Article (Scientific journals)
The thermospheric heating efficiency under electron precipitation conditions
Singh, V.; Gérard, Jean-Claude
1982In Planetary and Space Science, 30, p. 1083-1089
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Keywords :
ATMOSPHERIC CHEMISTRY; ATMOSPHERIC HEATING; ELECTRON PRECIPITATION; THERMOSPHERE; ALTITUDE; AURORAS; EXOTHERMIC REACTIONS; GAS DISSOCIATION; KINETIC HEATING; NITROGEN; OXYGEN; TIME DEPENDENCE
Abstract :
[en] The results of a study of the altitude distribution of particle heating due to magnetospheric electron penetration into the atmosphere are presented. Updated chemical species data were used in the study, and attention was given to day- and night-side precipitation energy fluxes. The data base on chemical species was obtained from the Atmosphere Explorer C spacecraft and lower altitude observations. A system of 16 continuity equations was employed to formulate a time-dependent auroral model covering reactions and rate coefficients of electrons and O, O2, N2, NNO, and N ions. The heating efficiency of direct dissociation of atmospheric molecules, exothermic chemical reactions involving ions, ground state and metastable neutral species, and cooling of the thermal electrons was calculated. The calculations indicate that over 60 percent of the energy input is transferred to the neutral gas. Particle heating can exceed 1 erg/sq cm per sec.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Singh, V.;  Liege, Universite, Liege, Belgium
Gérard, Jean-Claude  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Language :
English
Title :
The thermospheric heating efficiency under electron precipitation conditions
Publication date :
01 November 1982
Journal title :
Planetary and Space Science
ISSN :
0032-0633
Publisher :
Pergamon Press - An Imprint of Elsevier Science, Oxford, United Kingdom
Volume :
30
Pages :
1083-1089
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 30 October 2009

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