气候变化领域集成服务门户(CCPortal): Emissions of Tetrafluoromethane (CF4) and Hexafluoroethane (C2F6) From East Asia: 2008 to 2019

CCPortal

DOI	10.1029/2021JD034888
	Emissions of Tetrafluoromethane (CF4) and Hexafluoroethane (C2F6) From East Asia: 2008 to 2019
	Kim J.; Thompson R.; Park H.; Bogle S.; Mühle J.; Park M.-K.; Kim Y.; Harth C.M.; Salameh P.K.; Schmidt R.; Ottinger D.; Park S.; Weiss R.F.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:16
英文摘要	The perfluorocarbons (PFCs), tetrafluoromethane (CF4) and hexafluoroethane (C2F6), are potent greenhouse gases with very long atmospheric lifetimes. They are emitted almost entirely from industrial sources, including the aluminum and rare earth metal smelting industries that emit them as by-products, and the semiconductor and flat panel display manufacturing industries that use them and vent unutilized amounts to the atmosphere. Despite extensive industrial efforts to quantify and curb these emissions, “top-down” PFC emission estimates derived from atmospheric measurements continue to rise and are significantly greater than reported process- and inventory-based “bottom-up” emissions. In this study, we estimate emissions of CF4 and C2F6 from East Asia, where PFC emitting industries are heavily concentrated, using a top-down approach (a Bayesian inversion) with high-frequency atmospheric measurements at Gosan (Jeju Island, South Korea) for 2008–2019. We also compile and analyze the available bottom-up CF4 and C2F6 emissions in East Asia from industrial and government reports. Our results suggest that the observed increases in global PFC emissions since 2015 are driven primarily by China's aluminum industry, with significant contributions from Japan's and Korea's semiconductor industry. Our analysis suggests that Chinese emissions occur predominantly from the aluminum industry, although their emissions per production ratio may be improving. Our results for Japan and Korea find significant discrepancies between top-down and bottom-up emissions estimates, suggesting that the effectiveness of emission reduction systems (abatement) used in their semiconductor industries may be overestimated. Overall, our top-down results for East Asia contribute significantly to reducing the gap in the global PFC emission budgets. © 2021. The Authors.
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/237064
作者单位	Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, United States; Norwegian Institute for Air Research (NILU), Kjeller, Norway; Department of Oceanography, Kyungpook National University, Daegu, South Korea; Climate Change Division, Office of Atmospheric Programs, Environmental Protection Agency, Washington, DC, United States; Kyungpook Institute of Oceanography, Kyungpook National University, Daegu, South Korea; School of Earth System Sciences, Kyungpook National University, Daegu, South Korea
推荐引用方式 GB/T 7714	Kim J.,Thompson R.,Park H.,et al. Emissions of Tetrafluoromethane (CF4) and Hexafluoroethane (C2F6) From East Asia: 2008 to 2019[J],2021,126(16).
APA	Kim J..,Thompson R..,Park H..,Bogle S..,Mühle J..,...&Weiss R.F..(2021).Emissions of Tetrafluoromethane (CF4) and Hexafluoroethane (C2F6) From East Asia: 2008 to 2019.Journal of Geophysical Research: Atmospheres,126(16).
MLA	Kim J.,et al."Emissions of Tetrafluoromethane (CF4) and Hexafluoroethane (C2F6) From East Asia: 2008 to 2019".Journal of Geophysical Research: Atmospheres 126.16(2021).