The impact of Swedish SO2 policy instruments on SO2 emissions 1990-2012

The implications of the results are that: a) SO2 policy instruments should still be important to reduce SO2 emissions in many countries; b) a lower boundary total emission impact of SO2 policy instruments can be estimated, but with current knowledge and data the impacts of individual instruments are rarely possible to estimate. Research on how to increase the precision in total impact estimates of SO2 policy instruments is needed to improve future impact analyses. More detailed emission inventory data would improve impact analysis of individual instruments.