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Improved emission inventories of SLCP

Background analysis

image of Improved emission inventories of SLCP

Emission inventories of Short Lived Climate Pollutants (SLCP), and especially of Black Carbon (BC), are uncertain and not always comparable. Comparable and reliable emission inventories are essential when aiming for efficient strategies and policies for reduced emissions. This report presents the Nordic emissions and emission inventories of SLCP, the important emission sources and their development over time. It also discusses knowledge gaps, factors contributing to the uncertainties, and possibilities for improved emission estimates. The overall objective of the three-year project is to improve the Nordic emission inventories of Short Lived Climate Pollutants (SLCP), with a focus on Black Carbon (BC). This report presents the results from the first phase of the project, an analysis of the present status of knowledge, with focus on BC and particulate matter (PM2.5) emissions from residential biomass combustion, on-road and non-road diesel vehicles, and shipping. The next phase will draw on the results from this background analysis in designing and implementing an emission measurement program, where the objective is to expand the knowledge and develop well documented and reliable emission factors, primarily for BC, for use in future national emission inventories.

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Current emission inventories of SLCP in the Nordic Countries

National official emission inventories for air pollutants, including PM2.5, CO and NMVOC, are annually reported from all Nordic countries to the Convention on Long-Range Transboundary Air Pollution, CLRTAP, under the EU National Emission Ceilings Directive NECD, and national emissions of greenhouse gases, including CH4, to the United Nations Framework Convention on Climate Change, UNFCCC. Black carbon, BC, is not yet part of the reporting program, but from submission 2015 it will be included as voluntary reporting to CLRTAP as a consequence of BC being highlighted in the revised Gothenburg protocol from May 2012. Revised Reporting Guidelines, including BC, were adopted in December 2013 by the Executive Body of CLRTAP.

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