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Ø The radiation dissociates the molecular species of O2 and N2 into atomic species of O and N, thus changing the composition of the thermosphere from a molecular atmosphere near the mesopause around 85 km to an atomic atmosphere. Ø O, N, H in the thermosphere are created due to photodissociation.
The diurnal variation of the thermosphere is the key feature for a theoretical understanding of the entire thermospheric structure and of its energy balance (heating processes, heat loss, conduction and convec tion).
Thermospheric neutral temperatures measured by Fabry-Perot Interferometers (FPI) from airglow are presented from both auroral and polar cap sites. These are compared to both Incoherent Scatter Radar (ISR) derived values and modelled temperatures from MSIS.
1 sie 2009 · The thermosphere is the transition region from the atmosphere to space. Both the solar ultraviolet radiation and the solar wind energy inputs have caused significant thermospheric variations...
Thermosphere. In subject area: Physics and Astronomy. The thermosphere is a layer of the Earth's atmosphere that extends from 100 km to around 1000 km. It is characterized by high atmospheric temperature and is influenced by variations in solar extreme ultraviolet radiation and geomagnetic activity.
5 sie 2011 · Abstract. Neutral density shows complicated temporal and spatial variations driven by external forcing of the thermosphere/ionosphere system, internal dynamics, and thermosphere and ionosphere coupling. Temporal variations include abrupt changes with a time scale of minutes to hours, diurnal variation, multi-day variation, solar-rotational ...
The diurnal variation of the thermosphere is the key feature for a theoretical understanding of the entire thermospheric structure and of its energy balance (heating processes, heat loss, conduction and convection).
