Meteorology and Atmospheric Dynamics: Radiative processes; Atmospheric Composition and Structure: Airglow and aurora; Atmospheric Composition and Structure: Thermosphere-composition and chemistry; Atmospheric Composition and Structure: Pressure; density; and temperature
Abstract :
[en] The role of nonthermal oxygen atoms in the vertical distribution of the O I 989 Å EUV multiplet intensity is investigated using a thermospheric radiative transfer code. The superthermal oxygen concentration and temperatures are derived from the energy distribution functions of the O([SUP]3[/SUP]P) atoms calculated by a Monte Carlo stochastic model, and their effect on UV radiative transfer is compared to sounding rocket observations. The calculated intensity increase associated with the perturbation of the Doppler profile by the presence of hot O([SUP]3[/SUP]P) atoms is shown to be insufficient to account for the set of sounding rocket EUV intensity data.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Hubert, Benoît ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Gérard, Jean-Claude ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Cotton, D. M.
Bisikalo, D. V.
Shematovich, V. I.
Language :
English
Title :
Effect of hot oxygen on thermospheric O I UV airglow
Publication date :
01 August 1999
Journal title :
Journal of Geophysical Research
ISSN :
0148-0227
eISSN :
2156-2202
Publisher :
American Geophysical Union (AGU), Washington, United States - District of Columbia
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