Upper stratospheric temperature profiles obtained by lidar at Syowa Station, Antarctica

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The upper stratospheric temperature profiles in the height range of 20 to 50 km were measured by use of Rayleigh scattering signals obtained at lidar measurements of the sodium layer during the period from March to October, 1985, at Syowa Station (69°00'S, 39°35'E), Antarctica. At first, in order to test the ability of temperature measurement by lidar, the simultaneous co-operative measurements were carried out by lidar, meteorological rocket (MT-135JA), and sonde soundings. The comparison among those results indicated that the temperature profiles obtained by lidar almost agreed with that by rocket sounding in the height range of 20 to 40 km and matched well with that below the height of 20 km by sonde sounding. From the date of 18 nights, it was found that the measured temperature profiles in winter were available because of no disturbance by the aerosol layer which had moved downwards below 25 km as polar stratospheric cloud (PSC). On the other hand, it was found that the profiles in autumn abd spring were partly disturbed by the aerosol layer.
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