Two-Way Assessment of Ionospheric Maps Performance Over the Brazilian Region: Global Versus Regional Products
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1029/2022SW003252 http://hdl.handle.net/11449/245585 |
Resumo: | Vertical total electron content (VTEC) has great importance in describing the ionosphere. VTEC values are commonly distributed in regular grids by means of so-called global ionospheric maps (GIMs) and regional ionospheric maps (RIMs). Although considerable research has been conducted to develop regional and global models, there is no clear understanding of the benefits of using RIMs over GIMs. Aiming to contribute to this discussion, our investigation presents a comparison between seven global and regional ionospheric maps considering two approaches: (a) ionosonde data-based assessment and (b) global navigation satellite systems (GNSS) positioning assessment. A challenging low latitude ionosphere scenario, the Brazilian region, was selected during a week with an active geomagnetic storm. The assessment results with ionosonde data have shown better performance of the RIM products named OTHR and OTRG. Among the global products, CODG and UQRG have shown the best performances. The worst results were obtained with the RIM named Instituto Nacional de Pesquisas Espaciais. The assessment with GNSS positioning led to larger and noisier errors close to the equatorial anomaly. Two of the analyzed RIMs presented expected large errors in stations at the edges of the coverage area. To overcome this issue, a hybrid product was proposed to extend the RIM covered region. The proposed hybrid product (OTRG) presented the best results in the GNSS positioning domain. |
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Two-Way Assessment of Ionospheric Maps Performance Over the Brazilian Region: Global Versus Regional Productsionosphereglobal ionospheric mapsregional ionospheric mapsionosondeGNSSequatorial regionVertical total electron content (VTEC) has great importance in describing the ionosphere. VTEC values are commonly distributed in regular grids by means of so-called global ionospheric maps (GIMs) and regional ionospheric maps (RIMs). Although considerable research has been conducted to develop regional and global models, there is no clear understanding of the benefits of using RIMs over GIMs. Aiming to contribute to this discussion, our investigation presents a comparison between seven global and regional ionospheric maps considering two approaches: (a) ionosonde data-based assessment and (b) global navigation satellite systems (GNSS) positioning assessment. A challenging low latitude ionosphere scenario, the Brazilian region, was selected during a week with an active geomagnetic storm. The assessment results with ionosonde data have shown better performance of the RIM products named OTHR and OTRG. Among the global products, CODG and UQRG have shown the best performances. The worst results were obtained with the RIM named Instituto Nacional de Pesquisas Espaciais. The assessment with GNSS positioning led to larger and noisier errors close to the equatorial anomaly. Two of the analyzed RIMs presented expected large errors in stations at the edges of the coverage area. To overcome this issue, a hybrid product was proposed to extend the RIM covered region. The proposed hybrid product (OTRG) presented the best results in the GNSS positioning domain.Coordena��o de Aperfei�oamento de Pessoal de N�vel Superior (CAPES)Funda��o de Amparo � Pesquisa do Estado de S�o Paulo (FAPESP)PITHIA NRF EU projectConselho Nacional de Desenvolvimento Cient�fico e Tecnol�gico (CNPq)Bundeswehr GeoInformation Centre (BGIC)German Space Situation Awareness Centre (GSSAC)Sao Paulo State Univ UNESP, Dept Cartog, Presidente Prudente, BrazilUniv Politecn Catalunya UPC, Dept Math, UPC IonSAT, UPC IEEC,Res Grp, Barcelona, SpainTech Univ Munich, Deutsch Geodat Forsch Inst, Munich, GermanyFinnish Geospatial Res Inst FGI, Natl Land Survey, Kyrkslatt, FinlandSao Paulo State Univ UNESP, Dept Cartog, Presidente Prudente, BrazilCAPES: 001FAPESP: 2021/05285-0PITHIA NRF EU project: 101007599CNPq: 465648/2014-2FAPESP: 2017/50115-0CAPES: 88887.137186/2017-00Amer Geophysical UnionUniversidade Estadual Paulista (UNESP)Univ Politecn Catalunya UPCTech Univ MunichFinnish Geospatial Res Inst FGIJerez, Gabriel O. [UNESP]Hernandez-Pajares, ManuelGoss, AndreasProl, Fabricio S.Alves, Daniele B. M. [UNESP]Monico, Joao F. G. [UNESP]Schmidt, Michael2023-07-29T11:59:12Z2023-07-29T11:59:12Z2023-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article14http://dx.doi.org/10.1029/2022SW003252Space Weather-the International Journal of Research and Applications. Washington: Amer Geophysical Union, v. 21, n. 2, 14 p., 2023.http://hdl.handle.net/11449/24558510.1029/2022SW003252WOS:000928695200001Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSpace Weather-the International Journal Of Research And Applicationsinfo:eu-repo/semantics/openAccess2024-06-18T15:01:52Zoai:repositorio.unesp.br:11449/245585Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:25:33.893153Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Two-Way Assessment of Ionospheric Maps Performance Over the Brazilian Region: Global Versus Regional Products |
title |
Two-Way Assessment of Ionospheric Maps Performance Over the Brazilian Region: Global Versus Regional Products |
spellingShingle |
Two-Way Assessment of Ionospheric Maps Performance Over the Brazilian Region: Global Versus Regional Products Jerez, Gabriel O. [UNESP] ionosphere global ionospheric maps regional ionospheric maps ionosonde GNSS equatorial region |
title_short |
Two-Way Assessment of Ionospheric Maps Performance Over the Brazilian Region: Global Versus Regional Products |
title_full |
Two-Way Assessment of Ionospheric Maps Performance Over the Brazilian Region: Global Versus Regional Products |
title_fullStr |
Two-Way Assessment of Ionospheric Maps Performance Over the Brazilian Region: Global Versus Regional Products |
title_full_unstemmed |
Two-Way Assessment of Ionospheric Maps Performance Over the Brazilian Region: Global Versus Regional Products |
title_sort |
Two-Way Assessment of Ionospheric Maps Performance Over the Brazilian Region: Global Versus Regional Products |
author |
Jerez, Gabriel O. [UNESP] |
author_facet |
Jerez, Gabriel O. [UNESP] Hernandez-Pajares, Manuel Goss, Andreas Prol, Fabricio S. Alves, Daniele B. M. [UNESP] Monico, Joao F. G. [UNESP] Schmidt, Michael |
author_role |
author |
author2 |
Hernandez-Pajares, Manuel Goss, Andreas Prol, Fabricio S. Alves, Daniele B. M. [UNESP] Monico, Joao F. G. [UNESP] Schmidt, Michael |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Univ Politecn Catalunya UPC Tech Univ Munich Finnish Geospatial Res Inst FGI |
dc.contributor.author.fl_str_mv |
Jerez, Gabriel O. [UNESP] Hernandez-Pajares, Manuel Goss, Andreas Prol, Fabricio S. Alves, Daniele B. M. [UNESP] Monico, Joao F. G. [UNESP] Schmidt, Michael |
dc.subject.por.fl_str_mv |
ionosphere global ionospheric maps regional ionospheric maps ionosonde GNSS equatorial region |
topic |
ionosphere global ionospheric maps regional ionospheric maps ionosonde GNSS equatorial region |
description |
Vertical total electron content (VTEC) has great importance in describing the ionosphere. VTEC values are commonly distributed in regular grids by means of so-called global ionospheric maps (GIMs) and regional ionospheric maps (RIMs). Although considerable research has been conducted to develop regional and global models, there is no clear understanding of the benefits of using RIMs over GIMs. Aiming to contribute to this discussion, our investigation presents a comparison between seven global and regional ionospheric maps considering two approaches: (a) ionosonde data-based assessment and (b) global navigation satellite systems (GNSS) positioning assessment. A challenging low latitude ionosphere scenario, the Brazilian region, was selected during a week with an active geomagnetic storm. The assessment results with ionosonde data have shown better performance of the RIM products named OTHR and OTRG. Among the global products, CODG and UQRG have shown the best performances. The worst results were obtained with the RIM named Instituto Nacional de Pesquisas Espaciais. The assessment with GNSS positioning led to larger and noisier errors close to the equatorial anomaly. Two of the analyzed RIMs presented expected large errors in stations at the edges of the coverage area. To overcome this issue, a hybrid product was proposed to extend the RIM covered region. The proposed hybrid product (OTRG) presented the best results in the GNSS positioning domain. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-29T11:59:12Z 2023-07-29T11:59:12Z 2023-02-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1029/2022SW003252 Space Weather-the International Journal of Research and Applications. Washington: Amer Geophysical Union, v. 21, n. 2, 14 p., 2023. http://hdl.handle.net/11449/245585 10.1029/2022SW003252 WOS:000928695200001 |
url |
http://dx.doi.org/10.1029/2022SW003252 http://hdl.handle.net/11449/245585 |
identifier_str_mv |
Space Weather-the International Journal of Research and Applications. Washington: Amer Geophysical Union, v. 21, n. 2, 14 p., 2023. 10.1029/2022SW003252 WOS:000928695200001 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Space Weather-the International Journal Of Research And Applications |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
14 |
dc.publisher.none.fl_str_mv |
Amer Geophysical Union |
publisher.none.fl_str_mv |
Amer Geophysical Union |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129318929301504 |