Emissions of Halogenated Compounds in East Asia Determined from Measurements at Jeju Island, Korea

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• 作者：Shanlan Li ; Jooil Kim ; Kyung-Ryul Kim ; Jens M眉hle ; Seung-Kyu Kim ; Mi-Kyung Park ; Andreas Stohl ; Dong-Jin Kang ; Tim Arnold ; Christina M. Harth ; Peter K. Salameh ; Ray F. Weiss
• 刊名：Environmental Science & Technology
• 出版年：2011
• 出版时间：July 1, 2011
• 年：2011
• 卷：45
• 期：13
• 页码：5668-5675
• 全文大小：1066K
• 年卷期：v.45,no.13(July 1, 2011)
• ISSN：1520-5851

文摘

High-frequency in situ measurements at Gosan (Jeju Island, Korea) during November 2007 to December 2008 have been combined with interspecies correlation analysis to estimate national emissions of halogenated compounds (HCs) in East Asia, including the chlorofluorocarbons (CFCs), halons, hydrochlorofluorocarbons (HCFCs), hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), sulfur hexafluoride (SF₆), and other chlorinated and brominated compounds. Our results suggest that overall China is the dominant emitter of HCs in East Asia, however significant emissions are also found in South Korea, Japan and Taiwan for HFC-134a, HFC-143a, C₂F₆, SF₆, CH₃CCl₃, and HFC-365mfc. The combined emissions of CFCs, halon-1211, HCFCs, HFCs, PFCs, and SF₆ from all four countries in 2008 are 25.3, 1.6, 135, 42.6, 3.6, and 2.0 kt/a, respectively. They account for approximately 15%, 26%, 29%, 16%, 32%, and 26.5% of global emissions, respectively. Our results show signs that Japan has successfully phased out CFCs and HCFCs in compliance with the Montreal Protocol (MP), Korea has started transitioning from HCFCs to HFCs, while China still significantly consumes HCFCs. Taiwan, while not directly regulated under the MP, is shown to have adapted the use of HFCs. Combined analysis of emission rates and the interspecies correlation matrix presented in this study proves to be a powerful tool for monitoring and diagnosing changes in consumption of HCs in East Asia.