Articles | Volume 16, issue 7
https://doi.org/10.5194/acp-16-4569-2016
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, Michael C. Pitts, Lamont R. Poole, Ines Tritscher, Jens-Uwe Grooß, and Hideaki Nakajima

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Cited articles

Carslaw, K. S., Luo, B., and Peter, T.: An analytic expression for the composition of aqueous HNO3-H2SO4 stratospheric aerosols including gas phase removal of HNO3, Geophys. Res. Lett., 22, 1887–1880, 1995.
Carslaw, K. S., Wirth, M., Luo, B. P., Dörnbrack, A., Leutbecher, M., Volkert, H., nad J. T. Bacmeister, W. R., Reimer, E., and Peter, T.: Increased stratospheric ozone depletion due to mountain-induced atmospheric waves, Nature, 391, 675–678, https://doi.org/10.1038/35589, 1998.
Curtius, J., Weigel, R., Vössing, H.-J., Wernli, H., Werner, A., Volk, C.-M., Konopka, P., Krebsbach, M., Schiller, C., Roiger, A., Schlager, H., Dreiling, V., and Borrmann, S.: Observations of meteoric material and implications for aerosol nucleation in the winter Arctic lower stratosphere derived from in situ particle measurements, Atmos. Chem. Phys., 5, 3053–3069, https://doi.org/10.5194/acp-5-3053-2005, 2005.
Drdla, K. and Müller, R.: Temperature thresholds for chlorine activation and ozone loss in the polar stratosphere, Ann. Geophys., 30, 1055–1073, https://doi.org/10.5194/angeo-30-1055-2012, 2012.
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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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