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AMT | Articles | Volume 13, issue 9
Atmos. Meas. Tech., 13, 5117–5128, 2020
https://doi.org/10.5194/amt-13-5117-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Atmos. Meas. Tech., 13, 5117–5128, 2020
https://doi.org/10.5194/amt-13-5117-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 29 Sep 2020

Research article | 29 Sep 2020

Intra-annual variations of spectrally resolved gravity wave activity in the upper mesosphere/lower thermosphere (UMLT) region

René Sedlak et al.

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High-resolution observations of small-scale gravity waves and turbulence features in the OH airglow layer
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Subject: Others (Wind, Precipitation, Temperature, etc.) | Technique: Remote Sensing | Topic: Data Processing and Information Retrieval
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Cited articles

Baker, D. J. and Stair, A. T.: Rocket Measurements of the Altitude Distributions of the Hydroxyl Airglow, Phys. Scripta, 37, 611–622, 1988. 
Becker, E. and Vadas, S. L.: Secondary Gravity Waves in the Winter Mesosphere: Results From a High-Resolution Global Circulation Model, J. Geophys. Res.-Atmos., 123, 2605–2627, https://doi.org/10.1002/2017JD027460, 2018. 
Becker, E., Grygalashvyly, M., and Sonnemann, G. R.: Gravity wave mixing effects on the OH*-layer, Adv. Space Res., 65, 175–188, https://doi.org/10.1016/j.asr.2019.09.043, 2020. 
Beldon, C. L. and Mitchell, N. J.: Gravity waves in the mesopause region observed by meteor radar, 2: Climatologies of gravity waves in the Antarctic and Arctic, J. Atmos. Sol.-Terr. Phy., 71, 875–884, 2009. 
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Gravity wave (GW) activity in the UMLT in the period range 6-480 min is calculated by applying a wavelet analysis to nocturnal temperature time series derived from OH* airglow spectrometers. We analyse measurements from eight different locations at different latitudes. GW activity shows strong period dependence. We find hardly any seasonal variability for periods below 60 min and a semi-annual cycle for periods longer than 60 min that evolves into an annual cycle around a period of 200 min.
Gravity wave (GW) activity in the UMLT in the period range 6-480 min is calculated by applying a...
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