Kaifler, Natalie und Kaifler, Bernd und Dörnbrack, Andreas und Rapp, Markus und Hormaechea, J. L. und de la Torre, Alejandro (2020) Lidar observations of large-amplitude mountain waves in the stratosphere above Tierra del Fuego, Argentina. Scientific Reports (14529), Seiten 1-10. Nature Publishing Group. doi: 10.1038/s41598-020-71443-7. ISSN 2045-2322.
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Offizielle URL: https://www.nature.com/articles/s41598-020-71443-7
Kurzfassung
Large-amplitude internal gravity waves were observed using Rayleigh lidar temperature soundings above Rio Grande, Argentina (54∘S, 68∘W), in the period 16–23 June 2018. Temperature perturbations in the upper stratosphere amounted to 80 K peak-to-peak and potential energy densities exceeded 400 J/kg. The measured amplitudes and phase alignments agree well with operational analyses and short-term forecasts of the Integrated Forecasting System (IFS) of the European Centre for Medium-Range Weather Forecasts (ECMWF), implying that these quasi-steady gravity waves resulted from the airflow across the Andes. We estimate gravity wave momentum fluxes larger than 100 mPa applying independent methods to both lidar data and IFS model data. These mountain waves deposited momentum at the inner edge of the polar night jet and led to a long-lasting deceleration of the stratospheric flow. The accumulated mountain wave drag affected the stratospheric circulation several thousand kilometers downstream. In the 2018 austral winter, mountain wave events of this magnitude contributed more than 30% of the total potential energy density, signifying their importance by perturbing the stratospheric polar vortex.
elib-URL des Eintrags: | https://elib.dlr.de/135928/ | ||||||||||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||
Titel: | Lidar observations of large-amplitude mountain waves in the stratosphere above Tierra del Fuego, Argentina | ||||||||||||||||||||||||||||
Autoren: |
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Datum: | 3 September 2020 | ||||||||||||||||||||||||||||
Erschienen in: | Scientific Reports | ||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||||||||||
Gold Open Access: | Ja | ||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||
DOI: | 10.1038/s41598-020-71443-7 | ||||||||||||||||||||||||||||
Seitenbereich: | Seiten 1-10 | ||||||||||||||||||||||||||||
Verlag: | Nature Publishing Group | ||||||||||||||||||||||||||||
ISSN: | 2045-2322 | ||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||
Stichwörter: | lidar, mountain waves, gravity waves | ||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||||||||||||||||||
HGF - Programmthema: | Erdbeobachtung | ||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | R EO - Erdbeobachtung | ||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Mittlere Atmosphäre | ||||||||||||||||||||||||||||
Standort: | Oberpfaffenhofen | ||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Physik der Atmosphäre > Lidar Institut für Physik der Atmosphäre > Verkehrsmeteorologie Institut für Physik der Atmosphäre | ||||||||||||||||||||||||||||
Hinterlegt von: | Kaifler, Dr. Natalie | ||||||||||||||||||||||||||||
Hinterlegt am: | 14 Sep 2020 14:32 | ||||||||||||||||||||||||||||
Letzte Änderung: | 24 Okt 2023 11:07 |
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