Longitudinal MLT wind structure at higher mid-latitudes as seen by meteor radars at central and Eastern Europe (13°E/49°E)
| Autor: | Friederike Lilienthal, Christoph Jacobi, E. G. Merzlyakov, Qian Wu, Dmitriy Korotyshkin |
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| Rok vydání: | 2019 |
| Předmět: |
Meteor (satellite)
Atmospheric Science Wind gradient 010504 meteorology & atmospheric sciences Aerospace Engineering Astronomy and Astrophysics Atmospheric sciences 01 natural sciences Wind speed Mesosphere Geophysics Prevailing winds Space and Planetary Science Middle latitudes 0103 physical sciences Zonal flow General Earth and Planetary Sciences Thermosphere 010303 astronomy & astrophysics Geology 0105 earth and related environmental sciences |
| Zdroj: | Advances in Space Research. 63:3154-3166 |
| ISSN: | 0273-1177 |
| DOI: | 10.1016/j.asr.2019.01.036 |
| Popis: | The mid-latitude mesosphere and lower thermosphere (MLT) wind speeds measured by two SKiYMET meteor radars (MRs) at Collm (51°N, 13°E) and Kazan (56°N, 49°E) during 2016–2017 were analyzed to study longitudinal wind structures. The differences between monthly mean prevailing wind speeds and tidal amplitudes were compared with the corresponding differences obtained from TIMED/TIDI satellite winds and gradient wind speeds from the AURA/MLS instrument. It is shown that the MR wind difference between the two sites is statistically significant. The difference of the horizontal prevailing winds can be explained by a superposition of the background zonal flow, which is different at the two latitudes, with stationary planetary waves of different origin. Non-migrating tides contribute significantly to the difference of the semidiurnal tidal winds between the two sites. |
| Databáze: | OpenAIRE |
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