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Large Emissions of Perfluorocarbons in East Asia Deduced from Continuous Atmospheric Measurements

机译：通过连续大气测量得出东亚的全氟化碳排放量大

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摘要

The atmospheric mixing ratios of perfluorocarbons (PFCs), extremely potent greenhouse gases, have been continuously measured at two Japanese stations (Cape Ochiishi and Hateruma Island) since 2006, to infer their global and regional emissions. The baseline mixing ratios of the measured C_2-C_4 PFCs [PFC-116 (C_2F_6), PFC-218 (C_3F_8), and PFC-318 (c-C_4F_8)] showed slight annual increases of 1%-3%. Enhanced mixing ratios above baseline were occasionally observed at both sites in air masses that had passed over metropolitan regions in East Asia, suggesting high PFC emissions from those regions. We applied transport models to these pollution events and an inversion technique to estimate national emissions. The results suggest that, among the studied regions (China, Japan, North Korea, South Korea, and Taiwan), China was the largest PFC emitter, accounting for more than half of the regional emissions, followed by Japan. The estimated total emissions of each PFC from East Asia were 0.86 Gg yr~(-1) for PFC-116,031 Gg yr~(-1) for PFC-218, and 056 Gg yr~(-1) for PFC-318. They contributed greatly to global emissions as derived from the annual increases in the baseline mixing ratios, accounting for more than 75% of global PFC-218 and PFC-318 emissions and for approximately 40% of global PFC-116 emissions.
机译：自2006年以来，已经在两个日本站（大石岬角和Hateruma岛）连续测量了全氟化碳（PFCs）的大气混合比（极强的温室气体），以推断其全球和区域排放量。测得的C_2-C_4 PFC的基线混合比[PFC-116（C_2F_6），PFC-218（C_3F_8）和PFC-318（c-C_4F_8）]每年略有增加1％-3％。在穿越东亚大都市地区的空气质量的两个站点中，偶尔会观察到混合比率高于基线的情况，这表明这些地区的PFC排放量很高。我们将运输模型应用于这些污染事件，并运用反演技术来估算国家排放量。结果表明，在所研究的地区（中国，日本，朝鲜，韩国和台湾）中，中国是最大的PFC排放国，占区域排放的一半以上，其次是日本。东亚各PFC的估计总排放量，PFC-116为0.86 Gg yr〜（-1），PFC-218为031 Gg yr〜（-1），PFC-318为056 Gg yr〜（-1）。它们是由基准混合比的年度增加所导致的全球排放量的巨大贡献，占全球PFC-218和PFC-318排放量的75％以上，约占全球PFC-116排放量的40％。

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  • 来源
    《Environmental Science & Technology》 |2010年第11期|P.4089-4095|共7页
  • 作者

    TAKUYA SAITO; YOKO YOKOUCHI; ANDREAS STOHL; SHOICHI TAGUCHI; HITOSHI MUKAI;

  • 作者单位

    National Institute for Environmental Studies, Tsukuba, Japan;

    rnNational Institute for Environmental Studies, Tsukuba, Japan;

    Norwegian Institute for Air Research, Kjeller, Norway;

    National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan;

    rnNational Institute for Environmental Studies, Tsukuba, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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