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Inverse modelling of CF4 and NF3 emissions in East Asia

Arnold, Tim LU orcid ; Manning, Alistair J. ; Kim, Jooil ; Li, Shanlan ; Webster, Helen ; Thomson, David ; Mühle, Jens ; Weiss, Ray F. ; Park, Sunyoung and O'Doherty, Simon (2018) In Atmospheric Chemistry and Physics 18(18). p.13305-13320
Abstract

Decadal trends in the atmospheric abundances of carbon tetrafluoride (CF4) and nitrogen trifluoride (NF3) have been well characterised and have provided a time series of global total emissions. Information on locations of emissions contributing to the global total, however, is currently poor. We use a unique set of measurements between 2008 and 2015 from the Gosan station, Jeju Island, South Korea (part of the Advanced Global Atmospheric Gases Experiment network), together with an atmospheric transport model, to make spatially disaggregated emission estimates of these gases in East Asia. Due to the poor availability of good prior information for this study, our emission estimates are largely influenced by the... (More)

Decadal trends in the atmospheric abundances of carbon tetrafluoride (CF4) and nitrogen trifluoride (NF3) have been well characterised and have provided a time series of global total emissions. Information on locations of emissions contributing to the global total, however, is currently poor. We use a unique set of measurements between 2008 and 2015 from the Gosan station, Jeju Island, South Korea (part of the Advanced Global Atmospheric Gases Experiment network), together with an atmospheric transport model, to make spatially disaggregated emission estimates of these gases in East Asia. Due to the poor availability of good prior information for this study, our emission estimates are largely influenced by the atmospheric measurements. Notably, we are able to highlight emission hotspots of NF3 and CF4 in South Korea due to the measurement location. We calculate emissions of CF4 to be quite constant between the years 2008 and 2015 for both China and South Korea, with 2015 emissions calculated at 4.3±2.7 and 0.36±0.11 Gg yr-1, respectively. Emission estimates of NF3 from South Korea could be made with relatively small uncertainty at 0.6±0.07 Gg yr-1 in 2015, which equates to ∼ 1.6 % of the country's CO2 emissions. We also apply our method to calculate emissions of CHF3 (HFC-23) between 2008 and 2012, for which our results find good agreement with other studies and which helps support our choice in methodology for CF4 and NF3..

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author
; ; ; ; ; ; ; ; and
publishing date
type
Contribution to journal
publication status
published
in
Atmospheric Chemistry and Physics
volume
18
issue
18
pages
16 pages
publisher
Copernicus GmbH
external identifiers
  • scopus:85053525716
ISSN
1680-7316
DOI
10.5194/acp-18-13305-2018
language
English
LU publication?
no
additional info
Publisher Copyright: © Author(s) 2018.
id
4b0d4042-9022-46a0-b471-07869be7c49c
date added to LUP
2024-10-24 18:25:46
date last changed
2025-04-11 15:38:43
@article{4b0d4042-9022-46a0-b471-07869be7c49c,
  abstract     = {{<p>Decadal trends in the atmospheric abundances of carbon tetrafluoride (CF<sub>4</sub>) and nitrogen trifluoride (NF<sub>3</sub>) have been well characterised and have provided a time series of global total emissions. Information on locations of emissions contributing to the global total, however, is currently poor. We use a unique set of measurements between 2008 and 2015 from the Gosan station, Jeju Island, South Korea (part of the Advanced Global Atmospheric Gases Experiment network), together with an atmospheric transport model, to make spatially disaggregated emission estimates of these gases in East Asia. Due to the poor availability of good prior information for this study, our emission estimates are largely influenced by the atmospheric measurements. Notably, we are able to highlight emission hotspots of NF<sub>3</sub> and CF<sub>4</sub> in South Korea due to the measurement location. We calculate emissions of CF<sub>4</sub> to be quite constant between the years 2008 and 2015 for both China and South Korea, with 2015 emissions calculated at 4.3±2.7 and 0.36±0.11 Gg yr<sup>-1</sup>, respectively. Emission estimates of NF<sub>3</sub> from South Korea could be made with relatively small uncertainty at 0.6±0.07 Gg yr<sup>-1</sup> in 2015, which equates to ∼ 1.6 % of the country's CO<sub>2</sub> emissions. We also apply our method to calculate emissions of CHF<sub>3</sub> (HFC-23) between 2008 and 2012, for which our results find good agreement with other studies and which helps support our choice in methodology for CF<sub>4</sub> and NF<sub>3</sub>..</p>}},
  author       = {{Arnold, Tim and Manning, Alistair J. and Kim, Jooil and Li, Shanlan and Webster, Helen and Thomson, David and Mühle, Jens and Weiss, Ray F. and Park, Sunyoung and O'Doherty, Simon}},
  issn         = {{1680-7316}},
  language     = {{eng}},
  month        = {{09}},
  number       = {{18}},
  pages        = {{13305--13320}},
  publisher    = {{Copernicus GmbH}},
  series       = {{Atmospheric Chemistry and Physics}},
  title        = {{Inverse modelling of CF<sub>4</sub> and NF<sub>3</sub> emissions in East Asia}},
  url          = {{http://dx.doi.org/10.5194/acp-18-13305-2018}},
  doi          = {{10.5194/acp-18-13305-2018}},
  volume       = {{18}},
  year         = {{2018}},
}