气候变化领域集成服务门户(CCPortal): Regional variability in black carbon and carbon monoxide ratio from long-term observations over East Asia: Assessment of representativeness for black carbon (BC) and carbon monoxide (CO) emission inventories

CCPortal

DOI	10.5194/acp-20-83-2020
	Regional variability in black carbon and carbon monoxide ratio from long-term observations over East Asia: Assessment of representativeness for black carbon (BC) and carbon monoxide (CO) emission inventories
	Choi Y.; Kanaya Y.; Park S.-M.; Matsuki A.; Sadanaga Y.; Kim S.-W.; Uno I.; Pan X.; Lee M.; Kim H.; Hee Jung D.
发表日期	2020
ISSN	1680-7316
起始页码	83
结束页码	98
卷号	20 期号:1
英文摘要	The black carbon (BC) and carbon monoxide (CO) emission ratios were estimated and compiled from longterm, harmonized observations of the ΔBC/ΔCO ratios under conditions unaffected by wet deposition at four sites in East Asia, including two sites in South Korea (Baengnyeong and Gosan) and two sites in Japan (Noto and Fukuoka). Extended spatio-temporal coverage enabled estimation of the full seasonality and elucidation of the emission ratio in North Korea for the first time. The estimated ratios were used to validate the Regional Emission inventory in ASia (REAS) version 2.1 based on six study domains ("East China", "North China", "Northeast China", South Korea, North Korea, and Japan). We found that the ΔBC/ΔCO ratios from four sites converged into a narrow range (6.2-7.9 ngm-3 ppb-1), suggesting consistency in the results from independent observations and similarity in source profiles over the regions. The BC/CO ratios from the REAS emission inventory (7.7 ngm-3 ppb-1 for East China - 23.2 ngm-3 ppb-1 for South Korea) were overestimated by factors of 1.1 for East China to 3.0 for South Korea, whereas the ratio for North Korea (3.7 ngm-3 ppb-1 from REAS) was underestimated by a factor of 2.0, most likely due to inaccurate emissions from the road transportation sector. Seasonal variation in the BC/CO ratio from REAS was found to be the highest in winter (China and North Korea) or summer (South Korea and Japan), whereas the measured ΔBC/ΔCO ratio was the highest in spring in all source regions, indicating the need for further characterization of the seasonality when creating a bottom-up emission inventory. At levels of administrative districts, overestimation in Seoul, the southwestern regions of South Korea, and Northeast China was noticeable, and underestimation was mainly observed in the western regions in North Korea, including Pyongyang. These diagnoses are useful for identifying regions where revisions in the inventory are necessary, providing guidance for the refinement of BC and CO emission rate estimates over East Asia. © Author(s) 2020.
语种	英语
scopus关键词	assessment method; black carbon; carbon emission; carbon monoxide; emission inventory; seasonal variation; seasonality; wet deposition; China; Japan; North Korea; South Korea
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248066
作者单位	Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, 2360001, Japan; Division of Climate and Air Quality Research, National Institute of Environmental Research, Kyungseo-dong, Seo-gu, Incheon, 404170, South Korea; Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa, 9201192, Japan; Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 5998531, Japan; School of Earth and Environmental Sciences, Seoul National University, Seoul, 08826, South Korea; Research Institute for Applied Mechanics, Kyushu University, Kasuga Park 6-1, Fukuoka, 8168580, Japan; Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Department of Earth and Environmental Sciences, Korea University, Seoul, 02841, South Korea
推荐引用方式 GB/T 7714	Choi Y.,Kanaya Y.,Park S.-M.,et al. Regional variability in black carbon and carbon monoxide ratio from long-term observations over East Asia: Assessment of representativeness for black carbon (BC) and carbon monoxide (CO) emission inventories[J],2020,20(1).
APA	Choi Y..,Kanaya Y..,Park S.-M..,Matsuki A..,Sadanaga Y..,...&Hee Jung D..(2020).Regional variability in black carbon and carbon monoxide ratio from long-term observations over East Asia: Assessment of representativeness for black carbon (BC) and carbon monoxide (CO) emission inventories.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(1).
MLA	Choi Y.,et al."Regional variability in black carbon and carbon monoxide ratio from long-term observations over East Asia: Assessment of representativeness for black carbon (BC) and carbon monoxide (CO) emission inventories".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.1(2020).