Assessment of global ionospheric maps performance by means of ionosonde data

This work presents a new method for assessing global ionospheric maps (GIM) using ionosonde data. The method is based on the critical frequency at the F2 layer directly measured by ionosondes to validate VTEC (vertical total electron content) values from GIMs. The analysis considered four different...

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Autores: Jerez, Gabriel Olivera, Hernández Pajares, Manuel|||0000-0002-9687-5850, Prol, Fabricio dos Santos, Alves, Daniele Barroca Marra, Monico, João Francisco Galera|||0000-0003-4101-9261
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/340806
Acceso en línea:https://hdl.handle.net/2117/340806
https://dx.doi.org/10.3390/rs12203452
Access Level:acceso abierto
Palabra clave:Astronomy and astrophysics
ionosphere
global ionospheric maps
ionosonde
equatorial region
Astrofísica
Classificació AMS::85 Astronomy and astrophysics
Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències
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repository_id_str
spelling Assessment of global ionospheric maps performance by means of ionosonde dataJerez, Gabriel OliveraHernández Pajares, Manuel|||0000-0002-9687-5850Prol, Fabricio dos SantosAlves, Daniele Barroca MarraMonico, João Francisco Galera|||0000-0003-4101-9261Astronomy and astrophysicsionosphereglobal ionospheric mapsionosondeequatorial regionAstrofísicaClassificació AMS::85 Astronomy and astrophysicsÀrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciènciesThis work presents a new method for assessing global ionospheric maps (GIM) using ionosonde data. The method is based on the critical frequency at the F2 layer directly measured by ionosondes to validate VTEC (vertical total electron content) values from GIMs. The analysis considered four different approaches to using foF2. The study was performed over one of the most challenging scenarios, the Brazilian region, considering four ionosondes (combined in six pairs) and thirteen GIM products available at CDDIS (Crustal Dynamics Data Information System). Analysis was conducted using daily, weekly, one year (2015), and four years (2014–2017) of data. Additional information from the ionosphere was estimated to complement the daily analysis, such as slab thickness and shape function peak. Results indicated that slab thickness and shape function peak could be used as alternative indicators of periods and regions where this method could be applied. The weekly analysis indicated the squared frequency ratio with local time correction as the best approach of using foF2, between the ones evaluated. The analysis of one-year data (2015) was performed considering thirteen GIMs, where CODG and UQRG were the two GIMs that presented the best performance. The four-year time series (2014–2017) were analyzed considering these two products. Regional and temporal ionospheric influences could be noticed in the results, with expected larger errors during the solar cycle peak in 2014 and at locations with pairs of ionosondes with the larger distance apart. Therefore, we have confirmed the viability of the developed approach as an assessment method to analyze GIMs quality based on ionosonde data.We acknowledge INPE for providing the ionosonde data, the IGS IAACs, in particular, CODE, ESA, JPL, UPC, and WHU, for providing global ionospheric maps and the National Institute of Science and Technology for GNSS in Support of Air Navigation (INCT GNSS-NavAer), funded by CNPq (465648/2014-2), FAPESP (2017/50115-0), and CAPES (88887.137186/2017-00).Peer ReviewedMultidisciplinary Digital Publishing Institute (MDPI)20202020-10-2120212021-03-03journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/340806https://dx.doi.org/10.3390/rs12203452reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3408062026-05-27T15:37:01Z
dc.title.none.fl_str_mv Assessment of global ionospheric maps performance by means of ionosonde data
title Assessment of global ionospheric maps performance by means of ionosonde data
spellingShingle Assessment of global ionospheric maps performance by means of ionosonde data
Jerez, Gabriel Olivera
Astronomy and astrophysics
ionosphere
global ionospheric maps
ionosonde
equatorial region
Astrofísica
Classificació AMS::85 Astronomy and astrophysics
Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències
title_short Assessment of global ionospheric maps performance by means of ionosonde data
title_full Assessment of global ionospheric maps performance by means of ionosonde data
title_fullStr Assessment of global ionospheric maps performance by means of ionosonde data
title_full_unstemmed Assessment of global ionospheric maps performance by means of ionosonde data
title_sort Assessment of global ionospheric maps performance by means of ionosonde data
dc.creator.none.fl_str_mv Jerez, Gabriel Olivera
Hernández Pajares, Manuel|||0000-0002-9687-5850
Prol, Fabricio dos Santos
Alves, Daniele Barroca Marra
Monico, João Francisco Galera|||0000-0003-4101-9261
author Jerez, Gabriel Olivera
author_facet Jerez, Gabriel Olivera
Hernández Pajares, Manuel|||0000-0002-9687-5850
Prol, Fabricio dos Santos
Alves, Daniele Barroca Marra
Monico, João Francisco Galera|||0000-0003-4101-9261
author_role author
author2 Hernández Pajares, Manuel|||0000-0002-9687-5850
Prol, Fabricio dos Santos
Alves, Daniele Barroca Marra
Monico, João Francisco Galera|||0000-0003-4101-9261
author2_role author
author
author
author
dc.subject.none.fl_str_mv Astronomy and astrophysics
ionosphere
global ionospheric maps
ionosonde
equatorial region
Astrofísica
Classificació AMS::85 Astronomy and astrophysics
Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències
topic Astronomy and astrophysics
ionosphere
global ionospheric maps
ionosonde
equatorial region
Astrofísica
Classificació AMS::85 Astronomy and astrophysics
Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències
description This work presents a new method for assessing global ionospheric maps (GIM) using ionosonde data. The method is based on the critical frequency at the F2 layer directly measured by ionosondes to validate VTEC (vertical total electron content) values from GIMs. The analysis considered four different approaches to using foF2. The study was performed over one of the most challenging scenarios, the Brazilian region, considering four ionosondes (combined in six pairs) and thirteen GIM products available at CDDIS (Crustal Dynamics Data Information System). Analysis was conducted using daily, weekly, one year (2015), and four years (2014–2017) of data. Additional information from the ionosphere was estimated to complement the daily analysis, such as slab thickness and shape function peak. Results indicated that slab thickness and shape function peak could be used as alternative indicators of periods and regions where this method could be applied. The weekly analysis indicated the squared frequency ratio with local time correction as the best approach of using foF2, between the ones evaluated. The analysis of one-year data (2015) was performed considering thirteen GIMs, where CODG and UQRG were the two GIMs that presented the best performance. The four-year time series (2014–2017) were analyzed considering these two products. Regional and temporal ionospheric influences could be noticed in the results, with expected larger errors during the solar cycle peak in 2014 and at locations with pairs of ionosondes with the larger distance apart. Therefore, we have confirmed the viability of the developed approach as an assessment method to analyze GIMs quality based on ionosonde data.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-10-21
2021
2021-03-03
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/340806
https://dx.doi.org/10.3390/rs12203452
url https://hdl.handle.net/2117/340806
https://dx.doi.org/10.3390/rs12203452
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (MDPI)
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (MDPI)
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300724

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