A Spectral Rotary Analysis of Gravity Waves: An Application During One of the SOUTHTRAC Flights
To understand the main orographic and non-orographic sources of gravity waves (GWs) over South America during an Experiment (Rapp et al., 2021, https://doi.org/10.1175/BAMS-D-20-0034.1), we propose the application of a rotational spectral analysis based on methods originally developed for oceanograp...
Published in: | Journal of Geophysical Research: Atmospheres |
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Main Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://elib.dlr.de/193127/ https://elib.dlr.de/193127/1/JGR%20Atmospheres%20-%202022%20-%20Torre%20-%20A%20Spectral%20Rotary%20Analysis%20of%20Gravity%20Waves%20An%20Application%20During%20One%20of%20the%20SOUTHTRAC.pdf https://doi.org/10.1029/2022JD037139 |
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ftdlr:oai:elib.dlr.de:193127 2023-07-23T04:15:48+02:00 A Spectral Rotary Analysis of Gravity Waves: An Application During One of the SOUTHTRAC Flights de la Torre, Alejandro Alexander, Peter Marcos, T. Hierro, R. Llamedo, P. Hormaechea, Jose Luis Preusse, Peter Geldenhuys, Markus Krasauskas, Lukas Giez, Andreas Kaifler, Bernd Kaifler, Natalie Rapp, Markus 2022-12-05 application/pdf https://elib.dlr.de/193127/ https://elib.dlr.de/193127/1/JGR%20Atmospheres%20-%202022%20-%20Torre%20-%20A%20Spectral%20Rotary%20Analysis%20of%20Gravity%20Waves%20An%20Application%20During%20One%20of%20the%20SOUTHTRAC.pdf https://doi.org/10.1029/2022JD037139 en eng Wiley https://elib.dlr.de/193127/1/JGR%20Atmospheres%20-%202022%20-%20Torre%20-%20A%20Spectral%20Rotary%20Analysis%20of%20Gravity%20Waves%20An%20Application%20During%20One%20of%20the%20SOUTHTRAC.pdf de la Torre, Alejandro und Alexander, Peter und Marcos, T. und Hierro, R. und Llamedo, P. und Hormaechea, Jose Luis und Preusse, Peter und Geldenhuys, Markus und Krasauskas, Lukas und Giez, Andreas und Kaifler, Bernd und Kaifler, Natalie und Rapp, Markus (2022) A Spectral Rotary Analysis of Gravity Waves: An Application During One of the SOUTHTRAC Flights. Journal of Geophysical Research: Atmospheres, 128 (1), Seiten 1-27. Wiley. doi:10.1029/2022JD037139 <https://doi.org/10.1029/2022JD037139>. ISSN 2169-897X. cc_by_nc_nd Institut für Physik der Atmosphäre Lidar Mess- und Sensortechnik OP Zeitschriftenbeitrag PeerReviewed 2022 ftdlr https://doi.org/10.1029/2022JD037139 2023-07-02T23:20:20Z To understand the main orographic and non-orographic sources of gravity waves (GWs) over South America during an Experiment (Rapp et al., 2021, https://doi.org/10.1175/BAMS-D-20-0034.1), we propose the application of a rotational spectral analysis based on methods originally developed for oceanographic studies. This approach is deployed in a complex scenario of large-amplitude GWs by applying it to reanalysis data. We divide the atmospheric region of interest into two height intervals. The simulations are compared with lidar measurements during one of the flights. From the degree of polarization and the total energy of the GWs, the contribution of the upward and downward wave packets is described as a function of their vertical wavenumbers. At low levels, a larger downward energy flux is observed in a few significant harmonics, suggesting inertial GWs radiated at polar night jet levels, and below, near to a cold front. In contrast, the upward GW energy flux, per unit area, is larger than the downward flux, as expected over mountainous areas. The main sub-regions of upward GW energy flux are located above Patagonia, the Antarctic Peninsula and only some oceanic sectors. Above the sea, there are alternating sub-regions dominated by linearly polarized GWs and sectors of downward GWs. At the upper levels, the total available GW energy per unit mass is higher than at the lower levels. Regions with different degrees of polarization are distributed in elongated bands. A satisfactory comparison is made with an analysis based on the phase difference between temperature and vertical wind disturbances. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula polar night German Aerospace Center: elib - DLR electronic library Antarctic Antarctic Peninsula Patagonia The Antarctic Journal of Geophysical Research: Atmospheres 128 1 |
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Open Polar |
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German Aerospace Center: elib - DLR electronic library |
op_collection_id |
ftdlr |
language |
English |
topic |
Institut für Physik der Atmosphäre Lidar Mess- und Sensortechnik OP |
spellingShingle |
Institut für Physik der Atmosphäre Lidar Mess- und Sensortechnik OP de la Torre, Alejandro Alexander, Peter Marcos, T. Hierro, R. Llamedo, P. Hormaechea, Jose Luis Preusse, Peter Geldenhuys, Markus Krasauskas, Lukas Giez, Andreas Kaifler, Bernd Kaifler, Natalie Rapp, Markus A Spectral Rotary Analysis of Gravity Waves: An Application During One of the SOUTHTRAC Flights |
topic_facet |
Institut für Physik der Atmosphäre Lidar Mess- und Sensortechnik OP |
description |
To understand the main orographic and non-orographic sources of gravity waves (GWs) over South America during an Experiment (Rapp et al., 2021, https://doi.org/10.1175/BAMS-D-20-0034.1), we propose the application of a rotational spectral analysis based on methods originally developed for oceanographic studies. This approach is deployed in a complex scenario of large-amplitude GWs by applying it to reanalysis data. We divide the atmospheric region of interest into two height intervals. The simulations are compared with lidar measurements during one of the flights. From the degree of polarization and the total energy of the GWs, the contribution of the upward and downward wave packets is described as a function of their vertical wavenumbers. At low levels, a larger downward energy flux is observed in a few significant harmonics, suggesting inertial GWs radiated at polar night jet levels, and below, near to a cold front. In contrast, the upward GW energy flux, per unit area, is larger than the downward flux, as expected over mountainous areas. The main sub-regions of upward GW energy flux are located above Patagonia, the Antarctic Peninsula and only some oceanic sectors. Above the sea, there are alternating sub-regions dominated by linearly polarized GWs and sectors of downward GWs. At the upper levels, the total available GW energy per unit mass is higher than at the lower levels. Regions with different degrees of polarization are distributed in elongated bands. A satisfactory comparison is made with an analysis based on the phase difference between temperature and vertical wind disturbances. |
format |
Article in Journal/Newspaper |
author |
de la Torre, Alejandro Alexander, Peter Marcos, T. Hierro, R. Llamedo, P. Hormaechea, Jose Luis Preusse, Peter Geldenhuys, Markus Krasauskas, Lukas Giez, Andreas Kaifler, Bernd Kaifler, Natalie Rapp, Markus |
author_facet |
de la Torre, Alejandro Alexander, Peter Marcos, T. Hierro, R. Llamedo, P. Hormaechea, Jose Luis Preusse, Peter Geldenhuys, Markus Krasauskas, Lukas Giez, Andreas Kaifler, Bernd Kaifler, Natalie Rapp, Markus |
author_sort |
de la Torre, Alejandro |
title |
A Spectral Rotary Analysis of Gravity Waves: An Application During One of the SOUTHTRAC Flights |
title_short |
A Spectral Rotary Analysis of Gravity Waves: An Application During One of the SOUTHTRAC Flights |
title_full |
A Spectral Rotary Analysis of Gravity Waves: An Application During One of the SOUTHTRAC Flights |
title_fullStr |
A Spectral Rotary Analysis of Gravity Waves: An Application During One of the SOUTHTRAC Flights |
title_full_unstemmed |
A Spectral Rotary Analysis of Gravity Waves: An Application During One of the SOUTHTRAC Flights |
title_sort |
spectral rotary analysis of gravity waves: an application during one of the southtrac flights |
publisher |
Wiley |
publishDate |
2022 |
url |
https://elib.dlr.de/193127/ https://elib.dlr.de/193127/1/JGR%20Atmospheres%20-%202022%20-%20Torre%20-%20A%20Spectral%20Rotary%20Analysis%20of%20Gravity%20Waves%20An%20Application%20During%20One%20of%20the%20SOUTHTRAC.pdf https://doi.org/10.1029/2022JD037139 |
geographic |
Antarctic Antarctic Peninsula Patagonia The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Patagonia The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula polar night |
genre_facet |
Antarc* Antarctic Antarctic Peninsula polar night |
op_relation |
https://elib.dlr.de/193127/1/JGR%20Atmospheres%20-%202022%20-%20Torre%20-%20A%20Spectral%20Rotary%20Analysis%20of%20Gravity%20Waves%20An%20Application%20During%20One%20of%20the%20SOUTHTRAC.pdf de la Torre, Alejandro und Alexander, Peter und Marcos, T. und Hierro, R. und Llamedo, P. und Hormaechea, Jose Luis und Preusse, Peter und Geldenhuys, Markus und Krasauskas, Lukas und Giez, Andreas und Kaifler, Bernd und Kaifler, Natalie und Rapp, Markus (2022) A Spectral Rotary Analysis of Gravity Waves: An Application During One of the SOUTHTRAC Flights. Journal of Geophysical Research: Atmospheres, 128 (1), Seiten 1-27. Wiley. doi:10.1029/2022JD037139 <https://doi.org/10.1029/2022JD037139>. ISSN 2169-897X. |
op_rights |
cc_by_nc_nd |
op_doi |
https://doi.org/10.1029/2022JD037139 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
128 |
container_issue |
1 |
_version_ |
1772176826612842496 |