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Linkages between ozone-depleting substances, tropospheric oxidation and aerosols

Publication ,  Journal Article
Voulgarakis, A; Shindell, DT; Faluvegi, G
Published in: Atmospheric Chemistry and Physics
May 14, 2013

Coupling between the stratosphere and the troposphere allows changes in stratospheric ozone abundances to affect tropospheric chemistry. Large-scale effects from such changes on chemically produced tropospheric aerosols have not been systematically examined in past studies. We use a composition-climate model to investigate potential past and future impacts of changes in stratospheric ozone depleting substances (ODS) on tropospheric oxidants and sulfate aerosols. In most experiments, we find significant responses in tropospheric photolysis and oxidants, with small but significant effects on methane radiative forcing. The response of sulfate aerosols is sizeable when examining the effect of increasing future nitrous oxide (N2O) emissions. We also find that without the regulation of chlorofluorocar-bons (CFCs) through the Montreal Protocol, sulfate aerosols could have increased by 2050 by a comparable amount to the decreases predicted due to relatively stringent sulfur emissions controls. The individual historical radiative forcings of CFCs and N 2O through their indirect effects on methane (-22.6mWm-2 for CFCs and -6.7mWm-2 for N2O) and sulfate aerosols (-3.0 mWm-2 for CFCs and +6.5mWm-2 for N2O when considering the direct aerosol effect) discussed here are non-negligible when compared to known historical ODS forcing. Our results stress the importance of accounting for stratosphere-troposphere, gas-aerosol and composition-climate interactions when investigating the effects of changing emissions on atmospheric composition and climate. © Author(s) 2013.

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Published In

Atmospheric Chemistry and Physics

DOI

EISSN

1680-7324

ISSN

1680-7316

Publication Date

May 14, 2013

Volume

13

Issue

9

Start / End Page

4907 / 4916

Related Subject Headings

  • Meteorology & Atmospheric Sciences
  • 3702 Climate change science
  • 3701 Atmospheric sciences
  • 0401 Atmospheric Sciences
  • 0201 Astronomical and Space Sciences
 

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ICMJE
MLA
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Voulgarakis, A., Shindell, D. T., & Faluvegi, G. (2013). Linkages between ozone-depleting substances, tropospheric oxidation and aerosols. Atmospheric Chemistry and Physics, 13(9), 4907–4916. https://doi.org/10.5194/acp-13-4907-2013
Voulgarakis, A., D. T. Shindell, and G. Faluvegi. “Linkages between ozone-depleting substances, tropospheric oxidation and aerosols.” Atmospheric Chemistry and Physics 13, no. 9 (May 14, 2013): 4907–16. https://doi.org/10.5194/acp-13-4907-2013.
Voulgarakis A, Shindell DT, Faluvegi G. Linkages between ozone-depleting substances, tropospheric oxidation and aerosols. Atmospheric Chemistry and Physics. 2013 May 14;13(9):4907–16.
Voulgarakis, A., et al. “Linkages between ozone-depleting substances, tropospheric oxidation and aerosols.” Atmospheric Chemistry and Physics, vol. 13, no. 9, May 2013, pp. 4907–16. Scopus, doi:10.5194/acp-13-4907-2013.
Voulgarakis A, Shindell DT, Faluvegi G. Linkages between ozone-depleting substances, tropospheric oxidation and aerosols. Atmospheric Chemistry and Physics. 2013 May 14;13(9):4907–4916.

Published In

Atmospheric Chemistry and Physics

DOI

EISSN

1680-7324

ISSN

1680-7316

Publication Date

May 14, 2013

Volume

13

Issue

9

Start / End Page

4907 / 4916

Related Subject Headings

  • Meteorology & Atmospheric Sciences
  • 3702 Climate change science
  • 3701 Atmospheric sciences
  • 0401 Atmospheric Sciences
  • 0201 Astronomical and Space Sciences