Articles | Volume 16, issue 18
https://doi.org/10.5194/acp-16-11937-2016
https://doi.org/10.5194/acp-16-11937-2016
Research article
 | 
23 Sep 2016
Research article |  | 23 Sep 2016

Heterogeneous kinetics of H2O, HNO3 and HCl on HNO3 hydrates (α-NAT, β-NAT, NAD) in the range 175–200 K

Riccardo Iannarelli and Michel J. Rossi

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Cited articles

Alcala-Jornod, A., van den Bergh, H., and Rossi, M. J.: Can soot particles emitted by airplane exhaust contribute to the formation of aviation contrails and cirrus clouds?, Geophys. Res. Lett., 29, 1820, https://doi.org/10.1029/2001GL014115, 2002.
Benson, S. W.: Thermochemical Kinetics, Methods for the Estimation of Thermochemical Data and Rate Parameters, 2nd Edn., John Wiley and Sons, 1976.
Biermann, U. M., Crowley, J. N., Huthwelker, T., Moortgat, G. K., Crutzen, P. J., and Peter, T.: FTIR studies on lifetime prolongation of stratospheric ice particles due to NAT coating, Geophys. Res. Lett., 25, 3939–3942, 1998.
Chaix, L., van den Bergh, H., and Rossi, M. J.: Real-Time kinetic measurements of the condensation and evaporation of D2O molecules on ice at 140 K  <  T  <  220 K, J. Phys. Chem. A, 102, 10300–10309, 1998.
Chiesa, S. and Rossi, M. J.: The metastable HCl  ⋅  6H2O phase – IR spectroscopy, phase transitions and kinetic/thermodynamic properties in the range 170–205 K, Atmos. Chem. Phys., 13, 11905–11923, https://doi.org/10.5194/acp-13-11905-2013, 2013.
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Short summary
Both adsorption and evaporation kinetics of water, nitric acid and hydrochloric acid on nitric acid hydrates were measured under upper tropospheric/lower stratospheric conditions. The evaporative lifetimes of "contaminated" ice clouds are important parameters for heterogeneous processing controlling polar ozone in the winter/spring season ("ozone hole"). We measured both the adsorption and evaporation kinetics, resulting in the corresponding vapor pressure as a validity check of the results.
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