Articles | Volume 22, issue 6
Atmos. Chem. Phys., 22, 4005–4018, 2022
https://doi.org/10.5194/acp-22-4005-2022
Atmos. Chem. Phys., 22, 4005–4018, 2022
https://doi.org/10.5194/acp-22-4005-2022
Research article
 | Highlight paper
31 Mar 2022
Research article  | Highlight paper | 31 Mar 2022

Full latitudinal marine atmospheric measurements of iodine monoxide

Hisahiro Takashima et al.

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Cited articles

Alicke, B., Hebestreit, K., Stutz, J., and Platt, U.: Iodine oxide in the marine boundary layer, Nature, 397, 572–573, https://doi.org/10.1038/17508, 1999. 
Atkinson, R., Baulch, D. L., Cox, R. A., Crowley, J. N., Hampson, R. F., Hynes, R. G., Jenkin, M. E., Rossi, M. J., and Troe, J.: Evaluated kinetic and photochemical data for atmospheric chemistry: Volume III – gas phase reactions of inorganic halogens, Atmos. Chem. Phys., 7, 981–1191, https://doi.org/10.5194/acp-7-981-2007, 2007. 
Baccarini, A., Karlsson, L., Dommen, J., Duplessis, P., Vullers, J., Brooks, I. M., Saiz-Lopez, A., Salter, M., Tjernstrom, M., Baltensperger, U., Zieger, P., and Schmale, J.: Frequent new particle formation over the high Arctic pack ice by enhanced iodine emissions, Nat. Commun., 11, 4924, https://doi.org/10.1038/s41467-020-18551-0, 2020. 
Bogumil, K., Orphal, J., and Burrows, J. P.: Temperature-dependent absorption cross-sections of O3, NO2, and other atmospheric trace gases measured using the SCIAMACHY spectrometer, Proceedings of the ERS-Envisat Symposium, October 2000, Goteborg, Sweden, 2000. 
Carpenter, L. J., Archer, S. D., and Beale, R.: Ocean-atmosphere trace gas exchange, Chem. Soc. Rev., 41, 6473–6506, https://doi.org/10.1039/c2cs35121h, 2012. 
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We have undertaken atmospheric iodine monoxide (IO) observations in the global marine boundary layer with a wide latitudinal coverage and sea surface temperature (SST) range. We conclude that atmospheric iodine is abundant over the Western Pacific warm pool, appearing as an iodine fountain, where ozone (O3) minima occur. Our study also found negative correlations between IO and O3 concentrations over IO maxima, which requires reconsideration of the initiation process of halogen activation.
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