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Atmospheric Conditions during the Deep Propagating Gravity Wave Experiment (DEEPWAVE)

Gisinger, Sonja and Dörnbrack, Andreas and Matthias, Vivien and Doyle, James D. and Eckermann, Stephen D. and Ehard, Benedikt and Hoffmann, Lars and Kaifler, Bernd and Kruse, Christopher G. and Rapp, Markus (2017) Atmospheric Conditions during the Deep Propagating Gravity Wave Experiment (DEEPWAVE). Monthly Weather Review, null. American Meteorological Society. DOI: 10.1175/MWR-D-16-0435.1 ISSN 0027-0644

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Official URL: https://doi.org/10.1175/MWR-D-16-0435.1

Abstract

This paper describes results of a comprehensive analysis of the atmospheric conditions during the DEEPWAVE campaign in austral winter 2014. Different datasets and diagnostics are combined to characterize the background atmosphere from the troposphere to the upper mesosphere. We report on how weather regimes and the atmospheric state compare to climatological conditions and also explore how they relate to the airborne and ground-based gravity wave observations. Key results of this study are the dominance of tropospheric blocking situations and low-level southwesterly flows over New Zealand during June, July, and August 2014. A varying tropopause inversion layer was found to be connected to varying vertical energy fluxes and is, therefore, an important feature with respect to wave reflection. The subtropical jet was frequently diverted south from its climatological position at 30°S and was most often involved in strong forcing events of mountain waves at the Southern Alps. The polar front jet was typically responsible for moderate and weak tropospheric forcing of mountain waves. The stratospheric planetary wave activity amplified in July leading to a displacement of the Antarctic polar vortex. This reduced the stratospheric wind minimum by about 10 m s-1 above New Zealand making breaking of large amplitude gravity waves more likely. Satellite observations in the upper stratosphere revealed that orographic gravity wave variances for 2014 were largest in May, June and July, i.e. the period of the DEEPWAVE field phase.

Item URL in elib:https://elib.dlr.de/113489/
Document Type:Article
Additional Information:Please note the AMS Copyright Policy, available under https://www.ametsoc.org/ams/index.cfm/publications/ethical-guidelines-and-ams-policies/ams-copyright-policy/
Title:Atmospheric Conditions during the Deep Propagating Gravity Wave Experiment (DEEPWAVE)
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Gisinger, SonjaDLR, IPAhttps://orcid.org/0000-0001-8188-4458
Dörnbrack, AndreasDLR, IPAUNSPECIFIED
Matthias, VivienLeibniz-Institut für Atmosphärenphysik, KühlungsbornUNSPECIFIED
Doyle, James D.NRL, Monterey, CA, USAUNSPECIFIED
Eckermann, Stephen D.NRL, Washington, DC, USAUNSPECIFIED
Ehard, BenediktDLR, IPAhttps://orcid.org/0000-0003-0517-8134
Hoffmann, LarsForschungszentrum JülichUNSPECIFIED
Kaifler, BerndDLR, IPAhttps://orcid.org/0000-0002-5891-242X
Kruse, Christopher G.Yale University, New Haven, CT, USAUNSPECIFIED
Rapp, MarkusDLR, IPAUNSPECIFIED
Date:2017
Journal or Publication Title:Monthly Weather Review
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:0
DOI :10.1175/MWR-D-16-0435.1
Page Range:null
Publisher:American Meteorological Society
ISSN:0027-0644
Status:Published
Keywords: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):Vorhaben Mittlere Atmosphäre
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Transport Meteorology
Institute of Atmospheric Physics > Lidar
Institute of Atmospheric Physics
Deposited By: Gisinger, Sonja
Deposited On:03 Aug 2017 08:57
Last Modified:31 Jul 2019 20:11

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