|Reference : Transport of aurorally produced N/2D/ by winds in the high latitude thermosphere|
|Scientific journals : Article|
|Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics|
|Transport of aurorally produced N/2D/ by winds in the high latitude thermosphere|
|Gérard, Jean-Claude [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP) >]|
|Roble, R. G. [National Center for Atmospheric Research, Boulder, CO]|
|Planetary and Space Science|
|Pergamon Press - An Imprint of Elsevier Science|
|Yes (verified by ORBi)|
|[en] ATMOSPHERIC COMPOSITION ; AURORAL ZONES ; GAS TRANSPORT ; MERIDIONAL FLOW ; NITROGEN ATOMS ; THERMOSPHERE ; ATMOSPHERIC MODELS ; AURORAL IONIZATION ; EMISSION SPECTRA ; ENERGY LEVELS ; EXPLORER 55 SATELLITE ; LIGHT EMISSION ; NITRIC OXIDE ; TIME DEPENDENCE ; TWO DIMENSIONAL MODELS|
|[en] A time-dependent, two-dimensional model is developed for describing the meridional circulation of thermospheric odd nitrogen species produced in the auroral zone. The model is based on a previous model by Roble and Gary (1979) extended to upper altitude transport of the nitrogen species. Assumptions made include the existence of a steady neutral wind flowing from low to high latitudes, and an initial background due to scattered Lyman-beta and nightglow emissions. The aurora is also assumed as steady, along with a constant ion production. Predictions made using the model are compared with observations with the Atmosphere Explorer C spacecraft and rocket sounding measurements of the 5200 A distribution near the day-side polar cusp. The model requires thermospheric winds of 100-200 m/sec, flowing from day to nightside. Convective velocities near 1000 m/sec were detected by the Explorer spacecraft, as well as a day-to-nightside flow at the cusp.|
|Researchers ; Professionals ; Students|
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