DBpia

In keeping with the announcement and implementation of national policies on the reduction of greenhouse gases (GHGs) and particular matter (PM), policy considerations are required for simultaneous reduction of GHGs and air pollutants. In the present study, integrated management of climate change and air quality policy scenarios SRI (Scenario of Reduction Indicator) and SMR (Scenario of Maximum Reduction) were constructed based on national plans, and policy effects were analyzed for targeted regions of Seoul, Gyeonggi (Gyeonggi Province), and Chungnam (South Chungcheong Province). The results showed reductions in CO₂ emissions by 13~22% relative to BAU scenario for 2030 SMR, while synergistic reductions in CO, NO_X, PM_2.5, and SO₂ by 11~15%, 11~19%, 6~8%, and 4~17%, respectively, were also observed. Majority of the industrial sectors currently use crude oil and bituminous coal. However, under the policy on “alternatives for raw materials and fuels with low emissions of GHGs”, they are switching to renewable energy sources such as liquid nitrogen gas (LNG) and biofuels. As a consequence, the emissions of GHGs and air pollutants from these industries show a contradictory trend; the former decrease, while the latter record an increase. In particular, Chungnam, which consumes high quantities of soft coal, should carefully review this policy prior to implementing it. In addition, the considerable reduction in primary PM_2.5 was observed owing to the replacement of older vehicles with newer ones in the transportation sector. Therefore, it can be stated that the policies applicable to Seoul, Gyeonggi, that experience high level of pollutants from the transportation sector, should be strengthened.