Atmospheric Chemistry and Physics www.atmos-chem-phys.net 1680-7316 1680-7324 8 22 2008 10.5194/acp-8-6603-2008 http://www.atmos-chem-phys.net/8/6603/2008/ http://www.atmos-chem-phys.net/8/6603/2008/acp-8-6603-2008.html http://www.atmos-chem-phys.net/8/6603/2008/acp-8-6603-2008.pdf 6603 6615 2008-11-17 Statistical analysis of water vapour and ozone in the UT/LS observed during SPURT and MOZAIC A. Kunz a.kunz@fz-juelich.de C. Schiller F. Rohrer H. G. J. Smit P. Nedelec N. Spelten 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 A statistical analysis for the comparability of water (H₂O) and ozone (O₃) 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 H₂O data only contain atmospheric processes variable on a diurnal or synoptical timescale, MOZAIC H₂O data also reveal processes, which vary on inter-seasonal and seasonal timescales. The SPURT H₂O data set does not represent the full MOZAIC H₂O variance in the UT/LS for climatological investigations, whereas the variance of O₃ is much better represented. SPURT H₂O data are better suited in the stratosphere, where the MOZAIC RH sensor looses its sensitivity. Brandt, S.: Data Analysis – Statistical and Computational Methods for Scientests and Engineers, Springer Berlin, 686 pp,. 1999. 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