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ModelsCAEDYM
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 60 countries around the world. It can be downloaded as freeware here.
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