Southern Argentina Agile Meteor Radar: System design and initial measurements of large-scale winds and tides

Autores
Fritts, D.C.; Janches, D.; Iimura, H.; Hocking, W. K.; Mitchell, N. J.; Stockwell, R. G.; Fuller, B.; Vandepeer, B.; Hormaechea, José Luis; Brunini, Claudio Antonio; Levato, Orlando Hugo
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Southern Argentina Agile Meteor Radar (SAAMER) was installed at Rio Grande on Tierra del Fuego (53.8°S, 67.8°W) in May 2008 and has been operational for ∼24 months. This paper describes the motivations for the radar design and its placement at the southern tip of South America, its operating modes and capabilities, and observations of the mean winds, planetary waves, and tides during its first ∼20 months of operation. SAAMER was specifically designed to provide very high resolution of large-scale motions and hopefully enable direct measurements of the vertical momentum flux by gravity waves, which have only been possible previously with dual- or multiple-beam radars and lidars or in situ measurements. SAAMER was placed on Tierra del Fuego because it was a region devoid of similar measurements, the latitude was anticipated to provide high sensitivity to an expected large semidiurnal tide, and the region is now recognized to be a "hot spot" of small-scale gravity wave activity extending from the troposphere into the mesosphere and lower thermosphere, perhaps the most dynamically active location on Earth. SAAMER was also intended to permit simultaneous enhanced meteor studies, including "head echo" and "nonspecular" measurements, which were previously possible only with high-power large-aperture radars. Initial measurements have defined the mean circulation and structure, exhibited planetary waves at various periods, and revealed large semidiurnal tide amplitudes and variability, with maximum amplitudes at higher altitudes often exceeding 60 m s-1 and amplitude modulations at periods from a few to ∼30 days.
Universidad Nacional De La Plata
Materia
Ciencias Astronómicas
Radar
Radar design
Argentina
Tierra del Fuego
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/82502

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spelling Southern Argentina Agile Meteor Radar: System design and initial measurements of large-scale winds and tidesFritts, D.C.Janches, D.Iimura, H.Hocking, W. K.Mitchell, N. J.Stockwell, R. G.Fuller, B.Vandepeer, B.Hormaechea, José LuisBrunini, Claudio AntonioLevato, Orlando HugoCiencias AstronómicasRadarRadar designArgentinaTierra del FuegoThe Southern Argentina Agile Meteor Radar (SAAMER) was installed at Rio Grande on Tierra del Fuego (53.8°S, 67.8°W) in May 2008 and has been operational for ∼24 months. This paper describes the motivations for the radar design and its placement at the southern tip of South America, its operating modes and capabilities, and observations of the mean winds, planetary waves, and tides during its first ∼20 months of operation. SAAMER was specifically designed to provide very high resolution of large-scale motions and hopefully enable direct measurements of the vertical momentum flux by gravity waves, which have only been possible previously with dual- or multiple-beam radars and lidars or in situ measurements. SAAMER was placed on Tierra del Fuego because it was a region devoid of similar measurements, the latitude was anticipated to provide high sensitivity to an expected large semidiurnal tide, and the region is now recognized to be a "hot spot" of small-scale gravity wave activity extending from the troposphere into the mesosphere and lower thermosphere, perhaps the most dynamically active location on Earth. SAAMER was also intended to permit simultaneous enhanced meteor studies, including "head echo" and "nonspecular" measurements, which were previously possible only with high-power large-aperture radars. Initial measurements have defined the mean circulation and structure, exhibited planetary waves at various periods, and revealed large semidiurnal tide amplitudes and variability, with maximum amplitudes at higher altitudes often exceeding 60 m s<SUP>-1</SUP> and amplitude modulations at periods from a few to ∼30 days.Universidad Nacional De La Plata2010info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/82502enginfo:eu-repo/semantics/altIdentifier/issn/01480227info:eu-repo/semantics/altIdentifier/doi/10.1029/2010JD013850info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:15:31Zoai:sedici.unlp.edu.ar:10915/82502Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:15:31.471SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Southern Argentina Agile Meteor Radar: System design and initial measurements of large-scale winds and tides
title Southern Argentina Agile Meteor Radar: System design and initial measurements of large-scale winds and tides
spellingShingle Southern Argentina Agile Meteor Radar: System design and initial measurements of large-scale winds and tides
Fritts, D.C.
Ciencias Astronómicas
Radar
Radar design
Argentina
Tierra del Fuego
title_short Southern Argentina Agile Meteor Radar: System design and initial measurements of large-scale winds and tides
title_full Southern Argentina Agile Meteor Radar: System design and initial measurements of large-scale winds and tides
title_fullStr Southern Argentina Agile Meteor Radar: System design and initial measurements of large-scale winds and tides
title_full_unstemmed Southern Argentina Agile Meteor Radar: System design and initial measurements of large-scale winds and tides
title_sort Southern Argentina Agile Meteor Radar: System design and initial measurements of large-scale winds and tides
dc.creator.none.fl_str_mv Fritts, D.C.
Janches, D.
Iimura, H.
Hocking, W. K.
Mitchell, N. J.
Stockwell, R. G.
Fuller, B.
Vandepeer, B.
Hormaechea, José Luis
Brunini, Claudio Antonio
Levato, Orlando Hugo
author Fritts, D.C.
author_facet Fritts, D.C.
Janches, D.
Iimura, H.
Hocking, W. K.
Mitchell, N. J.
Stockwell, R. G.
Fuller, B.
Vandepeer, B.
Hormaechea, José Luis
Brunini, Claudio Antonio
Levato, Orlando Hugo
author_role author
author2 Janches, D.
Iimura, H.
Hocking, W. K.
Mitchell, N. J.
Stockwell, R. G.
Fuller, B.
Vandepeer, B.
Hormaechea, José Luis
Brunini, Claudio Antonio
Levato, Orlando Hugo
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Radar
Radar design
Argentina
Tierra del Fuego
topic Ciencias Astronómicas
Radar
Radar design
Argentina
Tierra del Fuego
dc.description.none.fl_txt_mv The Southern Argentina Agile Meteor Radar (SAAMER) was installed at Rio Grande on Tierra del Fuego (53.8°S, 67.8°W) in May 2008 and has been operational for ∼24 months. This paper describes the motivations for the radar design and its placement at the southern tip of South America, its operating modes and capabilities, and observations of the mean winds, planetary waves, and tides during its first ∼20 months of operation. SAAMER was specifically designed to provide very high resolution of large-scale motions and hopefully enable direct measurements of the vertical momentum flux by gravity waves, which have only been possible previously with dual- or multiple-beam radars and lidars or in situ measurements. SAAMER was placed on Tierra del Fuego because it was a region devoid of similar measurements, the latitude was anticipated to provide high sensitivity to an expected large semidiurnal tide, and the region is now recognized to be a "hot spot" of small-scale gravity wave activity extending from the troposphere into the mesosphere and lower thermosphere, perhaps the most dynamically active location on Earth. SAAMER was also intended to permit simultaneous enhanced meteor studies, including "head echo" and "nonspecular" measurements, which were previously possible only with high-power large-aperture radars. Initial measurements have defined the mean circulation and structure, exhibited planetary waves at various periods, and revealed large semidiurnal tide amplitudes and variability, with maximum amplitudes at higher altitudes often exceeding 60 m s<SUP>-1</SUP> and amplitude modulations at periods from a few to ∼30 days.
Universidad Nacional De La Plata
description The Southern Argentina Agile Meteor Radar (SAAMER) was installed at Rio Grande on Tierra del Fuego (53.8°S, 67.8°W) in May 2008 and has been operational for ∼24 months. This paper describes the motivations for the radar design and its placement at the southern tip of South America, its operating modes and capabilities, and observations of the mean winds, planetary waves, and tides during its first ∼20 months of operation. SAAMER was specifically designed to provide very high resolution of large-scale motions and hopefully enable direct measurements of the vertical momentum flux by gravity waves, which have only been possible previously with dual- or multiple-beam radars and lidars or in situ measurements. SAAMER was placed on Tierra del Fuego because it was a region devoid of similar measurements, the latitude was anticipated to provide high sensitivity to an expected large semidiurnal tide, and the region is now recognized to be a "hot spot" of small-scale gravity wave activity extending from the troposphere into the mesosphere and lower thermosphere, perhaps the most dynamically active location on Earth. SAAMER was also intended to permit simultaneous enhanced meteor studies, including "head echo" and "nonspecular" measurements, which were previously possible only with high-power large-aperture radars. Initial measurements have defined the mean circulation and structure, exhibited planetary waves at various periods, and revealed large semidiurnal tide amplitudes and variability, with maximum amplitudes at higher altitudes often exceeding 60 m s<SUP>-1</SUP> and amplitude modulations at periods from a few to ∼30 days.
publishDate 2010
dc.date.none.fl_str_mv 2010
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dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/01480227
info:eu-repo/semantics/altIdentifier/doi/10.1029/2010JD013850
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
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