9-13 July 2012
Africa/Johannesburg timezone
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Lower and upper thermospheric wind variations during magnetically quiet days

Presented by Dr. William Tafon SIVLA, Dr. Heather MCCREADIE on 10 Jul 2012 from 17:30 to 19:30
Type: Poster Presentation
Session: Poster Session
Track: Track D2 - Space Science

Abstract

The mesosphere/lower thermosphere and thermospheric F-regions are dynamically coupled through thermospheric winds, tides and waves. The regular fluctuations in the earth's magnetic field on quiet days are caused by dynamo-induced currents which flow in the ionosphere/thermosphere system.The ionospheric dynamo is driven by tidal winds from the lower atmosphere. This paper presents simultaneous mesosphere/lower thermosphere and upper thermospheric region wind observations during a quiet magnetic period using data from TIMED and CHAMP satellites.

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