Evaluating oxygen and oxygen minimum zones in global biogeochemical models.

Oschlies, Andreas , Kriest, Iris , Koeve, Wolfgang , Duteil, Olaf and Schartau, Markus (2015) Evaluating oxygen and oxygen minimum zones in global biogeochemical models. [Poster] In: EGU General Assembly 2015. , 12.–17.04.2015 , Vienna, Austria . Geophysical Research Abstracts, 17 (EGU2015-15645).

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Abstract

Global biogeochemical ocean models are used to predict the future evolution of so-called oxygen minimum zones (OMZ), and the associated environmental and possible socio-economic impacts. Different models give different results and vary largely in their biogeochemical, physical and numerical setup. In order to assess the ability of the models to describe the present state as a necessary condition for skillful predictions into the future, they are usually compared against observed distributions of oxygen and other variables, such as thickness of oxygen minimum
zones, nutrients, tracers for circulation and/or water mass age. We here examine different metrics for skill evaluation particularly of model representations of oxygen (and OMZs), for a wide range of global biogeochemical models. Among the metrics considered are Taylor plots, volume distributions of oxygen, volume of OMZ,
preformed oxygen, and metrics that combine various diagnostic biogeochemical tracers. We finally investigate the impact these metrics may have for the “choice” of any best model, and discuss their applicability for different
research or societal questions.

Document Type: Conference or Workshop Item (Poster)
Research affiliation: OceanRep > SFB 754 > A2
OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-BM Biogeochemical Modeling
OceanRep > SFB 754 > B1
OceanRep > SFB 754
Projects: SFB754
Date Deposited: 16 Dec 2015 08:43
Last Modified: 16 Dec 2015 08:43
URI: http://oceanrep.geomar.de/id/eprint/30604

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