Lidar observations of large-amplitude mountain waves in the stratosphere above Tierra del Fuego, Argentina
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....
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ftdlr:oai:elib.dlr.de:135928 2023-11-12T04:24:55+01:00 Lidar observations of large-amplitude mountain waves in the stratosphere above Tierra del Fuego, Argentina Kaifler, Natalie Kaifler, Bernd Dörnbrack, Andreas Rapp, Markus Hormaechea, J. L. de la Torre, Alejandro 2020-09-03 application/pdf https://elib.dlr.de/135928/ https://elib.dlr.de/135928/1/s41598-020-71443-7.pdf https://www.nature.com/articles/s41598-020-71443-7 en eng Nature Publishing Group https://elib.dlr.de/135928/1/s41598-020-71443-7.pdf 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 <https://doi.org/10.1038/s41598-020-71443-7>. ISSN 2045-2322. cc_by info:eu-repo/semantics/openAccess Lidar Verkehrsmeteorologie Institut für Physik der Atmosphäre Zeitschriftenbeitrag PeerReviewed info:eu-repo/semantics/article 2020 ftdlr https://doi.org/10.1038/s41598-020-71443-7 2023-10-30T00:24:01Z 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. Article in Journal/Newspaper polar night Tierra del Fuego German Aerospace Center: elib - DLR electronic library Austral Argentina Scientific Reports 10 1 |
institution |
Open Polar |
collection |
German Aerospace Center: elib - DLR electronic library |
op_collection_id |
ftdlr |
language |
English |
topic |
Lidar Verkehrsmeteorologie Institut für Physik der Atmosphäre |
spellingShingle |
Lidar Verkehrsmeteorologie Institut für Physik der Atmosphäre Kaifler, Natalie Kaifler, Bernd Dörnbrack, Andreas Rapp, Markus Hormaechea, J. L. de la Torre, Alejandro Lidar observations of large-amplitude mountain waves in the stratosphere above Tierra del Fuego, Argentina |
topic_facet |
Lidar Verkehrsmeteorologie Institut für Physik der Atmosphäre |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Kaifler, Natalie Kaifler, Bernd Dörnbrack, Andreas Rapp, Markus Hormaechea, J. L. de la Torre, Alejandro |
author_facet |
Kaifler, Natalie Kaifler, Bernd Dörnbrack, Andreas Rapp, Markus Hormaechea, J. L. de la Torre, Alejandro |
author_sort |
Kaifler, Natalie |
title |
Lidar observations of large-amplitude mountain waves in the stratosphere above Tierra del Fuego, Argentina |
title_short |
Lidar observations of large-amplitude mountain waves in the stratosphere above Tierra del Fuego, Argentina |
title_full |
Lidar observations of large-amplitude mountain waves in the stratosphere above Tierra del Fuego, Argentina |
title_fullStr |
Lidar observations of large-amplitude mountain waves in the stratosphere above Tierra del Fuego, Argentina |
title_full_unstemmed |
Lidar observations of large-amplitude mountain waves in the stratosphere above Tierra del Fuego, Argentina |
title_sort |
lidar observations of large-amplitude mountain waves in the stratosphere above tierra del fuego, argentina |
publisher |
Nature Publishing Group |
publishDate |
2020 |
url |
https://elib.dlr.de/135928/ https://elib.dlr.de/135928/1/s41598-020-71443-7.pdf https://www.nature.com/articles/s41598-020-71443-7 |
geographic |
Austral Argentina |
geographic_facet |
Austral Argentina |
genre |
polar night Tierra del Fuego |
genre_facet |
polar night Tierra del Fuego |
op_relation |
https://elib.dlr.de/135928/1/s41598-020-71443-7.pdf 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 <https://doi.org/10.1038/s41598-020-71443-7>. ISSN 2045-2322. |
op_rights |
cc_by info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41598-020-71443-7 |
container_title |
Scientific Reports |
container_volume |
10 |
container_issue |
1 |
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1782339368846884864 |