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Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
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Volume 5, issue 4
Atmos. Chem. Phys., 5, 919–926, 2005
https://doi.org/10.5194/acp-5-919-2005
© Author(s) 2005. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.

Special issue: Probing the atmosphere in three dimensions for SCIAMACHY

Atmos. Chem. Phys., 5, 919–926, 2005
https://doi.org/10.5194/acp-5-919-2005
© Author(s) 2005. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.

  21 Mar 2005

21 Mar 2005

4-D comparison method to study the NOy partitioning in summer polar stratosphere – Influence of aerosol burden

G. Dufour1, S. Payan1, F. Lefèvre2, M. Eremenko1, A. Butz3, P. Jeseck1, Y. Té1, K. Pfeilsticker3, and C. Camy-Peyret1 G. Dufour et al.
  • 1Laboratoire de Physique Moléculaire et Applications, Université P. et M. Curie, Paris, France
  • 2Service d’Aéronomie, Institut Pierre-Simon Laplace, Paris, France
  • 3Institut für Umweltphysik, University of Heidelberg, Germany

Abstract. On 21–22 August 2001, NO, NO2 and HNO3 mixing ratio profiles were measured at high latitudes during sunset and sunrise using the Limb Profile Monitor of the Atmosphere (LPMA) and the DOAS experiments under stratospheric balloon. Photochemical simulations using the chemistry module of the Reprobus Chemistry Transport Model (CTM) that are constrained by ozone and total NOy balloon observations reproduce well the partitioning of NOx and NOy when model results are calculated at the exact time and location of the measurement for each tangent altitude. Taking the recently recommended reaction rate coefficients for the NOy partitioning (JPL-2003) and using realistic aerosol surface area in order to initialise the model leads to an agreement between calculations and measurements better than 10% all over the covered altitude range.

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