Meteor radar observations of mesopause region long-period temperature oscillations

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Date
2016
Volume
14
Issue
Journal
Series Titel
Book Title
Publisher
Göttingen : Copernicus
Abstract

Meteor radar observations of mesosphere/lower thermosphere (MLT) daily temperatures have been performed at Collm, Germany since August 2004. The data have been analyzed with respect to long-period oscillations at time scales of 2–30 days. The results reveal that oscillations with periods of up to 6 days are more frequently observed during summer, while those with longer periods have larger amplitudes during winter. The oscillations may be considered as the signature of planetary waves. The results are compared with analyses from radar wind measurements. Moreover, the temperature oscillations show considerable year-to-year variability. In particular, amplitudes of the quasi 5-day oscillation have increased during the last decade, and the quasi 10-day oscillations are larger if the equatorial stratospheric winds are eastward.

Description
Keywords
Ionosphere, Radar, 5-day oscillations, Daily temperatures, Mesopause region, Mesosphere/lower thermospheres, Planetary Waves, Stratospheric winds, Temperature oscillations, Wind measurement, Radar measurement
Citation
Jacobi, Ch., Samtleben, N., & Stober, G. (2016). Meteor radar observations of mesopause region long-period temperature oscillations. 14. https://doi.org//10.5194/ars-14-169-2016
License
CC BY 3.0 Unported