1. General Model Information
Name: SAWAH 2.0 - Simulation Algorithm for Water flow in Aguic Habitats.
Main medium: terrestrial
Main subject: hydrology, agriculture, soil science
Organization level: ecosystem
Type of model: partial differential equations (1D)
Keywords: water-balance, water transport, richards equation
Dr.ir. H.F.M. ten Berge.
Research Institute for Agrobiology and Soil Fertility (AB-DLO), Dept. Agrosystems Research, P.O.Box 14, 6700 AA Wageningen, THE NETHERLANDS.
Phone: +31.317.475951 / 475953
email: email@example.com / firstname.lastname@example.org
The soil water balance model SAWAH simulates one-dimensional vertical movement of water in soil based on the Darcy equation and mass conservation. The model handles both saturated and unsaturated flow, including perched water tables. It was designed to model water flow in rice fields.
Purpose of the model:
Model parentage: -
Source of the AbstractCAMASE Register of Agro-ecosystems Models
II. Technical Information
Costs: : Dfl. 270,=.
Programming Language(s): Microsoft FORTRAN-77.
III. Mathematical Information
Rate variables: Fluxes between compartments, changes of water content per layer, change of ponded water depth, overall water balance terms rainfall, capillary rise etc.
State variables: Water content per layer, depth of ponded water, cumulative water balance terms.
Soil characteristics, ground water daily values. Input check in model: No.
All states and rates variables.
Basic spatial unit: m2.
Time interval of simulation: Variable: seconds-minutes for flux calculations; days for interacting with higher level models (crops).
Berge, H.F.M. ten, D.M. Jansen, K. Rappoldt & W. Stol, 1992. The soil water balance module SAWAH: description and users guide. Simulation Report CABO-TT no. 22. Centre for Agrobiological Research and Dept. of Theoretical Production Ecology. Wageningen. The Netherlands. 78 pp. and 4 appendices.
Berge, H.F.M. ten, K. Metselaar, M.J.W. Jansen, E.M. de San Agustin & T. Woodhead, 1995 / 1996 ?. The SAWAH riceland hydrology model. Accepted for publication in Water Resources Researches.
V. Further information in the World-Wide-Web
VI. Additional remarks
Last review of this document by: T. Gabele: Dec 10 1997
Status of the document:
last modified by
Joachim Benz Mon Jul 2 18:31:37 CEST 2007