VHF radar observations in the stratosphere and mesosphere during a stratospheric warming

Computer Science – Sound

Scientific paper

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Atmospheric Sounding, Mesosphere, Radar Measurement, Stratosphere, Stratospheric Warming, Atmospheric Circulation, Radar Echoes, Very High Frequencies, Wind Direction, Wind Velocity

Scientific paper

For the first time the SOUSY-VHF-Radar (52 deg N, 10 deg E, Germany) was used to carry out measurements during a minor and major stratospheric warming in February and March 1980, respectively. Echoes have been received from the stratosphere up to an altitude of about 30 km continuously during day and night, whereas echoes from the mesosphere were restricted to the daytime and occurred sporadically at different heights within the altitude range from 60 to 90 km. The three-dimensional velocity vector has been derived from Doppler measurements made in three different antenna beam directions with a height resolution of 1.5 km. The resulting variation in height and time of the observed stratospheric and mesospheric wind speed and direction is discussed with respect to the stratospheric warming and compared to results obtained during undisturbed conditions.

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