Reference : The latitudinal gradient of nitric oxide in the thermosphere
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/27398
The latitudinal gradient of nitric oxide in the thermosphere
English
Cravens, T. E. [Michigan, University, Ann Arbor, Mich.]
Gérard, Jean-Claude mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP) >]
Stewart, A. I. [Colorado, University, Boulder, Colo.]
Rusch, D. W. [Colorado, University, Boulder, Colo.]
1-Jun-1979
Journal of Geophysical Research
American Geophysical Union (AGU)
84
2675-2680
Yes (verified by ORBi)
International
0148-0227
2156-2202
Washington
USA
[en] ATMOSPHERIC COMPOSITION ; ATMOSPHERIC TEMPERATURE ; LATITUDE ; NITRIC OXIDE ; TEMPERATURE GRADIENTS ; THERMOSPHERE ; ATMOSPHERIC MODELS ; EXPLORER 51 SATELLITE ; INCOHERENT SCATTERING ; MAGNETIC EFFECTS ; MASS SPECTROSCOPY ; OXYGEN ATOMS
[en] Theoretical calculations of nitric oxide altitude profiles are made at five different latitudes by using neutral temperatures and composition primarily from the MSIS (mass spectrometer and incoherent scatter) model. The nitric oxide calculated for an altitude of 105 km remains nearly constant with increasing latitude. Observations made by the ultraviolet nitric oxide instrument on the Atmosphere Explorer C satellite show that at low magnetic activity (Ap value of approximately 4), the NO density at 105 km agrees with the theory; however, at moderate levels of activity it increases with latitude. This discrepancy between the theoretical and observed latitudinal gradients of nitric oxide suggests the transport of NO from a high latitude source to lower latitudes. At 200 km the theoretical and observed latitudinal gradients are in reasonable agreement, an indication that the knowledge of the local composition and temperature is sufficient to model nitric oxide at this altitude.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/27398
10.1029/JA084iA06p02675
http://adsabs.harvard.edu/abs/1979JGR....84.2675C
A&AA ID. AAA025.082.103

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