1. General Model Information
Name: Hydrodynamic model: Hydro.Mass balance model: Ph-ala
Acronym: PH-ALA
Main medium: aquatic
Main subject: biogeochemistry, hydrology
Organization level: ecosystem
Type of model: partial differential equations, ordinary differential equations
Main application:
Keywords: lake ecosystem, freshwater, water quality, hydrdynamics, phytoplankton
Contact:
Dr. Paolo Viotti
Dept. Hydraulic, Transportation and Roads
Faculty of Engineering
University of Rome "La Sapienza"
Via Eudossiana 18
I-00184 Roma, Italy
Phone: +39 6 44585638
Fax : +39 6 44585217
email: Viotti@cenedese2.ing.uniroma1.it
Author(s):
Abstract:
The system is composed by two different models, a hydrodynamic model and a mass
balance model:
Hydrodynamic model parameters: velocity components, temperature, baroclinic
component of the pressure, density anomaly.
Mass balance model parameters: phytoplankton concentration, phosphorus
concentration, rate of phosphorus release from the bottom sediment, phosphorus
concentration in the bottom sediment, residual components of the velocity,
phytoplankton growth rate, phosphorus fraction in the algal biomass,
sedimentation velocity.
Forcing functions: wind action
Necessary input: wind velocity and direction over long periods, initial
temperature distribution in the lake, pollutant injection location and mass
injection, daily hours of sunshine.
Model purpose
To develop a model able to analyze over many years the eutrophication trend in
a lake taking in account the three-dimensional characteristics of the
hydrodynamic field.
Source of the Abstract:
Joergensen S.E., B. Halling-Soerensen and S.N Nielsen (Edts.) 1996: Handbook
of Environmental and Ecological Modelling. CRC Press Boca Raton et al. 672 pp.
II. Technical Information
II.1 Executables:
Operating System(s): DOS
II.2 Source-code:
Programming Language(s): FORTRAN 77
II.3 Manuals:
II.4 Data:
III. Mathematical Information
III.1 Mathematics
III.2 Quantities
III.2.1 Input
III.2.2 Output
IV. References
V. Further information in the World-Wide-Web
VI. Additional remarks
Last review of this document by: R. Patzak : 20.August 1997
Status of the document:
last modified by
Tobias Gabele Wed Aug 21 21:44:47 CEST 2002