Seasonal, diurnal, and solar cycle variations of the longitudinal wave structure in the low-latitude thermosphere
Abstract
Recent studies have identified the wave-like longitudinal structure in the low-latitude thermosphere. Direct penetration of atmospheric tides or the ion-neutral interaction is presumably the source of the thermospheric wave structure, but its source has not yet been clarified. Accurate knowledge of the characteristics of the thermospheric wave structure is essential to identify its driving mechanism. In this study, we examine the seasonal, diurnal, and solar cycle variations of the amplitude and phase in the thermospheric longitudinal wave structure during the solar cycle 23 by analyzing the total mass density data from the CHAMP satellite and the neutral composition data from TIMED/GUVI. Our extensive study by using two different thermospheric data source during the full solar cycle will provide insight to an interpretation of the source of the thermospheric wave structure.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2010
- Bibcode:
- 2010AGUFMSA31A1707K
- Keywords:
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- 0355 ATMOSPHERIC COMPOSITION AND STRUCTURE / Thermosphere: composition and chemistry;
- 3369 ATMOSPHERIC PROCESSES / Thermospheric dynamics