Articles | Volume 16, issue 15
Atmos. Chem. Phys., 16, 9579–9590, 2016
https://doi.org/10.5194/acp-16-9579-2016
Atmos. Chem. Phys., 16, 9579–9590, 2016
https://doi.org/10.5194/acp-16-9579-2016

Research article 02 Aug 2016

Research article | 02 Aug 2016

Hydroxyl radical in/on illuminated polar snow: formation rates, lifetimes, and steady-state concentrations

Zeyuan Chen et al.

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AR by Anna Wenzel on behalf of the Authors (27 Jun 2016)  Author's response    Manuscript
ED: Publish subject to technical corrections (05 Jul 2016) by Christopher Hoyle
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Short summary
We made the first measurements of the concentrations of hydroxyl radical (OH), a dominant environmental oxidant, in snow grains. Concentrations of OH in snow at Summit, Greenland, are comparable to values reported for midlatitude cloud and fog drops, even though impurity levels in the snow are much lower. At these concentrations, the lifetimes of organics and bromide in Summit snow are approximately 3 days and 7 h, respectively, suggesting that OH is a major oxidant for both species.
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