Skip to content
Journal article

Uncertainties in modelling heterogeneous chemistry and Arctic ozone depletion in the winter 2009/2010

Wohltmann I, Wegner T, Müller R, Lehmann R, Rex M, Manney G, Santee M, Bernath P, Suminska-Ebersoldt O, Stroh F, Von Hobe M, Volk C, Hösen E, Ravegnani F, Ulanovsky A, Yushkov V ...see all

Atmospheric Chemistry and Physics, vol. 13, issue 8 (2013) pp. 3909-3929

  • 11

    Readers

    Mendeley users who have this article in their library.
  • 20

    Citations

    Citations of this article.
  • N/A

    Views

    ScienceDirect users who have downloaded this article.
Sign in to save reference

Abstract

Stratospheric chemistry and denitrification are simulated for the Arctic winter 2009/2010 with the Lagrangian Chemistry and Transport Model ATLAS. A number of sensitivity runs is used to explore the impact of uncertainties in chlorine activation and denitrification on the model results. In particular, the efficiency of chlorine activation on 5 different types of liquid aerosol versus activation on nitric acid trihydrate clouds is ex-amined. Additionally, the impact of changes in reaction rate coefficients, in the particle number density of polar stratospheric clouds, in supersaturation, temperature or the ex-tent of denitrification is investigated. Results are compared to satellite measurements of MLS and ACE-FTS and to in-situ measurements onboard the Geophysica aircraft 10 during the RECONCILE measurement campaign. It is shown that even large changes in the underlying assumptions have only a small impact on the modeled ozone loss, even though they can cause considerable differences in chemical evolution and den-itrification. In addition, it is shown that chlorine activation on liquid aerosols alone is able to explain the observed magnitude and morphology of the mixing ratios of active 15 chlorine, reservoir gases and ozone.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Get full text

Authors

Cite this document

Choose a citation style from the tabs below