Articles | Volume 17, issue 5
Atmos. Chem. Phys., 17, 3401–3421, 2017
https://doi.org/10.5194/acp-17-3401-2017
Atmos. Chem. Phys., 17, 3401–3421, 2017
https://doi.org/10.5194/acp-17-3401-2017
Research article
09 Mar 2017
Research article | 09 Mar 2017

Bromine atom production and chain propagation during springtime Arctic ozone depletion events in Barrow, Alaska

Chelsea R. Thompson et al.

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Short summary
The generally accepted mechanism leading to ozone depletion events in the Arctic assumes efficient gas-phase recycling of bromine atoms, such that the rate of ozone depletion has often been estimated as the rate that Br atoms regenerate through gas-phase BrO + BrO and BrO + ClO reactions. Using a large suite of data from the OASIS2009 campaign, our modeling results show that the gas-phase regeneration of Br is less efficient than expected and that heterogeneous recycling on surfaces is critical.
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