11 Years of Rayleigh Lidar Observations of Gravity Wave Activity Above the Southern Tip of South America

Autores
Llamedo, Pablo; Salvador, J.; de la Torre, Alejandro; Quiroga, J.; Alexander, P.; Hierro, Rodrigo; Schmidt, T.; Pazmiño, A.; Quel, E.
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Gravity wave (GW) activity is analyzed using temperature (T) data retrieved from a Rayleigh light detection and ranging (lidar) at Río Gallegos, Argentina (51.6°S, 69.3°W). GW characteristics are derived from 302 nights of observations providing more than 1,018 hr of high-resolution lidar data between 20- and 56-km height from August 2005 to December 2015. T measurements are performed by a Differential Absorption Lidar instrument. This lidar was the southernmost outside Antarctica until the end of 2017. Río Gallegos is an exceptional place to observe large amplitude GW. Every lidar measurement is classified according to its relative position to the polar vortex. The lidar measurements are compared with collocated Sounding of the Atmosphere using Broadband Emission Radiometry and Global Positioning System-Radio Occultation data. The different instruments show different windows of the GW spectrum, providing complementary observations. In general, the geometric mean of the specific GW potential energy (PE) is larger during winter and spring than during summer and autumn. The largest geometric mean of PE is found inside the vortex and decreases monotonically at its edge, outside it and when there is no vortex. The same behavior is observed with satellite data. On average, it can be seen that lidar observations provide larger PE values than limb sounding measurements. From a Morlet continuous wavelet transform analysis, three distinct modes are captured from Sounding of the Atmosphere using Broadband Emission Radiometry and from Global Positioning System-Radio Occultation data at the upper and lower stratosphere, respectively. In particular, a systematic 3.5- to 4-year oscillation, possibly related to El Niño–Southern Oscillation is observed.
Materia
Meteorología y Ciencias Atmosféricas
Lidar
Gravity waves activity
Polar vortex
GPS RO; SABER
Southen South America
Stratosphere
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
CIC Digital (CICBA)
Institución
Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
OAI Identificador
oai:digital.cic.gba.gob.ar:11746/11835

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network_acronym_str CICBA
repository_id_str 9441
network_name_str CIC Digital (CICBA)
spelling 11 Years of Rayleigh Lidar Observations of Gravity Wave Activity Above the Southern Tip of South AmericaLlamedo, PabloSalvador, J.de la Torre, AlejandroQuiroga, J.Alexander, P.Hierro, RodrigoSchmidt, T.Pazmiño, A.Quel, E.Meteorología y Ciencias AtmosféricasLidarGravity waves activityPolar vortexGPS RO; SABERSouthen South AmericaStratosphereGravity wave (GW) activity is analyzed using temperature (T) data retrieved from a Rayleigh light detection and ranging (lidar) at Río Gallegos, Argentina (51.6°S, 69.3°W). GW characteristics are derived from 302 nights of observations providing more than 1,018 hr of high-resolution lidar data between 20- and 56-km height from August 2005 to December 2015. T measurements are performed by a Differential Absorption Lidar instrument. This lidar was the southernmost outside Antarctica until the end of 2017. Río Gallegos is an exceptional place to observe large amplitude GW. Every lidar measurement is classified according to its relative position to the polar vortex. The lidar measurements are compared with collocated Sounding of the Atmosphere using Broadband Emission Radiometry and Global Positioning System-Radio Occultation data. The different instruments show different windows of the GW spectrum, providing complementary observations. In general, the geometric mean of the specific GW potential energy (PE) is larger during winter and spring than during summer and autumn. The largest geometric mean of PE is found inside the vortex and decreases monotonically at its edge, outside it and when there is no vortex. The same behavior is observed with satellite data. On average, it can be seen that lidar observations provide larger PE values than limb sounding measurements. From a Morlet continuous wavelet transform analysis, three distinct modes are captured from Sounding of the Atmosphere using Broadband Emission Radiometry and from Global Positioning System-Radio Occultation data at the upper and lower stratosphere, respectively. In particular, a systematic 3.5- to 4-year oscillation, possibly related to El Niño–Southern Oscillation is observed.2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttps://digital.cic.gba.gob.ar/handle/11746/11835enginfo:eu-repo/semantics/altIdentifier/doi/10.1029/2018JD028673info:eu-repo/semantics/altIdentifier/issn/2169-8996info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/reponame:CIC Digital (CICBA)instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Airesinstacron:CICBA2025-09-29T13:40:22Zoai:digital.cic.gba.gob.ar:11746/11835Institucionalhttp://digital.cic.gba.gob.arOrganismo científico-tecnológicoNo correspondehttp://digital.cic.gba.gob.ar/oai/snrdmarisa.degiusti@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:94412025-09-29 13:40:22.545CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Airesfalse
dc.title.none.fl_str_mv 11 Years of Rayleigh Lidar Observations of Gravity Wave Activity Above the Southern Tip of South America
title 11 Years of Rayleigh Lidar Observations of Gravity Wave Activity Above the Southern Tip of South America
spellingShingle 11 Years of Rayleigh Lidar Observations of Gravity Wave Activity Above the Southern Tip of South America
Llamedo, Pablo
Meteorología y Ciencias Atmosféricas
Lidar
Gravity waves activity
Polar vortex
GPS RO; SABER
Southen South America
Stratosphere
title_short 11 Years of Rayleigh Lidar Observations of Gravity Wave Activity Above the Southern Tip of South America
title_full 11 Years of Rayleigh Lidar Observations of Gravity Wave Activity Above the Southern Tip of South America
title_fullStr 11 Years of Rayleigh Lidar Observations of Gravity Wave Activity Above the Southern Tip of South America
title_full_unstemmed 11 Years of Rayleigh Lidar Observations of Gravity Wave Activity Above the Southern Tip of South America
title_sort 11 Years of Rayleigh Lidar Observations of Gravity Wave Activity Above the Southern Tip of South America
dc.creator.none.fl_str_mv Llamedo, Pablo
Salvador, J.
de la Torre, Alejandro
Quiroga, J.
Alexander, P.
Hierro, Rodrigo
Schmidt, T.
Pazmiño, A.
Quel, E.
author Llamedo, Pablo
author_facet Llamedo, Pablo
Salvador, J.
de la Torre, Alejandro
Quiroga, J.
Alexander, P.
Hierro, Rodrigo
Schmidt, T.
Pazmiño, A.
Quel, E.
author_role author
author2 Salvador, J.
de la Torre, Alejandro
Quiroga, J.
Alexander, P.
Hierro, Rodrigo
Schmidt, T.
Pazmiño, A.
Quel, E.
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Meteorología y Ciencias Atmosféricas
Lidar
Gravity waves activity
Polar vortex
GPS RO; SABER
Southen South America
Stratosphere
topic Meteorología y Ciencias Atmosféricas
Lidar
Gravity waves activity
Polar vortex
GPS RO; SABER
Southen South America
Stratosphere
dc.description.none.fl_txt_mv Gravity wave (GW) activity is analyzed using temperature (T) data retrieved from a Rayleigh light detection and ranging (lidar) at Río Gallegos, Argentina (51.6°S, 69.3°W). GW characteristics are derived from 302 nights of observations providing more than 1,018 hr of high-resolution lidar data between 20- and 56-km height from August 2005 to December 2015. T measurements are performed by a Differential Absorption Lidar instrument. This lidar was the southernmost outside Antarctica until the end of 2017. Río Gallegos is an exceptional place to observe large amplitude GW. Every lidar measurement is classified according to its relative position to the polar vortex. The lidar measurements are compared with collocated Sounding of the Atmosphere using Broadband Emission Radiometry and Global Positioning System-Radio Occultation data. The different instruments show different windows of the GW spectrum, providing complementary observations. In general, the geometric mean of the specific GW potential energy (PE) is larger during winter and spring than during summer and autumn. The largest geometric mean of PE is found inside the vortex and decreases monotonically at its edge, outside it and when there is no vortex. The same behavior is observed with satellite data. On average, it can be seen that lidar observations provide larger PE values than limb sounding measurements. From a Morlet continuous wavelet transform analysis, three distinct modes are captured from Sounding of the Atmosphere using Broadband Emission Radiometry and from Global Positioning System-Radio Occultation data at the upper and lower stratosphere, respectively. In particular, a systematic 3.5- to 4-year oscillation, possibly related to El Niño–Southern Oscillation is observed.
description Gravity wave (GW) activity is analyzed using temperature (T) data retrieved from a Rayleigh light detection and ranging (lidar) at Río Gallegos, Argentina (51.6°S, 69.3°W). GW characteristics are derived from 302 nights of observations providing more than 1,018 hr of high-resolution lidar data between 20- and 56-km height from August 2005 to December 2015. T measurements are performed by a Differential Absorption Lidar instrument. This lidar was the southernmost outside Antarctica until the end of 2017. Río Gallegos is an exceptional place to observe large amplitude GW. Every lidar measurement is classified according to its relative position to the polar vortex. The lidar measurements are compared with collocated Sounding of the Atmosphere using Broadband Emission Radiometry and Global Positioning System-Radio Occultation data. The different instruments show different windows of the GW spectrum, providing complementary observations. In general, the geometric mean of the specific GW potential energy (PE) is larger during winter and spring than during summer and autumn. The largest geometric mean of PE is found inside the vortex and decreases monotonically at its edge, outside it and when there is no vortex. The same behavior is observed with satellite data. On average, it can be seen that lidar observations provide larger PE values than limb sounding measurements. From a Morlet continuous wavelet transform analysis, three distinct modes are captured from Sounding of the Atmosphere using Broadband Emission Radiometry and from Global Positioning System-Radio Occultation data at the upper and lower stratosphere, respectively. In particular, a systematic 3.5- to 4-year oscillation, possibly related to El Niño–Southern Oscillation is observed.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
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dc.identifier.none.fl_str_mv https://digital.cic.gba.gob.ar/handle/11746/11835
url https://digital.cic.gba.gob.ar/handle/11746/11835
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1029/2018JD028673
info:eu-repo/semantics/altIdentifier/issn/2169-8996
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collection CIC Digital (CICBA)
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repository.mail.fl_str_mv marisa.degiusti@sedici.unlp.edu.ar
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