A new marine ecosystem model for the University of Victoria Earth System Climate Model.

Keller, David , Oschlies, Andreas and Eby, M. (2012) A new marine ecosystem model for the University of Victoria Earth System Climate Model. Open Access Geoscientific Model Development, 5 . pp. 1195-1220. DOI 10.5194/gmd-5-1195-2012.

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Abstract

Earth System Climate Models (ESCMs) are valuable tools that can be used to gain a better understanding of the climate system, global biogeochemical cycles and how anthropogenically-driven changes may affect them. Here we describe improvements made to the marine biogeochemical ecosystem component of the University of Victoria's ESCM (version 2.9). Major changes include corrections to the code and equations describing phytoplankton light limitation and zooplankton grazing, the implementation of a more realistic zooplankton growth and grazing model, and the implementation of an iron limitation scheme to constrain phytoplankton growth. The new model is evaluated after a 10 000-yr spin-up and compared to both the previous version and observations. For the majority of biogeochemical tracers and ecosystem processes the new model shows significant improvements when compared to the previous version and evaluated against observations. Many of the improvements are due to better simulation of seasonal changes in higher latitude ecosystems and the effect that this has on ocean biogeochemistry. This improved model is intended to provide a basic new ESCM model component, which can be used as is or expanded upon (i.e., the addition of new tracers), for climate change and biogeochemical cycling research.

Document Type: Article
Additional Information: WOS:000310471600009
Keywords: marine ecosystem model; Earth system climate model; ESCM; OCEANIC FIXED NITROGEN; GLOBAL OCEAN; INTERMEDIATE COMPLEXITY; PHYTOPLANKTON GROWTH; BIOLOGICAL PUMP; WORLD OCEAN; CARBON; ZOOPLANKTON; FOOD; IRON
Research affiliation: OceanRep > SFB 754
OceanRep > SFB 754 > B1
OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-BM Biogeochemical Modeling
Refereed: Yes
Open Access Journal?: Yes
DOI etc.: 10.5194/gmd-5-1195-2012
ISSN: 1991-959X
Projects: SFB754, Future Ocean
Date Deposited: 05 Oct 2012 05:59
Last Modified: 23 Sep 2019 22:00
URI: http://oceanrep.geomar.de/id/eprint/15472

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