Lidar observations of large-amplitude mountain waves in the stratosphere above Tierra del Fuego, Argentina
Abstract Large-amplitude internal gravity waves were observed using Rayleigh lidar temperature soundings above Rio Grande, Argentina ( $$54^\circ \; \hbox {S}$$ 54 ∘ S , $$68^\circ \; \hbox {W}$$ 68 ∘ W ), in the period 16–23 June 2018. Temperature perturbations in the upper stratosphere amounted to...
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Online Access: | http://dx.doi.org/10.1038/s41598-020-71443-7 https://www.nature.com/articles/s41598-020-71443-7.pdf https://www.nature.com/articles/s41598-020-71443-7 |
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crspringernat:10.1038/s41598-020-71443-7 2023-05-15T18:02:15+02:00 Lidar observations of large-amplitude mountain waves in the stratosphere above Tierra del Fuego, Argentina Kaifler, N. Kaifler, B. Dörnbrack, A. Rapp, M. Hormaechea, J. L. de la Torre, A. Helmholtz association European Community Germany ministry for Education and Research German Science foundation Projekt DEAL 2020 http://dx.doi.org/10.1038/s41598-020-71443-7 https://www.nature.com/articles/s41598-020-71443-7.pdf https://www.nature.com/articles/s41598-020-71443-7 en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Scientific Reports volume 10, issue 1 ISSN 2045-2322 Multidisciplinary journal-article 2020 crspringernat https://doi.org/10.1038/s41598-020-71443-7 2022-01-04T12:16:56Z Abstract Large-amplitude internal gravity waves were observed using Rayleigh lidar temperature soundings above Rio Grande, Argentina ( $$54^\circ \; \hbox {S}$$ 54 ∘ S , $$68^\circ \; \hbox {W}$$ 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 Springer Nature (via Crossref) Argentina Austral Scientific Reports 10 1 |
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Springer Nature (via Crossref) |
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language |
English |
topic |
Multidisciplinary |
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Multidisciplinary Kaifler, N. Kaifler, B. Dörnbrack, A. Rapp, M. Hormaechea, J. L. de la Torre, A. Lidar observations of large-amplitude mountain waves in the stratosphere above Tierra del Fuego, Argentina |
topic_facet |
Multidisciplinary |
description |
Abstract Large-amplitude internal gravity waves were observed using Rayleigh lidar temperature soundings above Rio Grande, Argentina ( $$54^\circ \; \hbox {S}$$ 54 ∘ S , $$68^\circ \; \hbox {W}$$ 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. |
author2 |
Helmholtz association European Community Germany ministry for Education and Research German Science foundation Projekt DEAL |
format |
Article in Journal/Newspaper |
author |
Kaifler, N. Kaifler, B. Dörnbrack, A. Rapp, M. Hormaechea, J. L. de la Torre, A. |
author_facet |
Kaifler, N. Kaifler, B. Dörnbrack, A. Rapp, M. Hormaechea, J. L. de la Torre, A. |
author_sort |
Kaifler, N. |
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 |
Springer Science and Business Media LLC |
publishDate |
2020 |
url |
http://dx.doi.org/10.1038/s41598-020-71443-7 https://www.nature.com/articles/s41598-020-71443-7.pdf https://www.nature.com/articles/s41598-020-71443-7 |
geographic |
Argentina Austral |
geographic_facet |
Argentina Austral |
genre |
polar night Tierra del Fuego |
genre_facet |
polar night Tierra del Fuego |
op_source |
Scientific Reports volume 10, issue 1 ISSN 2045-2322 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-020-71443-7 |
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Scientific Reports |
container_volume |
10 |
container_issue |
1 |
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1766172059139833856 |