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Open AccessArticle

On the Interpretation of Gravity Wave Measurements by Ground-Based Lidars

Institute of Atmospheric Physics, DLR Oberpfaffenhofen Münchener Str. 20, 82234 Oberpfaffenhofen, Germany
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Academic Editor: Vanda Grubišić
Atmosphere 2017, 8(3), 49; https://doi.org/10.3390/atmos8030049
Received: 2 December 2016 / Revised: 30 January 2017 / Accepted: 18 February 2017 / Published: 1 March 2017
(This article belongs to the Special Issue Atmospheric Gravity Waves)
This paper asks the simple question: How can we interpret vertical time series of middle atmosphere gravity wave measurements by ground-based temperature lidars? Linear wave theory is used to show that the association of identified phase lines with quasi-monochromatic waves should be considered with great care. The ambient mean wind has a substantial effect on the inclination of the detected phase lines. The lack of knowledge about the wind might lead to a misinterpretation of the vertical propagation direction of the observed gravity waves. In particular, numerical simulations of three archetypal atmospheric mountain wave regimes show a sensitivity of virtual lidar observations on the position relative to the mountain and on the scale of the mountain. View Full-Text
Keywords: internal gravity waves; middle atmosphere; lidar internal gravity waves; middle atmosphere; lidar
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Dörnbrack, A.; Gisinger, S.; Kaifler, B. On the Interpretation of Gravity Wave Measurements by Ground-Based Lidars. Atmosphere 2017, 8, 49.

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