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Tim Arnold

Tim Arnold

Associate Professor

Tim Arnold

Emissions of halogenated compounds in east asia determined from measurements at Jeju Island, Korea

Author

  • Shanlan Li
  • Jooil Kim
  • Kyung Ryul Kim
  • Jens Mühle
  • Seung Kyu Kim
  • Mi Kyung Park
  • Andreas Stohl
  • Dong Jin Kang
  • Tim Arnold
  • Christina M. Harth
  • Peter K. Salameh
  • Ray F. Weiss
Show all

Summary, in English

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.

Publishing year

2011-07-01

Language

English

Pages

5668-5675

Publication/Series

Environmental Science and Technology

Volume

45

Issue

13

Document type

Journal article

Publisher

The American Chemical Society (ACS)

Status

Published

ISBN/ISSN/Other

  • ISSN: 0013-936X