Home > Research > Publications & Outputs > On the regional and seasonal ozone depletion po...

Electronic data

  • Claxton_et_al-2019-Geophysical_Research_Letters

    Rights statement: An edited version of this paper was published by AGU. Copyright 2019 American Geophysical Union. Claxton, T., Hossaini, R., Wild, O., Chipperfield, M. P., & Wilson, C. ( 2019). On the regional and seasonal ozone depletion potential of chlorinated very short‐lived substances. Geophysical Research Letters, 46. https://doi.org/10.1029/2018GL081455 To view the published open abstract, go to http://dx.doi.org and enter the DOI.

    Accepted author manuscript, 985 KB, PDF document

    Available under license: CC BY-NC: Creative Commons Attribution-NonCommercial 4.0 International License

Links

Text available via DOI:

View graph of relations

On the regional and seasonal ozone depletion potential of chlorinated very short-lived substances

Research output: Contribution to journalJournal article

Published
<mark>Journal publication date</mark>28/05/2019
<mark>Journal</mark>Geophysical Research Letters
Issue number10
Volume46
Number of pages10
Pages (from-to)5489-5498
Publication statusPublished
Early online date29/04/19
Original languageEnglish

Abstract

Chloroform (CHCl3), dichloromethane (CH2Cl2), perchloroethylene (C2Cl4) and 1,2-dichloroethane (C2H4Cl2) are chlorinated Very Short-Lived Substances (Cl-VSLS) with a range of commercial/industrial applications. Recent studies highlight the increasing influence of Cl-VSLS on the stratospheric chlorine budget and therefore their possible role in ozone
depletion. Here, we evaluate the ozone depletion potential (ODP) of these Cl-VSLS using a three-dimensional chemical transport model and investigate sensitivity to emission location/season. The seasonal dependence of the ODPs is small but ODPs vary by a factor of 2-3 depending on the continent of emission: 0.0143-0.0264 (CHCl3), 0.0097-0.0208 (CH2Cl2), 0.0057-0.0198 (C2Cl4) and 0.0029-0.0119 (C2H4Cl2). Asian emissions produce the largest ODPs owing to proximity to the tropics and efficient troposphere-to-stratosphere transport of air originating from industrialised East Asia. The Cl-VSLS ODPs are generally small but the upper ends of the CHCl3 and CH2Cl2 ranges are comparable to the mean ODP of methyl chloride (0.02), a longer-lived ozone-depleting substance.

Bibliographic note

An edited version of this paper was published by AGU. Copyright 2019 American Geophysical Union. Claxton, T., Hossaini, R., Wild, O., Chipperfield, M. P., & Wilson, C. ( 2019). On the regional and seasonal ozone depletion potential of chlorinated very short‐lived substances. Geophysical Research Letters, 46. https://doi.org/10.1029/2018GL081455 To view the published open abstract, go to http://dx.doi.org and enter the DOI.