Articles | Volume 16, issue 2
https://doi.org/10.5194/acp-16-1161-2016
https://doi.org/10.5194/acp-16-1161-2016
Research article
 | 
02 Feb 2016
Research article |  | 02 Feb 2016

Iodine's impact on tropospheric oxidants: a global model study in GEOS-Chem

T. Sherwen, M. J. Evans, L. J. Carpenter, S. J. Andrews, R. T. Lidster, B. Dix, T. K. Koenig, R. Sinreich, I. Ortega, R. Volkamer, A. Saiz-Lopez, C. Prados-Roman, A. S. Mahajan, and C. Ordóñez

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Cited articles

Ainsworth, E. A., Yendrek, C. R., Sitch, S., Collins, W. J., and Emberson, L. D.: The effects of tropospheric ozone on net primary productivity and implications for climate change, Annu. Rev. Plant Bio., 63, 637–661, https://doi.org/10.1146/annurev-arplant-042110-103829, 2012.
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Andrews, S. J., Jones, C. E., and Carpenter, L. J.: Aircraft measurements of very short-lived halocarbons over the tropical Atlantic Ocean, Geophys. Res. Lett., 40, 1005–1010, https://doi.org/10.1002/grl.50141, 2013.
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Short summary
Using a global chemical transport model (GEOS-Chem) with additional iodine emissions, chemistry, and deposition we show that iodine is responsible for ~ 9 % of global ozone loss but has negligible impacts on global OH. Uncertainties are large in the chemistry and emissions and future research is needed in both. Measurements of iodine species (especially HOI) would be useful. We believe iodine chemistry should be considered in future chemistry-climate and in air quality modelling.
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