net radiation (see r.sun, i.eb.netrad), soil heat flux (see i.eb.soilheatflux) and sensible heat flux (see i.eb.hsebal01). A flag adds a root zone empirical soil moisture output from the article of Bastiaanssen, et al. (2000).

i.eb.hsebal01, i.eb.netrad, i.eb.soilheatflux, r.sun

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)

Bastiaanssen, W.G.M., Molden, D.J., Makin, I.W., 2000. Remote sensing for irrigated agriculture: examples from research and possible applications. Agricultural water management 46.2: 137-155.

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.

Alexandridis T.K., Cherif I., Chemin Y., Silleos N.G., Stavrinos E., Zalidis G.C., 2009. Integrated methodology for estimating water use in Mediterranean agricultural areas. Remote Sensing. 1, 445-465. (PDF)

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

Yann Chemin, Asian Institute of Technology, Thailand

Available at: i.eb.evapfr source code (history)

Main index | Imagery index | Topics index | Keywords index | Graphical index | Full index

© 2003-2021 GRASS Development Team, GRASS GIS 7.8.6 Reference Manual

GRASS 7.8.6

Search for    or go to Top of page |  Section 1 |  Main Index

Powered by GSP Visit the GSP FreeBSD Man Page Interface.
Output converted with ManDoc.