High Wave Activity Observed in Patagonia, Southern America: Generation by a Cyclone Passage over Andes Mountain Range
The Antarctic peninsula and Patagonia region (South of South America) have recently been identified as one of the regions with the highest gravity wave activity in the world. In this work, the generation and propagation of gravity waves in the Patagonia region in an event of strong wave activity fro...
Published in: | Quarterly Journal of the Royal Meteorological Society |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
|
Subjects: | |
Online Access: | http://hdl.handle.net/11336/8550 |
id |
ftconicet:oai:ri.conicet.gov.ar:11336/8550 |
---|---|
record_format |
openpolar |
spelling |
ftconicet:oai:ri.conicet.gov.ar:11336/8550 2023-10-09T21:47:13+02:00 High Wave Activity Observed in Patagonia, Southern America: Generation by a Cyclone Passage over Andes Mountain Range Pulido, Manuel Arturo Rodas, Claudio Dechat, Diego Lucini, Maria Magdalena application/pdf http://hdl.handle.net/11336/8550 eng eng Wiley info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/qj.1983/abstract info:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.1002/qj.1983 http://hdl.handle.net/11336/8550 Pulido, Manuel Arturo; Rodas, Claudio; Dechat, Diego; Lucini, Maria Magdalena; High Wave Activity Observed in Patagonia, Southern America: Generation by a Cyclone Passage over Andes Mountain Range; Wiley; Quarterly Journal Of The Royal Meteorological Society; 139; 671; 1-2013; 451-466 0035-9009 1477-870X info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ Orographic Waves Patagonia Wave Breaking Ray Tracing https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1002/qj.1983 2023-09-24T18:27:47Z The Antarctic peninsula and Patagonia region (South of South America) have recently been identified as one of the regions with the highest gravity wave activity in the world. In this work, the generation and propagation of gravity waves in the Patagonia region in an event of strong wave activity from 30 October 1995 to 1 November 1995 is examined by means of radiosonde measurements and simulations with the Weather Research and Forecasting (WRF) model. The waves are generated by strong surface winds found near the Andes mountains at a latitude of 49-51◦S. The strong low-level winds are related to an extratropical cyclone that propagates south-eastward in the South Pacific ocean and approaches the western coast of the continent. The waves propagate southeast toward Tierra del Fuego and they continue their propagation over the Drake Passage. They are found to propagate long meridional (lateral) distances due to the shear background conditions. This fact is corroborated with WRF simulations and a novel technique that combines wavelet analysis and backward ray tracing. Therefore, this work provides further evidence that high gravity wave activity found by several works over Drake Passage may have an orographic origin. During the orographic wave event which lasts about 72 hours, the horizontal wavelength is unexpectedly found to change day-to-day. The analysis shows that changes in the near-surface meteorological conditions produced by the cyclone passage may trigger different components of the forcing orography. The orographic waves propagate toward their critical levels which are found at 25 km and above. The radiosonde measurements show that the wave is breaking continuously along a wide altitude range, this finding from measurements supports the picture of a continuous wave erosion along the ray path instead of an abrupt wave breaking for the examined wave event. Fil: Pulido, Manuel Arturo. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas Naturales y Agrimensura; Argentina. Consejo Nacional de ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Drake Passage Tierra del Fuego CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic The Antarctic Antarctic Peninsula Patagonia Drake Passage Pacific Argentina Nordeste ENVELOPE(-66.867,-66.867,-68.167,-68.167) Quarterly Journal of the Royal Meteorological Society 139 671 451 466 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
Orographic Waves Patagonia Wave Breaking Ray Tracing https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
Orographic Waves Patagonia Wave Breaking Ray Tracing https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Pulido, Manuel Arturo Rodas, Claudio Dechat, Diego Lucini, Maria Magdalena High Wave Activity Observed in Patagonia, Southern America: Generation by a Cyclone Passage over Andes Mountain Range |
topic_facet |
Orographic Waves Patagonia Wave Breaking Ray Tracing https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
The Antarctic peninsula and Patagonia region (South of South America) have recently been identified as one of the regions with the highest gravity wave activity in the world. In this work, the generation and propagation of gravity waves in the Patagonia region in an event of strong wave activity from 30 October 1995 to 1 November 1995 is examined by means of radiosonde measurements and simulations with the Weather Research and Forecasting (WRF) model. The waves are generated by strong surface winds found near the Andes mountains at a latitude of 49-51◦S. The strong low-level winds are related to an extratropical cyclone that propagates south-eastward in the South Pacific ocean and approaches the western coast of the continent. The waves propagate southeast toward Tierra del Fuego and they continue their propagation over the Drake Passage. They are found to propagate long meridional (lateral) distances due to the shear background conditions. This fact is corroborated with WRF simulations and a novel technique that combines wavelet analysis and backward ray tracing. Therefore, this work provides further evidence that high gravity wave activity found by several works over Drake Passage may have an orographic origin. During the orographic wave event which lasts about 72 hours, the horizontal wavelength is unexpectedly found to change day-to-day. The analysis shows that changes in the near-surface meteorological conditions produced by the cyclone passage may trigger different components of the forcing orography. The orographic waves propagate toward their critical levels which are found at 25 km and above. The radiosonde measurements show that the wave is breaking continuously along a wide altitude range, this finding from measurements supports the picture of a continuous wave erosion along the ray path instead of an abrupt wave breaking for the examined wave event. Fil: Pulido, Manuel Arturo. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas Naturales y Agrimensura; Argentina. Consejo Nacional de ... |
format |
Article in Journal/Newspaper |
author |
Pulido, Manuel Arturo Rodas, Claudio Dechat, Diego Lucini, Maria Magdalena |
author_facet |
Pulido, Manuel Arturo Rodas, Claudio Dechat, Diego Lucini, Maria Magdalena |
author_sort |
Pulido, Manuel Arturo |
title |
High Wave Activity Observed in Patagonia, Southern America: Generation by a Cyclone Passage over Andes Mountain Range |
title_short |
High Wave Activity Observed in Patagonia, Southern America: Generation by a Cyclone Passage over Andes Mountain Range |
title_full |
High Wave Activity Observed in Patagonia, Southern America: Generation by a Cyclone Passage over Andes Mountain Range |
title_fullStr |
High Wave Activity Observed in Patagonia, Southern America: Generation by a Cyclone Passage over Andes Mountain Range |
title_full_unstemmed |
High Wave Activity Observed in Patagonia, Southern America: Generation by a Cyclone Passage over Andes Mountain Range |
title_sort |
high wave activity observed in patagonia, southern america: generation by a cyclone passage over andes mountain range |
publisher |
Wiley |
url |
http://hdl.handle.net/11336/8550 |
long_lat |
ENVELOPE(-66.867,-66.867,-68.167,-68.167) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Patagonia Drake Passage Pacific Argentina Nordeste |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Patagonia Drake Passage Pacific Argentina Nordeste |
genre |
Antarc* Antarctic Antarctic Peninsula Drake Passage Tierra del Fuego |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Drake Passage Tierra del Fuego |
op_relation |
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/qj.1983/abstract info:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.1002/qj.1983 http://hdl.handle.net/11336/8550 Pulido, Manuel Arturo; Rodas, Claudio; Dechat, Diego; Lucini, Maria Magdalena; High Wave Activity Observed in Patagonia, Southern America: Generation by a Cyclone Passage over Andes Mountain Range; Wiley; Quarterly Journal Of The Royal Meteorological Society; 139; 671; 1-2013; 451-466 0035-9009 1477-870X |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1002/qj.1983 |
container_title |
Quarterly Journal of the Royal Meteorological Society |
container_volume |
139 |
container_issue |
671 |
container_start_page |
451 |
op_container_end_page |
466 |
_version_ |
1779310157511000064 |