ACP Atmospheric Chemistry and Physics ACP 1680-7324 Copernicus GmbH Göttingen, Germany 10.5194/acp-8-6603-2008 Statistical analysis of water vapour and ozone in the UT/LS observed during SPURT and MOZAIC Kunz A. 1 2 Schiller C. 1 Rohrer F. 2 Smit H. G. J. 2 Nedelec P. 3 Spelten N. 1 Institut für Chemie und Dynamik der Geosphäre: Stratosphäre (ICG-1), Forschungszentrum Jülich, Jülich, Germany Institut für Chemie und Dynamik der Geosphäre: Troposphäre (ICG-2), Forschungszentrum Jülich, Jülich, Germany Laboratoire d'Aerologie, CNRS, Observatoire Midi-Pyrenees, Toulouse, France 17 11 2008 8 22 6603 6615 This is an open-access article ditributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. This article is available from http://www.atmos-chem-phys.net/8/6603/2008/acp-8-6603-2008.html The full text article is available as a PDF file from http://www.atmos-chem-phys.net/8/6603/2008/acp-8-6603-2008.pdf

A statistical analysis for the comparability of water (H<sub>2</sub>O) and ozone (O<sub>3</sub>) data sets sampled during the SPURT aircraft campaigns and the MOZAIC passenger aircraft flights is presented. The Kolmogoroff-Smirnoff test reveals that the distribution functions from SPURT and MOZAIC trace gases differ from each other with a confidence of 95%. A variance analysis shows a different variability character in both trace gas data sets. While the SPURT H<sub>2</sub>O data only contain atmospheric processes variable on a diurnal or synoptical timescale, MOZAIC H<sub>2</sub>O data also reveal processes, which vary on inter-seasonal and seasonal timescales. The SPURT H<sub>2</sub>O data set does not represent the full MOZAIC H<sub>2</sub>O variance in the UT/LS for climatological investigations, whereas the variance of O<sub>3</sub> is much better represented. SPURT H<sub>2</sub>O data are better suited in the stratosphere, where the MOZAIC RH sensor looses its sensitivity.

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