4.7 Article

Enhanced assessment of the eReefs biogeochemical model for the Great Barrier Reef using the Concept/State/Process/System model evaluation framework

Journal

ENVIRONMENTAL MODELLING & SOFTWARE
Volume 129, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.envsoft.2020.104707

Keywords

Model evaluation; Assessment; Ecosystem model; Hydrodynamic model; Emergent properties; Great barrier reef

Funding

  1. Australian Government through the National Collaborative Research Infrastructure Strategy
  2. Australian Government through Super Science Initiative
  3. Department of the Environment and Energy
  4. Queensland Department of Natural Resources and Mines `Queensland Regional Natural Resource Management Investment Program 2013-2018'
  5. Department of Science, Information Technology, Innovation and the Arts (DSITIA)
  6. Australian Institute of Marine Science
  7. CSIRO
  8. IMOS ZOOM (Zooplankton Ocean Observations and Modelling) task

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The Great Barrier Reef is a UNESCO World Heritage Area that has been assessed as having a very poor outlook and needing urgent intervention. The eReefs hydrodynamic-biogeochemical models are used to complement monitoring, facilitate data interpretation and support policy decisions. Management and policy for the Great Barrier Reef are politically contentious, so a high standard of model evaluation is required. We report the application of a recently-developed four-level CSPS (Concept/State/Process/System) model evaluation framework to the eReefs biogeochemical model. The framework considers: Level 0, conceptual evaluation; Level 1, simulated state variables; Level 2, process rates; and Level 3, system-level patterns and emergent properties. This paper is the first complete application of this model assessment framework. It highlights both strengths and weaknesses of the eReefs biogeochemical model that might not have been apparent from a traditional model evaluation. The framework can be applied to evaluation of any complex, process-based numerical model.

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