Wind structure and variability in the middle atmosphere during the November 1980 energy budget campaign

Details Wind structure and variability in the middle atmosphere during the November 1980 energy budget campaign Wind structure and variability in the middle atmosphere during the November 1980 energy budget campaign

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jatp...47..183s&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 47, Jan.-Mar. 1985, p. 183-193. Research supported by the

Computer Science

Sound

18

Geomagnetism, Middle Atmosphere, Polar Meteorology, Rocket Sounding, Wind Measurement, Wind Variations, Energy Budgets, Gravity Waves, Meridional Flow, Meteorological Instruments, Scandinavia, Wind Profiles

Scientific paper

Between November 6 and December 1, 1980 series of rocket observations were obtained from two sites in northern Scandinavia (68 deg N) as part of the Energy Budget Campaign, revealing the presence of significant vertical and temporal changes in the wind structure. These changes coincided with different geomagnetic conditions, i.e. quiet and enhanced. Large amounts of rocket data were gathered from high latitudes over such a short interval of time. Prior to November 16 the meridional wind component above 60 km was found to be positive (southerly), while the magnitude of the zonal wind component incresed with altitude. After November 16 the meridional component became negative (northerly) and the magnitude of the zonal wind component was noted to decrease with altitude. Time-sections of the perturbations of the zonal wind show the presence of vertically propagating waves, which suggest gravity wave activity. These waves increase in length from 1 km near 30 km to over 12 km near 80 km. The observational techniques employed Andoya (69 deg N), Norway, and Esrange (67.9 deg N), Sweden, consisted of chaff foil, instrumented rigid spheres, chemical trails, inflatable spheres and parachutes.

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