1. General Model Information
Main medium: terrestrial
Main subject: biogeochemistry
Organization level: ecosystem
Type of model: not specified
Keywords: weather, crop canopy microclimate, soil energy contents, energy balance, evapotranspiration, carbon exchange
Prof.dr.ir. J. Goudriaan
Wageningen Agricultural University
Dept. Theoretical Production Ecology
6700 AK Wageningen
Fax : +31.8370.84892
With the observed weather at 2 or 10 m height as input, the
crop canopy microclimate is simulated, including the soil. The energy
balance, evapotranspiration and carbon exchange is calculated. In-canopy
profiles of radiation and windspeed are calculated, with their effects on leaf
temperatures. An in-canopy profile of air temperature and humidity is
ignored, because the K-theory has been proven not to be valid. There is
however, an offset with respect to the above-canopy temperature and
humidity. The soil energy balance is included, down to 1 meter depth.
Author of the abstract:
CAMASE Register of Agro-ecosystems Models
II. Technical Information
Operating System(s): MS-DOS or Macintosh Executables can be obtained from the author firstname.lastname@example.org> without charge, but under some conditions.
Programming Language(s): FORTRAN The source code can be obtained from the author email@example.com without charge, but under some conditions.
III. Mathematical Information
Rate variables: Fluxes of transpiration (latent heat loss), sensible heat loss, carbon dioxide
Rate variables: Fluxes of transpiration (latent heat loss), sensible heat loss, carbon dioxideassimilation, soil surface fluxes, in-soil fluxes of heat, radiation short-wave and long-wavetransmitted and reflected.
4Number of rate variables: About 100.
State variables: Soil energy contents. Leaf and air conditions are instantaneously calculated.
Number of state variables: About 30.
Above canopy climate, soil properties, vegetation properties.
Above canopy climate, soil properties, vegetation properties. See state and rate variables.
See state and rate variables.
Time interval of simulation: 1 hour, or less. Basic spatial unit: plot, 1 m2.
Goudriaan, J., 1977.Crop micrometeorology: a simulation study. Dr.Landbouwwetenschappen: Dissertatie LH-683: Landbouwhogeschool Wageningen. Pudoc, 249 pp.
V. Further information in the World-Wide-Web
VI. Additional remarks
Last review of this document by: T. Gabele: 21. 07. 1997 -
Status of the document:
last modified by
Joachim Benz Mon Jul 2 18:31:37 CEST 2007