High latitude thermospheric circulation during the Energy Budget Campaign

Details High latitude thermospheric circulation during the Energy Budget Campaign High latitude thermospheric circulation during the Energy Budget Campaign

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jatp...47..195r&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 47, Jan.-Mar. 1985, p. 195-232. Research supported by the

Physics

9

Atmospheric Circulation, Auroral Zones, Energy Budgets, Geomagnetism, Polar Meteorology, Thermosphere, Wind Measurement, Airglow, Diurnal Variations, Fabry-Perot Interferometers, Ionospheric Currents, Magnetic Disturbances, Nocturnal Variations, Oxygen Spectra, Wind Variations

Scientific paper

Presented is an analysis of the thermospheric wind data obtained using a Fabry-Perot interferometer during 16 nights of observation from Esrange as part of the Energy Budget Campaign. The OI 630 emission line observations in conjunction with a global theoretical dynamical model of the thermosphere indicate that the systematic behavior of thermospheric winds, as seen from Kiruna, northern Sweden, is that of a poleward daytime wind which evolves into a nearly ubiquitous equatorward wind between 1600 and 0300 UT. It is also noted that for the same ground-level magnetic disturbance at Kiruna, western (evening) winds exceed eastern (morning) winds by a factor of 2. Finally, it is reported that there were three occasions in the 16-night period on which the local input during a substorm was sufficient to halt or temporarily reverse a preexisting equatorward wind of 300 m/s.

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