Substantial contribution of iodine to Arctic ozone destruction

Unlike bromine, the effect of iodine chemistry on the Arctic surface ozone budget is poorly constrained. We present ship-based measurements of halogen oxides in the high Arctic boundary layer from the sunlit period of March to October 2020 and show that iodine enhances springtime tropospheric ozone...

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Bibliographic Details
Published in:Nature Geoscience
Main Authors: Benavent, Nuria, Mahajan, Anoop S., Li, Qinyi, Cuevas, Carlos A., Schmale, Julia, Angot, Helene, Jokinen, Tuija, Quelever, Lauriane L. J., Blechschmidt, Anne-Marlene, Zilker, Bianca, Richter, Andreas, Serna, Jesus A., Garcia-Nieto, David, Fernandez, Rafael P., Skov, Henrik, Dumitrascu, Adela, Pereira, Patric Simoes, Abrahamsson, Katarina, Bucci, Silvia, Duetsch, Marina, Stohl, Andreas, Beck, Ivo, Laurila, Tiia, Blomquist, Byron, Howard, Dean, Archer, Stephen D., Bariteau, Ludovic, Helmig, Detlev, Hueber, Jacques, Jacobi, Hans-Werner, Posman, Kevin, Dada, Lubna, Daellenbach, Kaspar R., Saiz-Lopez, Alfonso
Other Authors: Institute for Atmospheric and Earth System Research (INAR), Polar and arctic atmospheric research (PANDA), Air quality research group
Format: Article in Journal/Newspaper
Language:English
Published: Nature Publishing Group 2022
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Online Access:http://hdl.handle.net/10138/351274
Description
Summary:Unlike bromine, the effect of iodine chemistry on the Arctic surface ozone budget is poorly constrained. We present ship-based measurements of halogen oxides in the high Arctic boundary layer from the sunlit period of March to October 2020 and show that iodine enhances springtime tropospheric ozone depletion. We find that chemical reactions between iodine and ozone are the second highest contributor to ozone loss over the study period, after ozone photolysis-initiated loss and ahead of bromine.Iodine chemistry plays a more important role than bromine chemistry in tropospheric ozone losses in the Arctic, according to ship-based observations of halogen oxides from March to October 2020. Peer reviewed