Observations of iodine monoxide over three summers  at the Indian Antarctic bases of Bharati and Maitri

Mahajan, Anoop S.; Biswas, Mriganka S.; Beirle, Steffen; Wagner, Thomas; Schönhardt, Anja; Benavent, Nuria; Saiz-Lopez, Alfonso

doi:https://doi.org/10.5194/acp-21-11829-2021

Articles | Volume 21, issue 15

https://doi.org/10.5194/acp-21-11829-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-21-11829-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 15

Research article

|

09 Aug 2021

Research article |

| 09 Aug 2021

Observations of iodine monoxide over three summers at the Indian Antarctic bases of Bharati and Maitri

Anoop S. Mahajan, Mriganka S. Biswas, Steffen Beirle, Thomas Wagner, Anja Schönhardt, Nuria Benavent, and Alfonso Saiz-Lopez

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https://doi.org/10.5194/acp-21-11829-2021-supplement

Data sets

Data as a part of Observations of iodine monoxide over three summers at the Indian Antarctic bases, Bharati and Maitri” A. Mahajan https://doi.org/10.17632/wvh25bxzpb.2

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Short summary

Iodine plays a vital role in oxidation chemistry over Antarctica, with past observations showing highly elevated levels of iodine oxide (IO) leading to severe depletion of boundary layer ozone. We present IO observations over three summers (2015–2017) at the Indian Antarctic bases of Bharati and Maitri. IO was observed during all campaigns with mixing ratios below 2 pptv, which is lower than the peak levels observed in West Antarctica, showing the differences in regional chemistry and emissions.