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 ([Formula: see text] , [Formula: see text] ), in the period 16–23 June 2018. Temperature perturbations in the upper stratosphere amounted to 80 K peak-to-peak and potential ene...
Published in: | Scientific Reports |
---|---|
Main Authors: | , , , , , |
Format: | Text |
Language: | English |
Published: |
Nature Publishing Group UK
2020
|
Subjects: | |
Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7471968/ http://www.ncbi.nlm.nih.gov/pubmed/32884058 https://doi.org/10.1038/s41598-020-71443-7 |
id |
ftpubmed:oai:pubmedcentral.nih.gov:7471968 |
---|---|
record_format |
openpolar |
spelling |
ftpubmed:oai:pubmedcentral.nih.gov:7471968 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. 2020-09-03 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7471968/ http://www.ncbi.nlm.nih.gov/pubmed/32884058 https://doi.org/10.1038/s41598-020-71443-7 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7471968/ http://www.ncbi.nlm.nih.gov/pubmed/32884058 http://dx.doi.org/10.1038/s41598-020-71443-7 © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Sci Rep Article Text 2020 ftpubmed https://doi.org/10.1038/s41598-020-71443-7 2020-09-13T00:22:09Z Large-amplitude internal gravity waves were observed using Rayleigh lidar temperature soundings above Rio Grande, Argentina ([Formula: see text] , [Formula: see text] ), 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. Text polar night Tierra del Fuego PubMed Central (PMC) Argentina Austral Scientific Reports 10 1 |
institution |
Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Article |
spellingShingle |
Article 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 |
Article |
description |
Large-amplitude internal gravity waves were observed using Rayleigh lidar temperature soundings above Rio Grande, Argentina ([Formula: see text] , [Formula: see text] ), 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 |
Text |
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 |
Nature Publishing Group UK |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7471968/ http://www.ncbi.nlm.nih.gov/pubmed/32884058 https://doi.org/10.1038/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 |
Sci Rep |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7471968/ http://www.ncbi.nlm.nih.gov/pubmed/32884058 http://dx.doi.org/10.1038/s41598-020-71443-7 |
op_rights |
© The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-020-71443-7 |
container_title |
Scientific Reports |
container_volume |
10 |
container_issue |
1 |
_version_ |
1766172053182873600 |