Modeling Air Pollutant Emissions in the Provincial Level Road Transportation Sector in Korea: A Case Study of the Zero-Emission Vehicle Subsidy

Minyoung Roh, Seungho Jeon, Soontae Kim, Sha Yu, Almas Heshmati () and Suduk Kim
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Minyoung Roh: Department of Energy Systems Research, Ajou University, Suwon 16449, Korea
Seungho Jeon: Department of Energy Systems Research, Ajou University, Suwon 16449, Korea
Soontae Kim: Department of Environmental Engineering, Ajou University, Suwon 16449, Korea
Sha Yu: Joint Global Change Research Institute, Pacific Northwest National Laboratory, College Park, MD 20740, USA
Suduk Kim: Department of Energy Systems Research, Ajou University, Suwon 16449, Korea

Energies, 2020, vol. 13, issue 15, 1-22

Abstract: South Korea has been suffering from high PM 2.5 pollution. Previous studies have contributed to establishing PM 2.5 mitigation policies but have not considered provincial features and sector-interactions. In that sense, the integrated assessment model (IAM) could complement the shortcomings of previous studies. IAM, capable of analyzing PM 2.5 pollution levels at the provincial level in Korea, however, has not been developed yet. Hence, this study (i) expands on IAM which can represent provincial-level spatial resolution in Korea (GCAM-Korea) with air pollutant emissions modeling which focuses on the road transportation sector and (ii) examines the zero-emission vehicles (ZEVs) subsidy policy’s effects on PM 2.5 mitigation using the expanded GCAM-Korea. Simulation results show that PM 2.5 emissions decrease by 0.6–4.1% compared to the baseline, and the Seoul metropolitan area contributes 38–44% to the overall PM 2.5 emission reductions. As the ZEVs subsidy is weighted towards the light-duty vehicle 4-wheels (LDV4W) sector, various spillover effects are found: ZEVs’ share rises intensively in the LDV4W sector leading to an increase in its service costs, and at the same time, driving bus service costs to become relatively cheaper. This, in turn, drives an increase in bus service demand and emissions discharge. Furthermore, this type of impact of the ZEVs subsidy policy does not reduce internal combustion engine vehicles (ICEVs) in freight trucks, although diesel freight trucks are a major contributor to PM 2.5 emissions and also to NO x .

Keywords: integrated assessment model; subsidy policy; air quality improvement; zero-emission vehicles; fine particulate matter (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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