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Atmosphere 2017, 8(3), 49; doi:10.3390/atmos8030049

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
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)
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Abstract

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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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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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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