M. von Hobe, et al.
Reconciliation of essential process parameters for an enhanced predictability of Arctic stratospheric ozone loss and its climate interactions (RECONCILE): activities and results
Atmospheric Chemistry and Physics, 13(18), 9233-9268, 2013; doi: 10.5194/acp-13-9233-2013
O3 18OO2 O18OO O17OO


The international research project RECONCILE has addressed central questions regarding polar ozone depletion, with the objective to quantify some of the most relevant yet still uncertain physical and chemical processes and thereby improve prognostic modelling capabilities to realistically predict the response of the ozone layer to climate change. This overview paper outlines the scope and the general approach of RECONCILE, and it provides a summary of observations and modelling in 2010 and 2011 that have generated an in many respects unprecedented dataset to study processes in the Arctic winter stratosphere. Principally, it summarises important outcomes of RECONCILE including (i) better constraints and enhanced consistency on the set of parameters governing catalytic ozone destruction cycles, (ii) a better understanding of the role of cold binary aerosols in heterogeneous chlorine activation, (iii) an improved scheme of polar stratospheric cloud (PSC) processes that includes heterogeneous nucleation of nitric acid trihydrate (NAT) and ice on non-volatile background aerosol leading to better model parameterisations with respect to denitrification, and (iv) long transient simulations with a chemistry-climate model (CCM) updated based on the results of RECONCILE that better reproduce past ozone trends in Antarctica and are deemed to produce more reliable predictions of future ozone trends. The process studies and the global simulations conducted in RECONCILE show that in the Arctic, ozone depletion uncertainties in the chemical and microphysical processes are now clearly smaller than the sensitivity to dynamic variability.


  author = "M. von Hobe and S. Bekki and S. Borrmann and F. Cairo and F. D'Amato and G. D. Donfrancesco and A. Dörnbrack and A. Ebersoldt and M. Ebert and C. Emde and I. Engel and M. Ern and W. Frey and S. Genco and S. Griessbach and J.-U. Grooß and T. Gulde and G. Günther and E. Hösen and L. Hoffmann and V. Homonnai and C. R. Hoyle and I. S. A. Isaksen and D. R. Jackson and I. M. J\'anosi and R. L. Jones and K. Kandler and C. Kalicinsky and A. Keil and S. M. Khaykin and F. Khosrawi and R. Kivi and J. Kuttippurath and J. C. Laube and F. Lefèvre and R. Lehmann and S. Ludmann and B. P. Luo and M. Marchand and J. Meyer and V. Mitev and S. Molleker and R. Müller and H. Oelhaf and F. Olschewski and Y. Orsolini and T. Peter and K. Pfeilsticker and C. Piesch and M. C. Pitts and L. R. Poole and F. D. Pope and F. Ravegnani and M. Rex and M. Riese and T. Röckmann and B. Rognerud and A. Roiger and C. Rolf and M. L. Santee and M. Scheibe and C. Schiller and H. Schlager and M. S. de Cumis and N. Sitnikov and O. A. Søvde and R. Spang and N. Spelten and F. Stordal and O. Sumi\'nska-Ebersoldt and A. Ulanovski and J. Ungermann and S. Viciani and C. M. Volk and M. v. Scheidt and P. von der Gathen and K. Walker and T. Wegner and R. Weigel and S. Weinbruch and G. Wetzel and F. G. Wienhold and I. Wohltmann and W. Woiwode and I. A. K. Young and V. Yushkov and B. Zobrist and F. Stroh",
  title = "Reconciliation of essential process parameters for an enhanced predictability of Arctic stratospheric ozone loss and its climate interactions (RECONCILE): activities and results",
  year = 2013,
  journal = "Atmospheric Chemistry and Physics",
  volume = 13,
  number = 18,
  pages = "9233-9268",
  month = "Sep",
  keywords = "O3, 18OO2, O18OO, O17OO",
  doi = "10.5194/acp-13-9233-2013",
  url = ""
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