Meteor radar observations of mesopause region long-period temperature oscillations
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 ...
| Main Authors: | , , |
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| Format: | Article |
| Language: | deu |
| Published: |
Copernicus Publications
2016-09-01
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| Series: | Advances in Radio Science |
| Online Access: | http://www.adv-radio-sci.net/14/169/2016/ars-14-169-2016.pdf |
| Summary: | 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. |
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| ISSN: | 1684-9965 1684-9973 |