UARS MLS O3 SOUNDINGS COMPARED WITH LIDAR MEASUREMENTS USING THE CONSERVATIVE COORDINATES RECONSTRUCTION TECHNIQUE

A technique based on conservative properties of certain meteorological fields is used to compare ozone measurements from the Microwave Limb Sounder (MLS) on the Upper Atmosphere Research Satellite (UARS) with s oundings from a lidar system operated at midlatitudes by the Universit y of L'Aquila, Italy. A few typical cases are analyzed in connection w ith the position of the vortex relative to the observing station, and it is shown that in general lidar observations taken within the vortex compare well with the UARS data, regardless of whether they are coinc ident with a satellite overpass. It is shown that such analysis may be useful for comparing measurements of the same quantity taken at diffe rent sites using different measurement techniques.