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| Titel |
Evaluation of methods for gravity wave extraction from middle-atmospheric lidar temperature measurements |
| VerfasserIn |
B. Ehard, B. Kaifler, N. Kaifler, M. Rapp |
| 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 ; 8, no. 11 ; Nr. 8, no. 11 (2015-11-05), S.4645-4655 |
| Datensatznummer |
250116675
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| Publikation (Nr.) |
 copernicus.org/amt-8-4645-2015.pdf |
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| Zusammenfassung |
| This study evaluates commonly used methods of extracting
gravity-wave-induced temperature perturbations from lidar measurements. The
spectral response of these methods is characterized with the help of
a synthetic data set with known temperature perturbations added to
a realistic background temperature profile. The simulations are
carried out with the background temperature being either constant or
varying in time to evaluate the sensitivity to temperature
perturbations not caused by gravity waves. The different methods are
applied to lidar measurements over New Zealand, and the performance of
the algorithms is evaluated. We find that the Butterworth filter
performs best if gravity waves over a wide range of periods are to be
extracted from lidar temperature measurements. The running mean method
gives good results if only gravity waves with short periods are to be analyzed. |
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