气候变化领域集成服务门户(CCPortal): Observations of atmospheric 14CO2at Anmyeondo GAW station, South Korea: Implications for fossil fuel CO2and emission ratios

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DOI	10.5194/acp-20-12033-2020
	Observations of atmospheric 14CO2at Anmyeondo GAW station, South Korea: Implications for fossil fuel CO2and emission ratios
	Lee H.; Dlugokencky E.J.; Turnbull J.C.; Lee S.; Lehman S.J.; Miller J.B.; Pétron G.; Lim J.-S.; Lee G.-W.; Lee S.-S.; Park Y.-S.
发表日期	2020
ISSN	1680-7316
起始页码	12033
结束页码	12045
卷号	20 期号:20
英文摘要	To understand the Korean Peninsula's carbon dioxide (CO2) emissions and sinks as well as those of the surrounding region, we used 70 flask-air samples collected during May 2014 to August 2016 at Anmyeondo (AMY; 36.53° N, 126.32° E; 46 m a.s.l.) World Meteorological Organization (WMO) Global Atmosphere Watch (GAW) station, located on the west coast of South Korea, for analysis of observed 14C in atmospheric CO2 as a tracer of fossil fuel CO2 contribution (Cff). Observed 14C = C ratios in CO2 (reported as 1 values) at AMY varied from-59.5 ‰ to 23.1 ‰, with a measurement uncertainty of ±1.8 ‰. The derived mean value Cff of (9.7±7.8) μmol mol-1 (1s) is greater than that found in earlier observations from Tae-Ahn Peninsula (TAP; 36.73° N, 126.13° E; 20 m a.s.l., 28 km away from AMY) of (4.4±5.7) μmol mol-1 from 2004 to 2010. The enhancement above background mole fractions of sulfur hexafluoride (1x.SF6/) and carbon monoxide (δx.CO/) correlate strongly with Cff (r > 0.7) and appear to be good proxies for fossil fuel CO2 at regional and continental scales. Samples originating from the Asian continent had greater δx.CO. Cff.RCO/values, (29±8) to (36±2) nmol μmol-1, than in Korean Peninsula local air ((8±2) nmol μmol-1). Air masses originating in China showed (1.6±0.4) to (2.0±0.1) times greater RCO than a bottom-up inventory, suggesting that China's CO emissions are underestimated in the inventory, while observed RSF6 values are 2-3 times greater than inventories for both China and South Korea. However, RCO values derived from both inventories and observations have decreased relative to previous studies, indicating that combustion efficiency is increasing in both China and South Korea. © 2020 Author(s).
语种	英语
scopus关键词	carbon dioxide; carbon emission; carbon isotope; carbon sink; emission inventory; fossil fuel; Anmyeon Island; South Chungcheong; 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/247455
作者单位	National Institute of Meteorological Sciences, Jeju, 63568, South Korea; Atmospheric Chemistry Laboratory, Hankuk University of Foreign Studies, Gyeonggi-do, 17035, South Korea; Noaa, Global Monitoring Laboratory, Boulder, CO 80305, United States; National Isotope Center, Gns Science, Lower Hutt, 5040, New Zealand; Cires, University of Colorado, Boulder, CO 80305, United States; Instaar, University of Colorado, Boulder, CO 80305, United States; Korea Research Institute of Standard and Science, Daejeon, 34113, South Korea; Department of Science of Measurement, University of Science and Technology, Daejeon, 34113, South Korea
推荐引用方式 GB/T 7714	Lee H.,Dlugokencky E.J.,Turnbull J.C.,et al. Observations of atmospheric 14CO2at Anmyeondo GAW station, South Korea: Implications for fossil fuel CO2and emission ratios[J],2020,20(20).
APA	Lee H..,Dlugokencky E.J..,Turnbull J.C..,Lee S..,Lehman S.J..,...&Park Y.-S..(2020).Observations of atmospheric 14CO2at Anmyeondo GAW station, South Korea: Implications for fossil fuel CO2and emission ratios.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(20).
MLA	Lee H.,et al."Observations of atmospheric 14CO2at Anmyeondo GAW station, South Korea: Implications for fossil fuel CO2and emission ratios".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.20(2020).