중국 대기오염물질 배출의 시공간적 변화 분석

• Published in: 한국대기환경학회지 Vol. 34; no. 1; pp. 87 - 100
• Main Authors: 우정헌(Jung-Hun Woo), 부찬종(Chanjong Bu), 김진수(Jinsu Kim), 김영성(Young Sung Ghim), 김윤하(Younha Kim)
• Format: Journal Article
• Language: Korean
• Published: 한국대기환경학회 2018
• Subjects: 대기과학; Top-down emissions inventory; China air pollutants emissions; Regional emissions distribution; Bottom-up emissions inventory
• ISSN: 1598-7132; 2383-5346
• DOI: 10.5572/KOSAE.2018.34.1.087

Fast economic growth and urbanization of China have been causing air pollution not only over its domestic but transboundary atmosphere. Recent high fine particle pollution episodes in China made the government move toward more stringent air pollution control policies - which are mostly fuel switching and emissions control. In this research, we tried to understand characteristics of Chinese emissions and their change by analyzing its emissions inventory by year, sector, and region. From the inter-comparison of existing bottom-up emission inventories, we found relatively good agreements (<20% difference) for $SO_2$ and $NO_x$, but 30% or more discrepancies for some pollutants. Inter-comparison with top-down $NO_x$ emissions estimates also showed 20~50% differences by year. The regional distribution and inter-annual changes of emissions revealed different stages of energy/fuel mix and policy penetration. Early increase of pollutants emissions in the eastern part of China might give strong influences to the Korean peninsular in early 2000s but, more stringent control in that region would help improving air pollution in Korea in near future.