Articles | Volume 16, issue 7
Atmos. Chem. Phys., 16, 4569–4577, 2016
https://doi.org/10.5194/acp-16-4569-2016
Atmos. Chem. Phys., 16, 4569–4577, 2016
https://doi.org/10.5194/acp-16-4569-2016

Research article 13 Apr 2016

Research article | 13 Apr 2016

Vortex-wide chlorine activation by a mesoscale PSC event in the Arctic winter of 2009/10

Tobias Wegner et al.

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Short summary
Satellite observations are used to constrain areas with large backscatter values areas inside the polar vortex. Surface area is derived from these observations and used in heterogeneous modeling. Satellite gas species observations show a decrease in HCl downwind of areas with large surface area density indicating heterogeneous processing inside these areas. This decrease can only be simulated if a realistic surface area is assumed demonstrating the importance of polar stratospheric cloud.
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