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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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Conclusions and discussion on measurement strategy

The ultimate objective of the measurements to be performed in the next phase of this project is to improve the estimates of BC emissions in the Nordic countries. This background analysis has focused on four important Nordic emission sources of BC and PM2.5; residential biomass combustion, on-road and non-road mobile sources, and shipping. For the coming measurement program we propose to focus on residential biomass combustion. The reasons for this are discussed in the sections below.

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