ENSO-related moisture and temperature anomalies over South America derived from GPS radio occultation profiles

Autores
Llamedo Soria, Pablo Martin; Hierro, Rodrigo Federico; de la Torre, Alejandro; Alexander, Pedro Manfredo
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
El Niño Southern Oscillation- (ENSO) related anomaly patterns of monthly specific humidity (q), precipitable water content (PW) and temperature (T) over South America are analysed using the FORMOSAT-3/COSMIC mission data (August 2006–December 2013). The Global Positioning System radio occultation (GPS RO) technique provides high vertical resolution profiles of atmospheric properties (refractivity, density, temperature and water vapour pressure) with a global coverage under any weather condition. During the ENSO warm phase (or El Niño), positive PW anomalies are found over the equatorial Pacific Ocean, southeastern Brazil, Bolivia, Paraguay and northern Argentina. Negative anomalies are found in the northern part of South America, but covering a smaller area. During the ENSO cold phase (or La Niña), positive anomalies are found in the northern part of the continent whereas negative anomalies are found over the Amazon Basin region. A Morlet continuous wavelet transform analysis is applied to deseasonalized PW anomaly time series. Over the areas showing PW anomalies related to ENSO, main modes of oscillation between 35 and 38 months are found, similar to the main oscillation mode of the Oceanic Niño index. Consistent with previous studies, PW anomalies in almost all these areas show a general behaviour towards opposite signals during the opposite ENSO phases. q patterns show a linear (in phase with Oceanic Niño Index) response to ENSO along the equator below 8 km height. The Andes mountains separate positive (west) from negative (east) anomalies during El Niño (EN) events (reversing during LN). The higher q positive anomalies are found over the equatorial Pacific Ocean and over 60°–50°W, 35°–20°S during EN months. T patterns show positive anomalies in the whole tropical troposphere during EN months, with higher values over the equatorial Pacific, west of the Andes between 7 and 15 km height.
Fil: Llamedo Soria, Pablo Martin. Universidad Austral. Facultad de Ingeniería. Departamento de Ciencias Básicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Hierro, Rodrigo Federico. Universidad Austral. Facultad de Ingeniería. Departamento de Ciencias Básicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: de la Torre, Alejandro. Universidad Austral. Facultad de Ingeniería. Departamento de Ciencias Básicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Alexander, Pedro Manfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Materia
Enso
Formosat-3/Cosmic
Precipitable Water
South America
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/72854
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/72854
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling ENSO-related moisture and temperature anomalies over South America derived from GPS radio occultation profilesLlamedo Soria, Pablo MartinHierro, Rodrigo Federicode la Torre, AlejandroAlexander, Pedro ManfredoEnsoFormosat-3/CosmicPrecipitable WaterSouth Americahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1El Niño Southern Oscillation- (ENSO) related anomaly patterns of monthly specific humidity (q), precipitable water content (PW) and temperature (T) over South America are analysed using the FORMOSAT-3/COSMIC mission data (August 2006–December 2013). The Global Positioning System radio occultation (GPS RO) technique provides high vertical resolution profiles of atmospheric properties (refractivity, density, temperature and water vapour pressure) with a global coverage under any weather condition. During the ENSO warm phase (or El Niño), positive PW anomalies are found over the equatorial Pacific Ocean, southeastern Brazil, Bolivia, Paraguay and northern Argentina. Negative anomalies are found in the northern part of South America, but covering a smaller area. During the ENSO cold phase (or La Niña), positive anomalies are found in the northern part of the continent whereas negative anomalies are found over the Amazon Basin region. A Morlet continuous wavelet transform analysis is applied to deseasonalized PW anomaly time series. Over the areas showing PW anomalies related to ENSO, main modes of oscillation between 35 and 38 months are found, similar to the main oscillation mode of the Oceanic Niño index. Consistent with previous studies, PW anomalies in almost all these areas show a general behaviour towards opposite signals during the opposite ENSO phases. q patterns show a linear (in phase with Oceanic Niño Index) response to ENSO along the equator below 8 km height. The Andes mountains separate positive (west) from negative (east) anomalies during El Niño (EN) events (reversing during LN). The higher q positive anomalies are found over the equatorial Pacific Ocean and over 60°–50°W, 35°–20°S during EN months. T patterns show positive anomalies in the whole tropical troposphere during EN months, with higher values over the equatorial Pacific, west of the Andes between 7 and 15 km height.Fil: Llamedo Soria, Pablo Martin. Universidad Austral. Facultad de Ingeniería. Departamento de Ciencias Básicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Hierro, Rodrigo Federico. Universidad Austral. Facultad de Ingeniería. Departamento de Ciencias Básicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: de la Torre, Alejandro. Universidad Austral. Facultad de Ingeniería. Departamento de Ciencias Básicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Alexander, Pedro Manfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaJohn Wiley & Sons Ltd2017-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/72854Llamedo Soria, Pablo Martin; Hierro, Rodrigo Federico; de la Torre, Alejandro; Alexander, Pedro Manfredo; ENSO-related moisture and temperature anomalies over South America derived from GPS radio occultation profiles; John Wiley & Sons Ltd; International Journal of Climatology; 37; 1; 1-2017; 268-2750899-8418CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1002/joc.4702info:eu-repo/semantics/altIdentifier/url/https://rmets.onlinelibrary.wiley.com/doi/abs/10.1002/joc.4702info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:02:22Zoai:ri.conicet.gov.ar:11336/72854instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:02:22.939CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv ENSO-related moisture and temperature anomalies over South America derived from GPS radio occultation profiles
title ENSO-related moisture and temperature anomalies over South America derived from GPS radio occultation profiles
spellingShingle ENSO-related moisture and temperature anomalies over South America derived from GPS radio occultation profiles
Llamedo Soria, Pablo Martin
Enso
Formosat-3/Cosmic
Precipitable Water
South America
title_short ENSO-related moisture and temperature anomalies over South America derived from GPS radio occultation profiles
title_full ENSO-related moisture and temperature anomalies over South America derived from GPS radio occultation profiles
title_fullStr ENSO-related moisture and temperature anomalies over South America derived from GPS radio occultation profiles
title_full_unstemmed ENSO-related moisture and temperature anomalies over South America derived from GPS radio occultation profiles
title_sort ENSO-related moisture and temperature anomalies over South America derived from GPS radio occultation profiles
dc.creator.none.fl_str_mv Llamedo Soria, Pablo Martin
Hierro, Rodrigo Federico
de la Torre, Alejandro
Alexander, Pedro Manfredo
author Llamedo Soria, Pablo Martin
author_facet Llamedo Soria, Pablo Martin
Hierro, Rodrigo Federico
de la Torre, Alejandro
Alexander, Pedro Manfredo
author_role author
author2 Hierro, Rodrigo Federico
de la Torre, Alejandro
Alexander, Pedro Manfredo
author2_role author
author
author
dc.subject.none.fl_str_mv Enso
Formosat-3/Cosmic
Precipitable Water
South America
topic Enso
Formosat-3/Cosmic
Precipitable Water
South America
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv El Niño Southern Oscillation- (ENSO) related anomaly patterns of monthly specific humidity (q), precipitable water content (PW) and temperature (T) over South America are analysed using the FORMOSAT-3/COSMIC mission data (August 2006–December 2013). The Global Positioning System radio occultation (GPS RO) technique provides high vertical resolution profiles of atmospheric properties (refractivity, density, temperature and water vapour pressure) with a global coverage under any weather condition. During the ENSO warm phase (or El Niño), positive PW anomalies are found over the equatorial Pacific Ocean, southeastern Brazil, Bolivia, Paraguay and northern Argentina. Negative anomalies are found in the northern part of South America, but covering a smaller area. During the ENSO cold phase (or La Niña), positive anomalies are found in the northern part of the continent whereas negative anomalies are found over the Amazon Basin region. A Morlet continuous wavelet transform analysis is applied to deseasonalized PW anomaly time series. Over the areas showing PW anomalies related to ENSO, main modes of oscillation between 35 and 38 months are found, similar to the main oscillation mode of the Oceanic Niño index. Consistent with previous studies, PW anomalies in almost all these areas show a general behaviour towards opposite signals during the opposite ENSO phases. q patterns show a linear (in phase with Oceanic Niño Index) response to ENSO along the equator below 8 km height. The Andes mountains separate positive (west) from negative (east) anomalies during El Niño (EN) events (reversing during LN). The higher q positive anomalies are found over the equatorial Pacific Ocean and over 60°–50°W, 35°–20°S during EN months. T patterns show positive anomalies in the whole tropical troposphere during EN months, with higher values over the equatorial Pacific, west of the Andes between 7 and 15 km height.
Fil: Llamedo Soria, Pablo Martin. Universidad Austral. Facultad de Ingeniería. Departamento de Ciencias Básicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Hierro, Rodrigo Federico. Universidad Austral. Facultad de Ingeniería. Departamento de Ciencias Básicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: de la Torre, Alejandro. Universidad Austral. Facultad de Ingeniería. Departamento de Ciencias Básicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Alexander, Pedro Manfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
description El Niño Southern Oscillation- (ENSO) related anomaly patterns of monthly specific humidity (q), precipitable water content (PW) and temperature (T) over South America are analysed using the FORMOSAT-3/COSMIC mission data (August 2006–December 2013). The Global Positioning System radio occultation (GPS RO) technique provides high vertical resolution profiles of atmospheric properties (refractivity, density, temperature and water vapour pressure) with a global coverage under any weather condition. During the ENSO warm phase (or El Niño), positive PW anomalies are found over the equatorial Pacific Ocean, southeastern Brazil, Bolivia, Paraguay and northern Argentina. Negative anomalies are found in the northern part of South America, but covering a smaller area. During the ENSO cold phase (or La Niña), positive anomalies are found in the northern part of the continent whereas negative anomalies are found over the Amazon Basin region. A Morlet continuous wavelet transform analysis is applied to deseasonalized PW anomaly time series. Over the areas showing PW anomalies related to ENSO, main modes of oscillation between 35 and 38 months are found, similar to the main oscillation mode of the Oceanic Niño index. Consistent with previous studies, PW anomalies in almost all these areas show a general behaviour towards opposite signals during the opposite ENSO phases. q patterns show a linear (in phase with Oceanic Niño Index) response to ENSO along the equator below 8 km height. The Andes mountains separate positive (west) from negative (east) anomalies during El Niño (EN) events (reversing during LN). The higher q positive anomalies are found over the equatorial Pacific Ocean and over 60°–50°W, 35°–20°S during EN months. T patterns show positive anomalies in the whole tropical troposphere during EN months, with higher values over the equatorial Pacific, west of the Andes between 7 and 15 km height.
publishDate 2017
dc.date.none.fl_str_mv 2017-01
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 http://hdl.handle.net/11336/72854
Llamedo Soria, Pablo Martin; Hierro, Rodrigo Federico; de la Torre, Alejandro; Alexander, Pedro Manfredo; ENSO-related moisture and temperature anomalies over South America derived from GPS radio occultation profiles; John Wiley & Sons Ltd; International Journal of Climatology; 37; 1; 1-2017; 268-275
0899-8418
CONICET Digital
CONICET
url http://hdl.handle.net/11336/72854
identifier_str_mv Llamedo Soria, Pablo Martin; Hierro, Rodrigo Federico; de la Torre, Alejandro; Alexander, Pedro Manfredo; ENSO-related moisture and temperature anomalies over South America derived from GPS radio occultation profiles; John Wiley & Sons Ltd; International Journal of Climatology; 37; 1; 1-2017; 268-275
0899-8418
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1002/joc.4702
info:eu-repo/semantics/altIdentifier/url/https://rmets.onlinelibrary.wiley.com/doi/abs/10.1002/joc.4702
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv John Wiley & Sons Ltd
publisher.none.fl_str_mv John Wiley & Sons Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.993085

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