Journal cover Journal topic
Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/gmd-2018-109
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Model description paper
02 May 2018
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Geoscientific Model Development (GMD).
Ecological ReGional Ocean Model with vertically resolved sediments (ERGOM SED 1.0): Coupling benthic and pelagic biogeochemistry of the south-western Baltic Sea
Hagen Radtke1, Marko Lipka2, Dennis Bunke3,a, Claudia Morys4,b, Bronwyn Cahill1,c, Michael E. Böttcher2, Stefan Forster4, Thomas Leipe5, and Thomas Neumann1 1Leibniz Institute for Baltic Sea Research Warnemuende (IOW), Department of Physical Oceanography and Instrumentation, Seestr. 15, 18119 Warnemünde, Germany
2Leibniz Institute for Baltic Sea Research Warnemuende (IOW), Department of Marine Geology, Geochemistry and Isotope Biogeochemistry Group, Seestr. 15, 18119 Warnemünde, Germany
3Leibniz Institute for Baltic Sea Research Warnemuende (IOW), Department of Marine Geology, Paleooceanography and Sedimentology Group, Seestr. 15, 18119 Warnemünde, Germany
4University of Rostock, Institute for Biosciences, Albert-Einstein-Str. 3, 18059 Rostock, Germany
5Leibniz Institute for Baltic Sea Research Warnemuende (IOW), Department of Marine Geology, Microanalysis Group, Seestr. 15, 18119 Warnemünde, Germany
acurrent address: Leipzig University, Institute of Geophysics and Geology, Talstr. 15, 04013 Leipzig, Germany
bcurrent address: Royal Netherlands Institute for Sea Research (NIOZ), Department of Estuarine and Delta Systems, and Utrecht University, Korringaweg 7, 4401 NT Yerseke, The Netherlands
ccurrent address: Freie Universität Berlin, Institute for Space Science, Carl-Heinrich-Becker-Weg 6-10, 12165 Berlin, Germany
Abstract. Sediments play an important role in organic matter mineralisation and nutrient recycling, especially in shallow marine systems. Marine ecosystem models, however, often only include a coarse representation of processes beneath the sea floor. While these parametrisations may give a reasonable description of the present ecosystem state, they lack predictive capacity for possible future changes, which can only be obtained from mechanistic modelling.

This paper describes an integrated benthic-pelagic ecosystem model developed for the German Exclusive Economic Zone (EEZ) in the Western Baltic Sea. The model is a hybrid of two existing models: the pelagic part of the marine ecosystem model ERGOM and an early diagenetic model by Reed et al., 2011. The latter one was extended to include the carbon cycle, a determination of precipitation and dissolution reactions which accounts for salinity differences, an explicit description of adsorption of clay minerals and an alternative pyrite formation pathway. We present a one-dimensional application of the model to seven sites with different sediment types. The model was calibrated with observed pore water profiles and validated with results of sediment composition and bioturbation rates collected within the framework of the SECOS project.

Citation: Radtke, H., Lipka, M., Bunke, D., Morys, C., Cahill, B., Böttcher, M. E., Forster, S., Leipe, T., and Neumann, T.: Ecological ReGional Ocean Model with vertically resolved sediments (ERGOM SED 1.0): Coupling benthic and pelagic biogeochemistry of the south-western Baltic Sea, Geosci. Model Dev. Discuss., https://doi.org/10.5194/gmd-2018-109, in review, 2018.
Hagen Radtke et al.
Hagen Radtke et al.
Hagen Radtke et al.

Viewed

Total article views: 168 (including HTML, PDF, and XML)

HTML PDF XML Total Supplement BibTeX EndNote
131 30 7 168 10 2 3

Views and downloads (calculated since 02 May 2018)

Cumulative views and downloads (calculated since 02 May 2018)

Viewed (geographical distribution)

Total article views: 168 (including HTML, PDF, and XML)

Thereof 168 with geography defined and 0 with unknown origin.

Country # Views %
  • 1

Saved

Discussed

Latest update: 23 May 2018
Publications Copernicus
Download
Short summary
This paper describes a coupled benthic-pelagic biogeochemical model, ERGOM-SED. We demonstrate its use in a 1-dimensional physical model, which is horizontally integrated and vertically resolved.

We describe the application of the model to seven stations in the south-western Baltic Sea. The model was calibrated using pore water profiles from these stations. We compare the model results to these and to measured sediment compositions and bioturbation intensities.
This paper describes a coupled benthic-pelagic biogeochemical model, ERGOM-SED. We demonstrate...
Share