Evaluation of methods for gravity wave extraction from middle-atmospheric lidar temperature measurements
書誌事項
- 公開日
- 2015-11-05
- 権利情報
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- https://creativecommons.org/licenses/by/3.0/
- DOI
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- 10.5194/amt-8-4645-2015
- 公開者
- Copernicus GmbH
説明
<jats:p>Abstract. 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.</jats:p>
収録刊行物
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- Atmospheric Measurement Techniques
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Atmospheric Measurement Techniques 8 (11), 4645-4655, 2015-11-05
Copernicus GmbH