Presentation on theme: "Emissions of NOx and SOx from Baltic shipping Effects on air quality and marine eutrophication Tapani Stipa, Jukka-Pekka Jalkanen, Marke Hongisto, Jari."— Presentation transcript:
Emissions of NOx and SOx from Baltic shipping Effects on air quality and marine eutrophication Tapani Stipa, Jukka-Pekka Jalkanen, Marke Hongisto, Jari Walden (Finnish Meterological Institute) Juha Kalli (University of Turku) Anders Brink (Åbo Akademi University)
Shipping is a global source of emissions Shipping enjoys long-standing freedoms of the high seas Emissions from ships are difficult to measure Previous estimates were based on bunker used and estimated ship routes Updates every 5-10 years Emissions hardly regulated (until 2005 at least)
Goals (Emission inventory) AIS information Revised emission factors
measurement station in Aegna Mesurement frequency: 10 min discontinuous periods Measure- ment cabin 6 m 7 m 10,65 m -Windspeed - Temperature - Wind direction and –speed - Temperature - Measurement of gas compounds : O3, SO2 and NO/NOx -Wind speed - Temperature - Measurement of gas compounds : O3, SO2 and NO/NOx
Shipping is a potential contributor to marine eutrophication Thought experiment: A months worth of shipping emissions would increase the nitrogen level in the sea within 10 km of the shipping lane significantly. The increase is comparable to about 5-20% of winter nutrient concentrations.
Conclusions In the Baltic region, ship emissions account for up to 50% of the Nox deposition Baltic shipping creates more SOx emissions than Nordic countries (FI, SE, NO, DK) together from land- based sources Much policy-level activity both in the Baltic and internationally Should WMO liaise more closely with IMO to promote the study of shipping emissions and their effects?
Thank you! [Quiz: where is the above picture taken from?]