Statistical analysis of water vapour and ozone in the UT/LS observed during SPURT and MOZAIC A. Kunz1,2, C. Schiller1, F. Rohrer2, H. G. J. Smit2, P. Nedelec3, and N. Spelten1 1Institut für Chemie und Dynamik der Geosphäre: Stratosphäre (ICG-1), Forschungszentrum Jülich, Jülich, Germany 2Institut für Chemie und Dynamik der Geosphäre: Troposphäre (ICG-2), Forschungszentrum Jülich, Jülich, Germany 3Laboratoire d'Aerologie, CNRS, Observatoire Midi-Pyrenees, Toulouse, France
Abstract. 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.
Citation: Kunz, A., Schiller, C., Rohrer, F., Smit, H. G. J., Nedelec, P., and Spelten, N.: Statistical analysis of water vapour and ozone in the UT/LS observed during SPURT and MOZAIC, Atmos. Chem. Phys., 8, 6603-6615, doi:10.5194/acp-8-6603-2008, 2008.