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| Titel |
Mesosphere/lower thermosphere prevailing winds at northern midlatitudes – long-term tendencies derived from radar observations and modeling |
| VerfasserIn |
Christoph Jacobi, Christoph Geißler, Alan Manson, Chris Meek, Eugeny Merzlyakov, Yuri Portnyagin, Friederike Lilienthal, Amelie Krug, Liying Qian, Uwe Berger |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250104094
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| Publikation (Nr.) |
 EGU/EGU2015-3517.pdf |
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| Zusammenfassung |
| Radar observations of mesosphere/lower thermosphere (MLT) monthly mean winds as observed by different radars at Saskatoon (Canada), Collm (Germany), and Obninsk (Russia) show corresponding long-term trends and changes of these around the middle 1990s. Zonal prevailing winds are generally increasing with time, but there is a tendency for a change in trend in the 1990s. This is also visible in the meridional wind, which increases in the 1980s but decreases in more recent years. Numerical experiments with WACCM-x and LIMA circulation models give a similar tendency. We show some experiments to analyze whether the changes of MLT winds can be attributed to the combined effect of continuous CO2 increase and stratospheric ozone decrease, and the turnaround of ozone changes in the 1990s. |
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