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.
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - On the regional and seasonal ozone depletion potential of chlorinated very short-lived substances
AU - Claxton, Tom
AU - Hossaini, Ryan
AU - Wild, Oliver
AU - Chipperfield, Martyn
AU - Wilson, Chris
N1 - 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.
PY - 2019/5/28
Y1 - 2019/5/28
N2 - 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.
AB - 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.
U2 - 10.1029/2018GL081455
DO - 10.1029/2018GL081455
M3 - Journal article
VL - 46
SP - 5489
EP - 5498
JO - Geophysical Research Letters
JF - Geophysical Research Letters
SN - 0094-8276
IS - 10
ER -