GOMOS ozone measurements 2002-2007

GOMOS (Global Ozone Monitoring by Occultation of Stars) on board ENVISAT measures O3, NO2, NO3, neutral density, aerosols, H2O, and O2 in the stratosphere and mesosphere by detecting absorption of starlight. Global coverage, good vertical resolution and the self-calibrating measurement method make GOMOS observations a promising data set for building various climatologies. In this contribution we analyse nighttime ozone distributions measured by GOMOS in 2002-2007. We show monthly latitudinal distributions of the number density and mixing ratio vertical profiles. The longitudinal variation of profiles is also investigated. We determine the main morphological features of the profiles and their variation. We apply a straightforward time series analysis for the profiles and retrieve the main harmonic components.