CAEDYM: Computational Aquatic Ecosystem DYnamics Model
Dataset Identification:
Resource Abstract:
Keywords: ecosystem, water quality The Computational Aquatic Ecosystem Dynamics Model (CAEDYM) is an aquatic ecological model
that may be run independently or coupled with hydrodynamic models DYRESM or ELCOM. CAEDYM consists of a series of mathematical
equations representing the major biogeochemical processes influencing water quality. At its most basic, CAEDYM is a set of
library subroutines that contain process descriptions for primary production, secondary production, nutrient and metal cycling,
and oxygen dynamics and the movement of sediment. CAEDYM configuration is flexible so that the user can focus on the processes
of interest. For example, the model can be configured for a simple set of nutrients-phytoplankton-zooplankton. By simulating
several state variables at the species level, CAEDYM can be used to support the understanding and management of a system.
In addition, the model can be coupled to the one-dimensional hydrodynamic model (DYRESM) for studies of the seasonal, annual
or decadal variation in water quality. For more detailed spatial information, CAEDYM can be run with the three-dimensional
hydrodynamic model ELCOM. To maximize speed and memory requirements CAEDYM shares a common internal data structure with both
DYRESM and ELCOM. They also use common output data storage formats, and share common Graphical User Interface (GUI) and visualization
routines for configuring the model and displaying the results. DYRESM-CAEDYM is presently being used in 24 countries around
the world. It can be downloaded as freeware. [ Modeling Paradigm: Optimization process ] [ Model Ecosystem: Physical hazards
(examples: fires, floods, air quality, water quality, carbon storage) ] [ Model Inputs: Initial concentrations of state variables.
Inflows and concentrations in inflows and over forcing regions. Parameter values. Other data may be required by the hydrodynamic
driver (DYRESM or ELCOM), e.g. meteorological forcing data. ]
Citation
Title CAEDYM: Computational Aquatic Ecosystem DYnamics Model