Estimating GHG emissions of marine ports-the case of Barcelona

► Adapting existing methodologies to the Port of Barcelona (PoB), we calculated a total of 331,390 tons of GHG emissions for the year of 2008, half of which were attributed to vessel movement (sea-based emissions) and the other half to port, land related activities (land-based emissions) ► Emissions per ton of cargo handled is proposed as an indicator to pin point high polluting vessels-a measure independent of the city the port belongs to. For 2008, the highest polluters were auto carriers with 6 kg of GHG emissions per ton of cargo handled. ► An additional measure of emissions per value of cargo handled is proposed to complement the emissions per weight indicator. For 2008, the volume of cargo handled in the PoB was 73,150 million € or 4.5 tons of CO2 per million €.