Articles | Volume 14, issue 21
https://doi.org/10.5194/acp-14-11843-2014
https://doi.org/10.5194/acp-14-11843-2014
Research article
 | 
12 Nov 2014
Research article |  | 12 Nov 2014

HO2NO2 and HNO3 in the coastal Antarctic winter night: a "lab-in-the-field" experiment

A. E. Jones, N. Brough, P. S. Anderson, and E. W. Wolff

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Cited articles

Bartels-Rausch, T., Eichler, B., Zimmermann, P., Gäggeler, H. W., and Ammann, M.: The adsorption of nitrogen oxides on crystalline ice, Atmos. Chem. Phys., 2, 235–247, https://doi.org/10.5194/acp-2-235-2002, 2002.
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Buys, Z., Brough, N., Huey, L. G., Tanner, D. J., von Glasow, R., and Jones, A. E.: High temporal resolution Br2, BrCl and BrO observations in coastal Antarctica, Atmos. Chem. Phys., 13, 1329–1343, https://doi.org/10.5194/acp-13-1329-2013, 2013.
Chen, G., Davis, D., Crawford, J., Nowak, J. B., Eisele, F., Mauldin, R. L., Tanner, D., Buhr, M., Shetter, R., Lefer, B., Arimoto, R., Hogan, A., and Blake, D.: An investigation of South Pole HOx chemistry: Comparison of model results with ISCAT observations, Geophys. Res. Lett., 28, 3633–3636, 2001.
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We report observations of nitric acid and peroxynitric acid, in coastal Antarctica during winter. During winter, it is dark 24h per day, so there is no influence of sunlight on atmospheric composition. We show that observed variability in concentrations is highly correlated with changes in temperature. We derive enthalpies of adsorption and show they are consistent with those derived in laboratory studies. The Antarctic, during winter, is an ideal natural laboratory to study air-snow exchange.
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