Articles | Volume 18, issue 3
https://doi.org/10.5194/acp-18-1507-2018
https://doi.org/10.5194/acp-18-1507-2018
Research article
 | 
02 Feb 2018
Research article |  | 02 Feb 2018

Modelling the physical multiphase interactions of HNO3 between snow and air on the Antarctic Plateau (Dome C) and coast (Halley)

Hoi Ga Chan, Markus M. Frey, and Martin D. King

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Cited articles

Abbatt, J. P. D.: Interaction of HNO3 with water-ice surfaces at temperatures of the free troposphere, Geophys. Res. Lett., 24, 1479–1482, https://doi.org/10.1029/97GL01403, 1997.
Akinfiev, N. N., Mironenko, M. V., and Grant, S. A.: Thermodynamic Properties of NaCl Solutions at Subzero Temperatures, J. Solut. Chem., 30, 1065–1080, https://doi.org/10.1023/A:1014445917207, 2001.
Ammann, M., Cox, R. A., Crowley, J. N., Jenkin, M. E., Mellouki, A., Rossi, M. J., Troe, J., and Wallington, T. J.: Evaluated kinetic and photochemical data for atmospheric chemistry: Volume VI – heterogeneous reactions with liquid substrates, Atmos. Chem. Phys., 13, 8045–8228, https://doi.org/10.5194/acp-13-8045-2013, 2013.
Beine, H. J., Honrath, R. E., Dominè, F., Simpson, W. R., and Fuentes, J. D.: NOx during background and ozone depletion periods at Alert: Fluxes above the snow surface, J. Geophys. Res.-Atmos., 107, 4584, https://doi.org/10.1029/2002JD002082, 2002.
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Short summary
Emissions of reactive nitrogen from snowpacks influence remote air quality. Two physical air–snow models for nitrate were developed. One assumes that below a threshold temperature the air–snow grain interface is pure ice and above it a disordered interface emerges. The other assumes an air–ice interface below melting and that any liquid present is concentrated in micropockets. Only the latter matches observations at two Antarctic lcoations covering a wide range of environmental conditions.
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