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Investigation of gravity wave activity based on operational radiosonde data from 13 years (1997-2009): climatology and possible induced variability

Kramer, Ricarda and Wüst, Sabine and Bittner, Michael (2016) Investigation of gravity wave activity based on operational radiosonde data from 13 years (1997-2009): climatology and possible induced variability. Journal of Atmospheric and Solar-Terrestrial Physics, 140, pp. 23-33. Elsevier. DOI: 10.1016/j.jastp.2016.01.014 ISSN 1364-6826

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Official URL: http://www.sciencedirect.com/science/article/pii/S1364682616300141

Abstract

Atmospheric gravity waves (GWs) are important for the Dynamics of the atmosphere. The analysis of 13 years of routine radiosonde data from Prague (50.01° N, 14.27° E) with temporal highly resolved temperature, pressure and wind measurements is presented in order to derive a climatology of gravity wave activity in the lower tratosphere. An annual cycle with a maximum during winter and a minimum during summer is identified. Gravity wave activity is twice as high during winter as during summer. When analyzing individual years, maxima of gravity wave activity and vertical flux of horizontal momentum often appears together with minima in surface pressure. We speculate therefore that at least parts of the interannual variations of gravity wave activity are due to cyclones. These findings are encouraged by the results of wavelet analysis. They show similar periods in vertical flux of horizontal momentum and pressure variance time series. These features may be attributed to planetary waves.

Item URL in elib:https://elib.dlr.de/98718/
Document Type:Article
Title:Investigation of gravity wave activity based on operational radiosonde data from 13 years (1997-2009): climatology and possible induced variability
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kramer, Ricardaricarda.kramer (at) dlr.deUNSPECIFIED
Wüst, Sabinesabine.wuest (at) dlr.deUNSPECIFIED
Bittner, Michaelmichael.bittner (at) dlr.deUNSPECIFIED
Date:2016
Journal or Publication Title:Journal of Atmospheric and Solar-Terrestrial Physics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:140
DOI :10.1016/j.jastp.2016.01.014
Page Range:pp. 23-33
Publisher:Elsevier
ISSN:1364-6826
Status:Published
Keywords:gravity waves, stratosphere, radiosondes, extratropical cyclone
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:German Remote Sensing Data Center > Atmosphere
Deposited By: Kramer, Ricarda
Deposited On:11 Nov 2015 15:08
Last Modified:31 Jul 2019 19:55

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