A comparison between vertical winds and divergence in the high-latitude thermosphere

Details A comparison between vertical winds and divergence in the high-latitude thermosphere A comparison between vertical winds and divergence in the high-latitude thermosphere

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993angeo..11..728c&link_type=abstract

Annales Geophysicae (ISSN 0992-7689), vol. 11, no. 8, p. 728-733.

Physics

13

Thermosphere, Vertical Distribution, Wind Direction, Wind Velocity Measurement, Fabry-Perot Interferometers, Horizontal Orientation, Winds Aloft

Scientific paper

Measurements of thermospheric wind velocities obtained from a Fabry-Perot interferometer situated at Halley (Antarctica) are used to compare the vertical wind with the divergence of the horizontal flow at an altitude of about 240 km. It is found that the ratio between vertical wind and divergence is of the order of five times that predicted by a theoretical model. The likely causes of this discrepancy are discussed. A scale size of approximately 360 km for the vertical wind at this high latitude site is suggested by the results.

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