Fritts, D. C. and Wang, Ling and Taylor, Michael J. and Pautet, Pierre-Dominique and Criddle, Neal R. and Kaifler, Bernd and Eckermann, Stephen D. and Liley, Ben (2019) Large-Amplitude Mountain Waves in the Mesosphere Observed on 21 June 2014 During DEEPWAVE: 2. Nonlinear Dynamics, Wave Breaking, and Instabilities. Journal of Geophysical Research: Atmospheres, 124 (17-18), pp. 10006-10032. Wiley. doi: 10.1029/2019JD030932. ISSN 0148-0227.
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Official URL: https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2019JD030899
Abstract
Weak cross-mountain flow over the New Zealand South Island on 21 June 2014 during the Deep Propagating Gravity Wave Experiment (DEEPWAVE) led to large-amplitude mountain waves in the mesosphere and lower thermosphere. The mesosphere and lower thermosphere responses were observed by ground-based instruments in the lee of the Southern Alps supporting DEEPWAVE, including an Advanced Mesosphere Temperature Mapper, a Rayleigh lidar, an All-Sky Imager, and a Fabry-Perot Interferometer. The character of the mountain wave responses at horizontal scales of ~30–90 km reveals strong “sawtooth” variations in the temperature field suggesting large vertical and horizontal displacements leading to mountain wave overturning. The observations also reveal multiple examples of apparent instability structures within the mountain wave field that arose accompanying large amplitudes and exhibited various forms, scales, and evolutions. This paper employs detailed data analyses and results of numerical modeling of gravity wave instability dynamics to interpret these mountain wave dynamics, their instability forms, scales, and expected environmental influences. Results demonstrate apparently general instability pathways for breaking of large-amplitude gravity waves in environments without and with mean shear. A close link is also found between large-amplitude gravity waves and the dominant instability scales that may yield additional abilities to quantify gravity wave characteristics and effects.
Item URL in elib: | https://elib.dlr.de/130402/ | |||||||||||||||||||||||||||
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Document Type: | Article | |||||||||||||||||||||||||||
Title: | Large-Amplitude Mountain Waves in the Mesosphere Observed on 21 June 2014 During DEEPWAVE: 2. Nonlinear Dynamics, Wave Breaking, and Instabilities | |||||||||||||||||||||||||||
Authors: |
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Date: | 30 August 2019 | |||||||||||||||||||||||||||
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: | 124 | |||||||||||||||||||||||||||
DOI : | 10.1029/2019JD030932 | |||||||||||||||||||||||||||
Page Range: | pp. 10006-10032 | |||||||||||||||||||||||||||
Publisher: | Wiley | |||||||||||||||||||||||||||
ISSN: | 0148-0227 | |||||||||||||||||||||||||||
Status: | Published | |||||||||||||||||||||||||||
Keywords: | mountain waves, mesospheric mountain waves, gravity wave breaking, gravity wave instabilities | |||||||||||||||||||||||||||
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 Institute of Atmospheric Physics > Lidar | |||||||||||||||||||||||||||
Deposited By: | Kaifler, Dr. Natalie | |||||||||||||||||||||||||||
Deposited On: | 12 Nov 2019 09:03 | |||||||||||||||||||||||||||
Last Modified: | 12 Nov 2019 09:03 |
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