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| Titel |
Investigation of gravity waves using horizontally resolved radial velocity measurements |
| VerfasserIn |
G. Stober, S. Sommer, M. Rapp, R. Latteck |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 6, no. 10 ; Nr. 6, no. 10 (2013-10-30), S.2893-2905 |
| Datensatznummer |
250085096
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| Publikation (Nr.) |
 copernicus.org/amt-6-2893-2013.pdf |
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| Zusammenfassung |
| The Middle Atmosphere Alomar Radar System (MAARSY) on the island of Andøya in
Northern Norway (69.3° N, 16.0° E) observes polar mesospheric
summer echoes (PMSE). These echoes are used as tracers of atmospheric
dynamics to investigate the horizontal wind variability at high temporal and
spatial resolution. MAARSY has the capability of pulse-to-pulse beam
steering allowing for systematic scanning experiments to study the horizontal
structure of the backscatterers as well as to measure the radial velocities
for each beam direction. Here we present a method to retrieve gravity wave
parameters from these horizontally resolved radial wind variations by
applying velocity azimuth display and volume velocity processing. Based on
the observations a detailed comparison of the two wind analysis techniques is
carried out in order to determine the zonal and meridional wind as well as to
measure first-order inhomogeneities. Further, we demonstrate the possibility
to resolve the horizontal wave properties, e.g., horizontal wavelength, phase
velocity and propagation direction. The robustness of the estimated gravity
wave parameters is tested by a simple atmospheric model. |
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