Optimization of Parameters and InitialValues in a Marine NPZD-Type Ecosystem Model

Rückelt, Johannes, Oschlies, Andreas and Slawig, Thomas (2010) Optimization of Parameters and InitialValues in a Marine NPZD-Type Ecosystem Model TR 1013 . Christian Albrechts Universität zu Kiel.

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Abstract

Parameters and initial values of a one-dimensional marine ecosystemmodel are optimized using a gradient-based optimization algorithm takinginto account parameter bounds. Sensitivities of the optimized parametersw.r.t. errors in observations and initial values are studied numerically andfound to yield parameter ranges narrow relative to the a priori parameteruncertainty reflected in upper and lower bounds on the permitted pa-rameter range. This means, that optimal parameters can be determinedaccurately. We find, that optimizing for the initial values along with theparameters can greatly improve the model’s fit to the observations

Document Type: Report (Research Report)
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-BM Biogeochemical Modeling
Kiel University > Kiel Marine Science
OceanRep > The Future Ocean - Cluster of Excellence
Kiel University
Projects: Future Ocean
Date Deposited: 27 Aug 2019 09:30
Last Modified: 27 Aug 2019 09:30
URI: http://eprints.uni-kiel.de/id/eprint/47579

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