This dataset depicts NOx-emissions from ship traffic in the Baltic Sea for the year 2009. NOx-emissions are modelled by Finnish Meterological Institute (FMI) based on AIS traffic data. Detailed information about the calculation methods can be found in: J.-P. Jalkanen, A. Brink, J. Kalli, H. Pettersson, J. Kukkonen, and T. Stipa: A modelling system for the exhaust emissions of marine traffic and its application in the Baltic Sea area, Atmos. Chem. Phys., 9 (2009) 9209-9223. J.-P. Jalkanen, L. Johansson, J. Kukkonen, A. Brink, J. Kalli, and T. Stipa: Extension of an assessment model of ship traffic exhaust emissions for particulate matter and carbon monoxide, Atmos. Chem. Phys. Discuss., 11 (2011) 22129-22172.
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