The use of mass spectrometer measurements to derive thermospheric temperature and density

Details The use of mass spectrometer measurements to derive thermospheric temperature and density The use of mass spectrometer measurements to derive thermospheric temperature and density

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988p%26ss...36..281r&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 36, March 1988, p. 281-290. SERC-supported research.

Computer Science

Sound

7

Atmospheric Density, Atmospheric Temperature, Mass Spectroscopy, Thermosphere, Atmospheric Chemistry, Atmospheric Models, Satellite Sounding, Temperature Distribution

Scientific paper

Thermospheric temperature is often derived from measurements of gas concentration, with the aid of empirical models that assume the individual gases (in particular N2) to be in 'diffusive equilibrium'. This paper uses the University College London computational model, in conjunction with CIRA 1972, to show that the 'derived temperatures' may be in error by a few hundred degrees if there are significant departures from diffusive equilibrium, such as exist in regions of strong heating and upwelling. Such 'derived temperatures', and also temperatures deduced from scale heights, may not be reliable unless all major gases are taken into account.

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