Heating Of Ambient Electrons In Thermosphere Under Varying Solar Activity Conditions

Details Heating Of Ambient Electrons In Thermosphere Under Varying Solar Activity Conditions Heating Of Ambient Electrons In Thermosphere Under Varying Solar Activity Conditions

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsa51b1949s&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #SA51B-1949

Physics

[0300] Atmospheric Composition And Structure, [0310] Atmospheric Composition And Structure / Airglow And Aurora, [0355] Atmospheric Composition And Structure / Thermosphere: Composition And Chemistry, [0358] Atmospheric Composition And Structure / Thermosphere: Energy Deposition

Scientific paper

The suprathermal electron flux plays a very important role in the production of various airglow emissions. The solar Extreme Ultra Violet (EUV) photons and X-rays are mainly responsible for the production of suprathermal electrons in the atmosphere. These suprathermal electrons further cause heating of ambient electrons in the thermosphere. In the present study the heating rate of ambient electrons in the thermosphere under the effect of varying solar activity is studied. The suprathermal electron flux is calculated as a function of suprathermal electron energy. The fluxes are calculated at various levels of solar activity and various geographic locations during the period of five years (2001-2005). This flux is further used to calculate the ambient electron heating rate in the thermosphere. It has been found that the maximum electron heating rate is near 30oN latitude. It is found that the maximum electron heating rate does not vary linearly with F10.7 solar index. The altitude of the peak heating rate does not show any appreciable variation with the solar activity at a fixed latitude. The altitude of peak electron heating rate moves upwards as the latitude increases from equator towards pole at the fixed value of F10.7 solar index.

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