Articles | Volume 12, issue 1
Atmos. Meas. Tech., 12, 457–469, 2019

Special issue: Layered phenomena in the mesopause region (ACP/AMT inter-journal...

Atmos. Meas. Tech., 12, 457–469, 2019

Research article 25 Jan 2019

Research article | 25 Jan 2019

Seasonal and intra-diurnal variability of small-scale gravity waves in OH airglow at two Alpine stations

Patrick Hannawald et al.

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Observations of OH airglow from ground, aircraft, and satellite: investigation of wave-like structures before a minor stratospheric warming
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High-resolution observations of small-scale gravity waves and turbulence features in the OH airglow layer
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Cited articles

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Baker, D. J. and Stair Jr., A. T.: Rocket Measurements of the Altitude Distributions of the Hydroxyl Airglow, Phys. Scripta, 37, 611–622, 1988. a
Becker, E.: Sensitivity of the Upper Mesosphere to the Lorenz Energy Cycle of the Troposphere, J. Atmos. Sci., 66, 647–666,, 2009. a
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Coble, M. R., Papen, G. C., and Gardner, C. S.: Computing Two-Dimensional Unambiguous Horizontal Wavenumber Spectra from OH Airglow Images, IEEE T. Geosci. Remote, 36, 368–382, 1998. a
Short summary
We use a near-infrared camera for the investigation of gravity waves. The camera observes the airglow layer, which is modulated by the gravity waves. The image processing, including the removal of the stars is explained. We describe the analysis with a 2D fast Fourier transform and automatic derivation of the wave parameters. The results show a clear seasonal and intra-diurnal variability, which is characterised in order to improve our understanding of gravity waves in the middle atmosphere.