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Lidar observations of gravity wave activity in the middle atmosphere above Davis (69◦S, 78◦E), Antarctica

Kaifler, Bernd and Lübken, F.-J. and Höffner, J. and Morris, R. J. and Viehl, T. P. (2015) Lidar observations of gravity wave activity in the middle atmosphere above Davis (69◦S, 78◦E), Antarctica. Journal of Geophysical Research: Atmospheres, 120 (10), pp. 4506-4521. Wiley. DOI: 10.1002/2014JD022879 ISBN 2169-8996 ISSN 0148-0227

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/2014JD022879/abstract

Abstract

A 16 month series of lidar measurements in the stratosphere and mesosphere/lower thermosphere (MLT) region over Davis Station (69◦S, 78◦5 E) in Antarctica is used to study 6 gravity waves. The unprecedentedly large number of observations totaling 2310 hours al7 lows us investigate in great detail seasonal variations in gravity wave activity. In the strato8 sphere the gravity wave potential energy density (GWPED) is shown to have a large sea9 sonal variation with a double peak in winter and minimum in summer. We find conser10 vative wave propagation to occur between 29 and 41 km altitude in winter as well as 11 in summer whereas smaller energy growth rates were observed in spring and autumn. 12 These results are consistent with selective critical-level filtering of gravity waves in the 13 lower stratosphere. In the MLT region the GWPED is found to have a semi-annual os14 cillation with maxima in winter and summer. The structure of the winter peak is iden15 tical to that in the stratosphere, suggesting that the gravity wave flux reaching the MLT 16 region is controlled by the wind field near the tropopause level.

Item URL in elib:https://elib.dlr.de/92941/
Document Type:Article
Title:Lidar observations of gravity wave activity in the middle atmosphere above Davis (69◦S, 78◦E), Antarctica
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kaifler, BerndDLR, IPAUNSPECIFIED
Lübken, F.-J.Leibniz-Institute of Atmospheric Physics, Kühlungsborn, GermanyUNSPECIFIED
Höffner, J.Univ. RostockUNSPECIFIED
Morris, R. J.Australian Antarctic Division, TasmaniaUNSPECIFIED
Viehl, T. P.Leibniz-Institute of Atmospheric Physics, Kühlungsborn, GermanyUNSPECIFIED
Date:15 May 2015
Journal or Publication Title:Journal of Geophysical Research: Atmospheres
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:120
DOI :10.1002/2014JD022879
Page Range:pp. 4506-4521
Publisher:Wiley
ISSN:0148-0227
ISBN:2169-8996
Status:Published
Keywords:gravity waves mesosphere stratosphere middle atmosphere lidar Antarctica gravity waves
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Atmosphären- und Klimaforschung
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Lidar
Deposited By: Kaifler, Dr. Natalie
Deposited On:10 Jun 2015 11:03
Last Modified:31 Jul 2019 19:50

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