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Longitudinal MLT wind structure at higher mid-latitudes as seen by meteor radars at central and Eastern Europe (13°E/49°E).
- Source :
-
Advances in Space Research . May2019, Vol. 63 Issue 10, p3154-3166. 13p. - Publication Year :
- 2019
-
Abstract
- Highlights • MLT winds measured by SKiYMET radars at Collm (51°N, 13°E) and Kazan (56°N, 49°E). • Regular seasonal changes in the difference between the wind parameters are observed. • SPWs make a significant contribution to mean winds mostly in winter. • Non-migrating tides considerably contribute to the difference between SDT winds. Abstract 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. [ABSTRACT FROM AUTHOR]
- Subjects :
- *STANDING waves
*ROSSBY waves
*METEORS
*WIND speed
*WINDS
*RADAR
Subjects
Details
- Language :
- English
- ISSN :
- 02731177
- Volume :
- 63
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Advances in Space Research
- Publication Type :
- Academic Journal
- Accession number :
- 135915630
- Full Text :
- https://doi.org/10.1016/j.asr.2019.01.036