The dataset covers IHO sea regions inside the bounding box (excluding the Red Sea): Mediterranean Sea, Atlantic Ocean, North Sea, Baltic Sea, English Channel, Irish & British Seas, Black Sea, Norwegian Sea, Bay of Biscay, Arctic Ocean, Sea of Azov, Greenland Sea. This dataset is a subtraction of two output datasets from the STEAM model.

The data reports the difference between same variables between 2019 and 2014 values. The variables included in this dataset are: Antifouling paint (CuO) release to water, Antifouling paint (CuPyr) release to water, Antifouling paint (DCOIT) release to water, Antifouling paint (Zineb) release to water, Antifouling paint (ZnO) release to water, Antifouling paint (ZnPyr) release to water, Ash emissions to air, Ballast water dicharges to the sea, Bilge water discharge to the sea, Carbon monoxide (CO) emissions to air, Carbon dioxide (CO2) emissions to air, Elementary carbon (EC) emissions to air, Grey water (GW) discharge to water, Heavy Fuel Oil (HFO) used in ships, Liquid Natural Gas (LNG) used in ships, Marine Diesel Oil (MDO) used in ships, Number of Automatic Identification System (AIS) messages received, Marine Gas Oil (MGO) used in ships, Foodwaste nitrogen released to water, Sewage nitrogen released to water, Underwater noise energy released to water (63 Hz 1/3 octave band), Underwater noise energy released to water (125 Hz 1/3 octave band), Underwater noise energy released to water (2000 Hz 1/3 octave band), Nitrogen oxide (NOx) emissions to air, Organic carbon (OC) emissions to air, Transport work (Payload) done by ships, Number of person days spent onboard ships, Particulate matter (PM, smaller than 2.5 micrometers) emissions to air, Particle number emissions to air, Closed loop scrubber effluent release to water, Open loop scrubber effluent release to water, Sewage discharge to water, Sulphate (SO4) emissions to air, Sulphur oxide (SOx) emissions to air, Stern tube oil release to sea, Non-methane volatile organic compound (VOC) emissions to air.

These data are based on global AIS data from Orbcomm Ltd, IHS Markit ship fleet description and FMI STEAM ship model. Technical references for the STEAM model:

Jalkanen, J.-P. P., Brink, A., Kalli, J., Pettersson, H., Kukkonen, J., Stipa, T., … Stipa, T. (2009). A modelling system for the exhaust emissions of marine traffic and its application in the Baltic Sea area. Atmos. Chem. Phys., 9(4), 9209–9223. https://doi.org/10.5194/acp-9-9209-2009

Jalkanen, J. P., Johansson, L., Kukkonen, J., Brink, A., Kalli, J., & Stipa, T. (2012). Extension of an assessment model of ship traffic exhaust emissions for particulate matter and carbon monoxide. Atmospheric Chemistry and Physics, 12(5), 2641–2659. https://doi.org/10.5194/acp-12-2641-2012

Johansson, L., Jalkanen, J.-P., Kalli, J., & Kukkonen, J. (2013). The evolution of shipping emissions and the costs of regulation changes in the northern EU area. Atmospheric Chemistry and Physics, 13(22), 11375–11389. https://doi.org/10.5194/acp-13-11375-2013

Johansson, L., Jalkanen, J.-P., & Kukkonen, J. (2017). Global assessment of shipping emissions in 2015 on a high spatial and temporal resolution. Atmospheric Environment, 167, 403–415. https://doi.org/10.1016/j.atmosenv.2017.08.042

Jalkanen, J.-P., Johansson, L., Liefvendahl, M., Bensow, R., Sigray, P., Östberg, M., … Pajala, J. (2018). Modelling of ships as a source of underwater noise. Ocean Science, 14(6), 1373–1383. https://doi.org/10.5194/os-14-1373-2018

Jalkanen, J.-P., Johansson, L., Wilewska-Bien, M., Granhag, L., Ytreberg, E., Eriksson, K.M., Yngsell, D., Hassellöv, I.-M., Magnusson, K., Raudsepp, U., Maljutenko, I., Styhre, L., Winnes, H., Moldanova J. (2020). Modeling of discharges from Baltic Sea shipping, Ocean Science Discussions, https://doi.org/10.5194/os-2020-99, in review

The dataset has been prepared in the context of developing the first European Maritime Transport Environmental Report (EMSA-EEA report, 2021: https://www.eea.europa.eu/publications/maritime-transport).