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
- Institución
- Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
- OAI Identificador
- oai:digital.cic.gba.gob.ar:11746/11835
Ver los metadatos del registro completo
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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 |
status_str |
publishedVersion |
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 |
dc.rights.none.fl_str_mv |
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openAccess |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ |
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