An incoherent scatter study of short- and long-term temperature and atomic oxygen variations in the thermosphere

Details An incoherent scatter study of short- and long-term temperature and atomic oxygen variations in the thermosphere An incoherent scatter study of short- and long-term temperature and atomic oxygen variations in the thermosphere

Feb 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983angeo...1...81f&link_type=abstract

Annales Geophysicae (ISSN 0755-0685), vol. 1, Jan.-Feb. 1983, p. 81-89.

Physics

Atmospheric Composition, Atmospheric Temperature, Incoherent Scatter Radar, Midlatitude Atmosphere, Oxygen Atoms, Thermosphere, Annual Variations, Diurnal Variations, Exosphere, Temperature Profiles

Scientific paper

Diurnal distributions of exospheric temperature and atomic oxygen concentration at 200 km, deduced from incoherent scatter observations during the period 1974-1977, are fitted by a function including a mean value and diurnal and semi-diurnal oscillations. The characteristics of each component are combined with similar values obtained in the same way during high solar activity (1969-1972). All the data are then analyzed in order to evidence long-term variations (seasonal, annual, and as a function of geomagnetic activity indices), over a large range of solar activity (70 to 170 x 10 to the 4th Jansky). The results of the analysis of the diurnal temperature profiles from 120 to 200 km are compared to those obtained from independent data gathered in the upper thermosphere. The entire data set for low solar activity were provided by the three receiving stations of the French quadristatic Thomson radar.

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