During its three first years in orbit, the Odin satellite has performed regular studies on mesospheric composition. Three dedicated campaign periods, two in the northern and one in the southern hemisphere, have provided comprehensive data sets during polar summer mesosphere conditions. In this presentation, we focus on the detection and spectral analysis of noctilucent clouds (NLC) by Odin's optical spectrograph and infrared imaging system (OSIRIS). Limb spectra of scattered sunlight are analysed in the spectral range 275-810 nm. Daily global maps of NLC show significant planetary-scale patterns. Based on Mie simulations, particle sizes are investigated as a function of season and latitude. Utilising the sensitive mesospheric capabilities of Odin's sub-millimetre receiver (SMR), profiles of water vapour have been retrieved at 557 GHz. We present first comparisons of Odin's NLC and water vapour measurements.
35th COSPAR Scientific Assembly
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