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Preprints
https://doi.org/10.5194/os-2020-99
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-2020-99
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  28 Oct 2020

28 Oct 2020

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This preprint is currently under review for the journal OS.

Modeling of discharges from Baltic Sea shipping

Jukka-Pekka Jalkanen1, Lasse Johansson1, Magda Wilewska-Bien2, Lena Granhag2, Erik Ytreberg2, K. Martin Eriksson2,a, Daniel Yngsell2,b, Ida-Maja Hassellöv2, Kerstin Magnusson3, Urmas Raudsepp4, Ilja Maljutenko4, Linda Styhre5, Hulda Winnes5, and Jana Moldanova5 Jukka-Pekka Jalkanen et al.
  • 1Atmospheric Composition, Finnish Meteorological Institute, Erik Palmen’s Square 1, FI-00560 Helsinki, Finland
  • 2Mechanics and Maritime Sciences, Chalmers University of Technology, Campus Lindholmen 41296 Gothenburg, Sweden
  • 3IVL Swedish Environmental Research Institute, Lovén Center of Marine Sciences, Kristineberg, SE-451 78 Fiskebäckskil, Sweden
  • 4Department of Marine Systems, Tallinn Technical University, Akadeemia Tee 15A, 12618 Tallinn, Estonia
  • 5IVL Swedish Environmental Research Institute, Aschebergsgatan 44, 411 33 Göteborg, Sweden
  • acurrent address: Gothenburg Centre for Sustainable Development (GMV), Ascherbergsgatan 44, SE-41296 Gothenburg, Sweden
  • bcurrent address: The County Administrative Board of Västernorrland, SE-871 86 Härnösand, Sweden

Abstract. This paper describes the new developments of the Ship Traffic Emission Assessment Model (STEAM) which enable modeling of pollutant discharges to water from ships. These include nutrients from black/grey water discharges as well as from food waste. Further, also the modeling of contaminants in ballast, black, grey and scrubber water, bilge discharges and stern tube oil leaks are described, as well as releases of contaminants from antifouling paints. Each of the discharges are regulated by different sections of IMO MARPOL convention and emission patterns of different pollution releases vary significantly. The discharge patterns and total amounts for year 2012 in the Baltic Sea area are reported and open loop SOx scrubbing effluent was found to be the second largest pollutant stream by volume. The scrubber discharges have increased significantly in recent years and their environmental impacts need to be investigated in detail.

Jukka-Pekka Jalkanen et al.

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Jukka-Pekka Jalkanen et al.

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Discharges from Baltic Sea shipping in 2012 Jukka-Pekka Jalkanen, Lasse Johansson, Magda Wilewska-Bien, Lena Granhag, Erik Ytreberg, K. Martin Eriksson, Daniel Yngsell, Ida-Maja Hassellöv, Kerstin Magnusson, Urmas Raudsepp, Ilja Maljutenko, Linda Styhre, Hulda Winnes, and Jana Moldanova https://doi.org/10.5281/zenodo.4063643

Jukka-Pekka Jalkanen et al.

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Short summary
This modeling study describes a methodology for describing pollutant discharges from ships to the sea. The pilot area used is the Baltic Sea area and discharges of bilge, ballast, sewage, wash water as well as stern tube oil are reported for the year 2012. This work also reports the release of SOx scrubber effluents. This technique may be used by ships to comply with tight sulphur limits inside Emission Control Areas, but it also introduces a new pollutant stream from ships to sea.
This modeling study describes a methodology for describing pollutant discharges from ships to...
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