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Discussion papers | Copyright
https://doi.org/10.5194/gmd-2017-299
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.

Model description paper 05 Dec 2017

Model description paper | 05 Dec 2017

Review status
This discussion paper is a preprint. A revision of the manuscript is under review for the journal Geoscientific Model Development (GMD).

A 1-Dimensional Ice-Pelagic-Benthic transport model (IPBM) v0.1: Coupled simulation of ice, water column, and sediment biogeochemistry

Shamil Yakubov1, Philip Wallhead2, Elizaveta Protsenko3,4, and Evgeniy Yakushev3,4 Shamil Yakubov et al.
  • 1Institute of Coastal Research, Helmholtz-Zentrum Geesthacht (HZG), Geesthacht, Germany
  • 2Norwegian Institute for Water Research (NIVA vest), Thormøhlensgate 53 D, 5006, Bergen, Norway
  • 3Norwegian Institute for Water Research (NIVA), Gaustadalléen 21, 0349, Oslo, Norway
  • 4P.P.Shirshov Institute of Oceanology RAS, Nakhimovskiy prosp. 36, 117991, Moscow, Russia

Abstract. Aquatic biogeochemical processes can strongly interact, especially in polar regions, with processes occurring in adjacent ice and sediment layers, yet there are few modelling tools to simulate these systems in a fully coupled manner. We developed a 1-Dimensional Ice-Pelagic-Benthic transport model (IPBM) for coupled simulation of ice, water column, and upper sediment biogeochemistry. IPBM describes the processes of diffusion and particle sinking in both ice and water, as well sedimentation and bioturbation processes in the sediments. To describe ice, pelagic, and benthic biogeochemical dynamics (reaction terms), IPBM was partly coupled to the European Regional Seas Ecosystem Model (ERSEM) and partly to the Bottom RedOx Model biogeochemistry module (BROM-biogeochemistry) using the Framework for Aquatic Biogeochemical Models (FABM). To test the coupled system, hydrophysical forcing for a site in the Kara Sea area from a Regional Oceanic Modeling System (ROMS) simulation was used. The test run showed reasonable results for all main variables. IPBM reproduces the ice algae bloom in July followed by a pelagic phytoplankton bloom in August–September, as well as seasonal variability of nutrients in the water column.

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Shamil Yakubov et al.
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Aquatic biogeochemical processes can strongly interact, especially in polar regions, with processes occurring in adjacent ice and sediment layers, yet there are few modelling tools to simulate these systems in a fully coupled manner. We have developed a 1D transport model that allows simultaneous simulation of the biogeochemistry of 3 different media: ice, water, and sediments. Description of transportation processes in ice, water, and sediments for both solutes and solids was provided.
Aquatic biogeochemical processes can strongly interact, especially in polar regions, with...
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