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Abstract
The sub-millimetre radiometer (SMR) instrument aboard the Odin satellite launched in February 2001 is dedicated to the observation of trace gas profiles in the stratosphere and in the mesosphere, in particular water vapour and its isotopic species HDO, H2 17O and H2 18O. By averaging more than 400 000 Odin/SMR spectra over the period from November 2002 to March 2003, weak lines have been detected in the atmosphere. These weak lines have been attributed to water isotopic species HD18O, to a vibrationally-excited N2O, and to CH3OH.
Acknowledgements
This work was supported by the Ministry of Education, Youth and Sports of the Czech Republic: Project No. OC723.001 (in the frame of COST723 action), project No. 1P05ME766 and by the project 1ET400400410 (National Research program TP2 of the Czech Republic). Odin is a Swedish-led satellite project funded jointly by the Swedish National Space Board (SNSB), the Canadian Space Agency (CSA), the National Technology Agency of Finland (Tekes), and the Centre National d'Etudes Spatiales (CNES).