Seasonal and solar cycle variations in high-latitude thermospheric winds.
Geophysical Research Letters
1983 - 1986.
Available under License : See the attached licence file.
Thermospheric wind measurements have been collected systematically every winter for over nine years from a high-latitude site at Kiruna, Sweden (67.8-degrees-N, 20.4-degrees-E). The database contains 1242 nights of data collected with a Fabry-Perot Interferometer (FPI), perhaps the largest single- site database of thermospheric winds. This analysis shows a marked seasonal and solar cycle variation. Particularly at high solar activity, sunward winds of the evening period (16 - 20 UT) are more than 50% stronger at Spring than at Autumn equinox. This large asymmetry in the behaviour of high-latitude thermospheric winds at spring and autumn equinox has not yet been predicted by model simulations.
|Title:||Seasonal and solar cycle variations in high-latitude thermospheric winds|
|Open access status:||An open access version is available from UCL Discovery|
|Additional information:||Copyright 1991 by the American Geophysical Union|
|UCL classification:||UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Physics and Astronomy|
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