Comparison of different techniques for tropospheric wet delay retrieval over South America and surrounding oceans

Autores
Calori, Andrea Virginia; Colosimo, G.; Crespi, M.; Mackern Oberti, María Virginia
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Water vapour (WV) plays a fundamental role in several weather processes that deeply influence human activities. Satellite based radiometers, Ground based Global Navigation Satellite Systems (GNSS) and Numerical Weather Models (NWM) permit to obtain either measurements or estimates or forecasts of WV. This work presents a 2 years systematic comparison to address the agreement on the tropospheric wet delay retrieved by the three mentioned independent techniques over permanent stations belonging to SIRGAS (Sistema de Referencia para las Américas) GNSS network. SIRGAS tropospheric total delay estimations are compared with the official International GNSS Service (IGS) ones, with the measurements from the Jason-1 satellite radiometer (JMR) in terms of Zenith Wet Delays (ZWD) and, finally, with the ZWD computed from ERA Interim, the last reanalysis dataset from the European Center for Medium-Range Weather Forecasts (ECMWF). All the differences between the techniques, which were considered in order to yield a reliable comparison, are discussed. The statistical results of mean (μ), standard deviation (σ) and correlation (ρ), show that the highest agreement is reached between SIRGAS and IGS products (μ = –0.5mm, σ = 5.6mm, ρ = 0.98), whereas slightly worse values are obtained in the comparisons with the JMR measurements (μ = –7.4mm, σ = 15.4mm, ρ = 0.91), and the ERA Interim data (μ = –1.5mm, σ = 16.6mm, ρ = 0.91).
Fil: Calori, Andrea Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo. Facultad de Ingeniería; Argentina
Fil: Colosimo, G.. Università degli studi di Roma "La Sapienza"; Italia
Fil: Crespi, M.. Università degli studi di Roma "La Sapienza"; Italia
Fil: Mackern Oberti, María Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo. Facultad de Ingeniería; Argentina
Materia
Gnss
Jason-1 Radiometer
Numerical Weather Model
Sirgas
Zwd Retrieval
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:11336/59754
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/59754
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Comparison of different techniques for tropospheric wet delay retrieval over South America and surrounding oceansCalori, Andrea VirginiaColosimo, G.Crespi, M.Mackern Oberti, María VirginiaGnssJason-1 RadiometerNumerical Weather ModelSirgasZwd Retrievalhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Water vapour (WV) plays a fundamental role in several weather processes that deeply influence human activities. Satellite based radiometers, Ground based Global Navigation Satellite Systems (GNSS) and Numerical Weather Models (NWM) permit to obtain either measurements or estimates or forecasts of WV. This work presents a 2 years systematic comparison to address the agreement on the tropospheric wet delay retrieved by the three mentioned independent techniques over permanent stations belonging to SIRGAS (Sistema de Referencia para las Américas) GNSS network. SIRGAS tropospheric total delay estimations are compared with the official International GNSS Service (IGS) ones, with the measurements from the Jason-1 satellite radiometer (JMR) in terms of Zenith Wet Delays (ZWD) and, finally, with the ZWD computed from ERA Interim, the last reanalysis dataset from the European Center for Medium-Range Weather Forecasts (ECMWF). All the differences between the techniques, which were considered in order to yield a reliable comparison, are discussed. The statistical results of mean (μ), standard deviation (σ) and correlation (ρ), show that the highest agreement is reached between SIRGAS and IGS products (μ = –0.5mm, σ = 5.6mm, ρ = 0.98), whereas slightly worse values are obtained in the comparisons with the JMR measurements (μ = –7.4mm, σ = 15.4mm, ρ = 0.91), and the ERA Interim data (μ = –1.5mm, σ = 16.6mm, ρ = 0.91).Fil: Calori, Andrea Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo. Facultad de Ingeniería; ArgentinaFil: Colosimo, G.. Università degli studi di Roma "La Sapienza"; ItaliaFil: Crespi, M.. Università degli studi di Roma "La Sapienza"; ItaliaFil: Mackern Oberti, María Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo. Facultad de Ingeniería; ArgentinaSpringer Verlag2015-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/zipapplication/pdfhttp://hdl.handle.net/11336/59754Calori, Andrea Virginia; Colosimo, G.; Crespi, M.; Mackern Oberti, María Virginia; Comparison of different techniques for tropospheric wet delay retrieval over South America and surrounding oceans; Springer Verlag; International Association of Geodesy Symposia; 142; 6-2015; 147-1530939-9585CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1007/1345_2015_6info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/chapter/10.1007%2F1345_2015_6info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:30:08Zoai:ri.conicet.gov.ar:11336/59754instacron: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:34982025-10-22 11:30:08.559CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Comparison of different techniques for tropospheric wet delay retrieval over South America and surrounding oceans
title Comparison of different techniques for tropospheric wet delay retrieval over South America and surrounding oceans
spellingShingle Comparison of different techniques for tropospheric wet delay retrieval over South America and surrounding oceans
Calori, Andrea Virginia
Gnss
Jason-1 Radiometer
Numerical Weather Model
Sirgas
Zwd Retrieval
title_short Comparison of different techniques for tropospheric wet delay retrieval over South America and surrounding oceans
title_full Comparison of different techniques for tropospheric wet delay retrieval over South America and surrounding oceans
title_fullStr Comparison of different techniques for tropospheric wet delay retrieval over South America and surrounding oceans
title_full_unstemmed Comparison of different techniques for tropospheric wet delay retrieval over South America and surrounding oceans
title_sort Comparison of different techniques for tropospheric wet delay retrieval over South America and surrounding oceans
dc.creator.none.fl_str_mv Calori, Andrea Virginia
Colosimo, G.
Crespi, M.
Mackern Oberti, María Virginia
author Calori, Andrea Virginia
author_facet Calori, Andrea Virginia
Colosimo, G.
Crespi, M.
Mackern Oberti, María Virginia
author_role author
author2 Colosimo, G.
Crespi, M.
Mackern Oberti, María Virginia
author2_role author
author
author
dc.subject.none.fl_str_mv Gnss
Jason-1 Radiometer
Numerical Weather Model
Sirgas
Zwd Retrieval
topic Gnss
Jason-1 Radiometer
Numerical Weather Model
Sirgas
Zwd Retrieval
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Water vapour (WV) plays a fundamental role in several weather processes that deeply influence human activities. Satellite based radiometers, Ground based Global Navigation Satellite Systems (GNSS) and Numerical Weather Models (NWM) permit to obtain either measurements or estimates or forecasts of WV. This work presents a 2 years systematic comparison to address the agreement on the tropospheric wet delay retrieved by the three mentioned independent techniques over permanent stations belonging to SIRGAS (Sistema de Referencia para las Américas) GNSS network. SIRGAS tropospheric total delay estimations are compared with the official International GNSS Service (IGS) ones, with the measurements from the Jason-1 satellite radiometer (JMR) in terms of Zenith Wet Delays (ZWD) and, finally, with the ZWD computed from ERA Interim, the last reanalysis dataset from the European Center for Medium-Range Weather Forecasts (ECMWF). All the differences between the techniques, which were considered in order to yield a reliable comparison, are discussed. The statistical results of mean (μ), standard deviation (σ) and correlation (ρ), show that the highest agreement is reached between SIRGAS and IGS products (μ = –0.5mm, σ = 5.6mm, ρ = 0.98), whereas slightly worse values are obtained in the comparisons with the JMR measurements (μ = –7.4mm, σ = 15.4mm, ρ = 0.91), and the ERA Interim data (μ = –1.5mm, σ = 16.6mm, ρ = 0.91).
Fil: Calori, Andrea Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo. Facultad de Ingeniería; Argentina
Fil: Colosimo, G.. Università degli studi di Roma "La Sapienza"; Italia
Fil: Crespi, M.. Università degli studi di Roma "La Sapienza"; Italia
Fil: Mackern Oberti, María Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo. Facultad de Ingeniería; Argentina
description Water vapour (WV) plays a fundamental role in several weather processes that deeply influence human activities. Satellite based radiometers, Ground based Global Navigation Satellite Systems (GNSS) and Numerical Weather Models (NWM) permit to obtain either measurements or estimates or forecasts of WV. This work presents a 2 years systematic comparison to address the agreement on the tropospheric wet delay retrieved by the three mentioned independent techniques over permanent stations belonging to SIRGAS (Sistema de Referencia para las Américas) GNSS network. SIRGAS tropospheric total delay estimations are compared with the official International GNSS Service (IGS) ones, with the measurements from the Jason-1 satellite radiometer (JMR) in terms of Zenith Wet Delays (ZWD) and, finally, with the ZWD computed from ERA Interim, the last reanalysis dataset from the European Center for Medium-Range Weather Forecasts (ECMWF). All the differences between the techniques, which were considered in order to yield a reliable comparison, are discussed. The statistical results of mean (μ), standard deviation (σ) and correlation (ρ), show that the highest agreement is reached between SIRGAS and IGS products (μ = –0.5mm, σ = 5.6mm, ρ = 0.98), whereas slightly worse values are obtained in the comparisons with the JMR measurements (μ = –7.4mm, σ = 15.4mm, ρ = 0.91), and the ERA Interim data (μ = –1.5mm, σ = 16.6mm, ρ = 0.91).
publishDate 2015
dc.date.none.fl_str_mv 2015-06
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/11336/59754
Calori, Andrea Virginia; Colosimo, G.; Crespi, M.; Mackern Oberti, María Virginia; Comparison of different techniques for tropospheric wet delay retrieval over South America and surrounding oceans; Springer Verlag; International Association of Geodesy Symposia; 142; 6-2015; 147-153
0939-9585
CONICET Digital
CONICET
url http://hdl.handle.net/11336/59754
identifier_str_mv Calori, Andrea Virginia; Colosimo, G.; Crespi, M.; Mackern Oberti, María Virginia; Comparison of different techniques for tropospheric wet delay retrieval over South America and surrounding oceans; Springer Verlag; International Association of Geodesy Symposia; 142; 6-2015; 147-153
0939-9585
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1007/1345_2015_6
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/chapter/10.1007%2F1345_2015_6
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/zip
application/pdf
dc.publisher.none.fl_str_mv Springer Verlag
publisher.none.fl_str_mv Springer Verlag
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 12.982451

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