Submitted as: development and technical paper 04 Dec 2020
Submitted as: development and technical paper | 04 Dec 2020
Radiation model for the Baltic Sea with an explicit CDOM state variable: a case study with Model ERGOM (version 1.2)
- 1Leibniz Institute for Baltic Sea Research Warnemünde, Seestr. 15, 18119 Rostock, Germany
- 2The Finnish Environment Institute, Latokartanonkaari 11, 00790 Helsinki, Finland
- 3Brockmann Consult GmbH, Max-Planck-Str. 2, 21502 Geesthacht, Germany
- 4SOLVO, 3 rue Saint-Antoine, 06600 Antibes, France
- 5Brockmann Geomatics Sweden AB, Torshamnsgatan 39, SE-164 40 Kista, Sweden
- 1Leibniz Institute for Baltic Sea Research Warnemünde, Seestr. 15, 18119 Rostock, Germany
- 2The Finnish Environment Institute, Latokartanonkaari 11, 00790 Helsinki, Finland
- 3Brockmann Consult GmbH, Max-Planck-Str. 2, 21502 Geesthacht, Germany
- 4SOLVO, 3 rue Saint-Antoine, 06600 Antibes, France
- 5Brockmann Geomatics Sweden AB, Torshamnsgatan 39, SE-164 40 Kista, Sweden
Abstract. Colored dissolved organic matter (CDOM) in marine environments impacts primary production due to its absorption effect on the photosynthetically active radiation. In coastal seas, CDOM originates from terrestrial sources predominantly and causes spatial and temporal changing patterns of light absorption which should be considered in marine biogeochemical models. We propose a model approach in which Earth Observation (EO) products are used to define boundary conditions of CDOM concentrations in an ecosystem model of the Baltic Sea. CDOM concentrations in riverine water derived from EO products serve as forcing for the ecosystem model. For this reason, we introduced an explicit CDOM state variable in the model.
We show that the light absorption by CDOM in the model can be improved considerably compared to traditional approaches where, e.g., CDOM is estimated from salinity. A prerequisite is high quality CDOM data with sufficiently high spatial resolution which can be provided by the new generation of ESA satellite sensor systems (Sentinel 2 MSI and Sentinel 3 OLCI).
Thomas Neumann et al.


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RC1: 'Review of Neumann et al., CDOM model', M. Baird, 12 Mar 2021
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RC2: 'Refere comments', Svetlana Losa, 06 Apr 2021
Thomas Neumann et al.
Model code and software
Model code and boundary data for "Radiation model for the Baltic Sea with an explicit CDOM state variable: a case study with Model ERGOM (version 1.2)" paper. Thomas Neumann https://doi.org/10.5281/zenodo.4299873
Thomas Neumann et al.
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