Knobloch, Stefanie and Dörnbrack, Andreas and Kaifler, Bernd and Rapp, Markus (2023) Horizontal Wavenumber Spectra Across the Middle Atmosphere From Airborne Lidar Observations During the 2019 Southern Hemispheric SSW. Geophysical Research Letters, 50 (14), e2023GL104357. Wiley. doi: 10.1029/2023GL104357. ISSN 0094-8276.
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Official URL: https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023GL104357
Abstract
Horizontal wavenumber spectra across the middle atmosphere are investigated based on density measurements with the Airborne Lidar for Middle Atmosphere research (ALIMA) in the vicinity of the Southern Andes, the Drake passage and the Antarctic peninsula in September 2019. The probed horizontal scales range from 2000 to 25 km. Spectral slopes are close to k−5/3 in the stratosphere and get shallower for horizontal wavelengths <200 km in the mesosphere. The spectral slopes are shown to be statistically robust with the presented number of flight legs despite the unknown orientation of true wave vectors relative to the flight track using synthetic data and a Monte Carlo approach. The largest spectral amplitudes are found over the ocean rather than over topography. The 2019 sudden stratospheric warming caused a critical level for MWs and a reduction of spectral amplitudes at horizontal wavelengths of about 200 km in the mesosphere.
Item URL in elib: | https://elib.dlr.de/196137/ | ||||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||||
Title: | Horizontal Wavenumber Spectra Across the Middle Atmosphere From Airborne Lidar Observations During the 2019 Southern Hemispheric SSW | ||||||||||||||||||||
Authors: |
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Date: | 20 July 2023 | ||||||||||||||||||||
Journal or Publication Title: | Geophysical Research Letters | ||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||
Open Access: | Yes | ||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||||||
Volume: | 50 | ||||||||||||||||||||
DOI: | 10.1029/2023GL104357 | ||||||||||||||||||||
Page Range: | e2023GL104357 | ||||||||||||||||||||
Publisher: | Wiley | ||||||||||||||||||||
ISSN: | 0094-8276 | ||||||||||||||||||||
Status: | Published | ||||||||||||||||||||
Keywords: | Gravity waves, Middle atmosphere, Lidar, ALIMA, spectral analysis | ||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||
HGF - Program: | Space | ||||||||||||||||||||
HGF - Program Themes: | Earth Observation | ||||||||||||||||||||
DLR - Research area: | Raumfahrt | ||||||||||||||||||||
DLR - Program: | R EO - Earth Observation | ||||||||||||||||||||
DLR - Research theme (Project): | R - Middle Atmosphere | ||||||||||||||||||||
Location: | Oberpfaffenhofen | ||||||||||||||||||||
Institutes and Institutions: | Institute of Atmospheric Physics > Transport Meteorology Institute of Atmospheric Physics > Lidar Institute of Atmospheric Physics | ||||||||||||||||||||
Deposited By: | Knobloch, Stefanie | ||||||||||||||||||||
Deposited On: | 24 Jul 2023 09:00 | ||||||||||||||||||||
Last Modified: | 24 Jul 2023 09:00 |
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