Electron density extrapolation above F2 peak by the linear Vary-Chap model supporting new Global Navigation Satellite Systems-LEO occultation missions

The new radio-occultation (RO) instrument on board the future EUMETSAT Polar System-Second Generation (EPS-SG) satellites, flying at a height of 820 km, is primarily focusing on neutral atmospheric profiling. It will also provide an opportunity for RO ionospheric sounding, but only below impact heig...

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Autores: Hernández Pajares, Manuel|||0000-0002-9687-5850, García Fernández, Miquel|||0000-0003-4844-6004, Rius Carrasco, Antoni|||0000-0002-8776-0947, Notarpietro, Riccardo, von Engeln, Axel, Olivares Pulido, Germán|||0000-0002-9604-6753, Aragón Ángel, Maria Angeles, García Rigo, Alberto|||0000-0001-6226-4851
Formato: artículo
Fecha de publicación:2017
País:España
Recursos:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/114686
Acesso em linha:https://hdl.handle.net/2117/114686
https://dx.doi.org/10.1002/2017JA023876
Access Level:acceso abierto
Palavra-chave:Geophysics
Ionosphere
Global Positioning System
Ionospheric sounding
Radio-occultations
Geofísica
Ionosfera
Classificació AMS::86 Geophysics
Classificació AMS::85 Astronomy and astrophysics
Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències
Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica
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oai_identifier_str oai:upcommons.upc.edu:2117/114686
network_acronym_str ES
network_name_str España
repository_id_str
spelling Electron density extrapolation above F2 peak by the linear Vary-Chap model supporting new Global Navigation Satellite Systems-LEO occultation missionsHernández Pajares, Manuel|||0000-0002-9687-5850García Fernández, Miquel|||0000-0003-4844-6004Rius Carrasco, Antoni|||0000-0002-8776-0947Notarpietro, Riccardovon Engeln, AxelOlivares Pulido, Germán|||0000-0002-9604-6753Aragón Ángel, Maria AngelesGarcía Rigo, Alberto|||0000-0001-6226-4851GeophysicsIonosphereGlobal Positioning SystemIonospheric soundingRadio-occultationsGeofísicaIonosferaClassificació AMS::86 GeophysicsClassificació AMS::85 Astronomy and astrophysicsÀrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciènciesÀrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèricaThe new radio-occultation (RO) instrument on board the future EUMETSAT Polar System-Second Generation (EPS-SG) satellites, flying at a height of 820 km, is primarily focusing on neutral atmospheric profiling. It will also provide an opportunity for RO ionospheric sounding, but only below impact heights of 500 km, in order to guarantee a full data gathering of the neutral part. This will leave a gap of 320 km, which impedes the application of the direct inversion techniques to retrieve the electron density profile. To overcome this challenge, we have looked for new ways (accurate and simple) of extrapolating the electron density (also applicable to other low-Earth orbiting, LEO, missions like CHAMP): a new Vary-Chap Extrapolation Technique (VCET). VCET is based on the scale height behavior, linearly dependent on the altitude above hmF2. This allows extrapolating the electron density profile for impact heights above its peak height (this is the case for EPS-SG), up to the satellite orbital height. VCET has been assessed with more than 3700 complete electron density profiles obtained in four representative scenarios of the Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) in the United States and the Formosa Satellite Mission 3 (FORMOSAT-3) in Taiwan, in solar maximum and minimum conditions, and geomagnetically disturbed conditions, by applying an updated Improved Abel Transform Inversion technique to dual-frequency GPS measurements. It is shown that VCET performs much better than other classical Chapman models, with 60% of occultations showing relative extrapolation errors below 20%, in contrast with conventional Chapman model extrapolation approaches with 10% or less of the profiles with relative error below 20%.Peer Reviewed20172017-08-0120182018-03-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/114686https://dx.doi.org/10.1002/2017JA023876reponame: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:2117/1146862026-05-27T15:37:01Z
dc.title.none.fl_str_mv Electron density extrapolation above F2 peak by the linear Vary-Chap model supporting new Global Navigation Satellite Systems-LEO occultation missions
title Electron density extrapolation above F2 peak by the linear Vary-Chap model supporting new Global Navigation Satellite Systems-LEO occultation missions
spellingShingle Electron density extrapolation above F2 peak by the linear Vary-Chap model supporting new Global Navigation Satellite Systems-LEO occultation missions
Hernández Pajares, Manuel|||0000-0002-9687-5850
Geophysics
Ionosphere
Global Positioning System
Ionospheric sounding
Radio-occultations
Geofísica
Ionosfera
Classificació AMS::86 Geophysics
Classificació AMS::85 Astronomy and astrophysics
Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències
Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica
title_short Electron density extrapolation above F2 peak by the linear Vary-Chap model supporting new Global Navigation Satellite Systems-LEO occultation missions
title_full Electron density extrapolation above F2 peak by the linear Vary-Chap model supporting new Global Navigation Satellite Systems-LEO occultation missions
title_fullStr Electron density extrapolation above F2 peak by the linear Vary-Chap model supporting new Global Navigation Satellite Systems-LEO occultation missions
title_full_unstemmed Electron density extrapolation above F2 peak by the linear Vary-Chap model supporting new Global Navigation Satellite Systems-LEO occultation missions
title_sort Electron density extrapolation above F2 peak by the linear Vary-Chap model supporting new Global Navigation Satellite Systems-LEO occultation missions
dc.creator.none.fl_str_mv Hernández Pajares, Manuel|||0000-0002-9687-5850
García Fernández, Miquel|||0000-0003-4844-6004
Rius Carrasco, Antoni|||0000-0002-8776-0947
Notarpietro, Riccardo
von Engeln, Axel
Olivares Pulido, Germán|||0000-0002-9604-6753
Aragón Ángel, Maria Angeles
García Rigo, Alberto|||0000-0001-6226-4851
author Hernández Pajares, Manuel|||0000-0002-9687-5850
author_facet Hernández Pajares, Manuel|||0000-0002-9687-5850
García Fernández, Miquel|||0000-0003-4844-6004
Rius Carrasco, Antoni|||0000-0002-8776-0947
Notarpietro, Riccardo
von Engeln, Axel
Olivares Pulido, Germán|||0000-0002-9604-6753
Aragón Ángel, Maria Angeles
García Rigo, Alberto|||0000-0001-6226-4851
author_role author
author2 García Fernández, Miquel|||0000-0003-4844-6004
Rius Carrasco, Antoni|||0000-0002-8776-0947
Notarpietro, Riccardo
von Engeln, Axel
Olivares Pulido, Germán|||0000-0002-9604-6753
Aragón Ángel, Maria Angeles
García Rigo, Alberto|||0000-0001-6226-4851
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Geophysics
Ionosphere
Global Positioning System
Ionospheric sounding
Radio-occultations
Geofísica
Ionosfera
Classificació AMS::86 Geophysics
Classificació AMS::85 Astronomy and astrophysics
Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències
Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica
topic Geophysics
Ionosphere
Global Positioning System
Ionospheric sounding
Radio-occultations
Geofísica
Ionosfera
Classificació AMS::86 Geophysics
Classificació AMS::85 Astronomy and astrophysics
Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències
Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica
description The new radio-occultation (RO) instrument on board the future EUMETSAT Polar System-Second Generation (EPS-SG) satellites, flying at a height of 820 km, is primarily focusing on neutral atmospheric profiling. It will also provide an opportunity for RO ionospheric sounding, but only below impact heights of 500 km, in order to guarantee a full data gathering of the neutral part. This will leave a gap of 320 km, which impedes the application of the direct inversion techniques to retrieve the electron density profile. To overcome this challenge, we have looked for new ways (accurate and simple) of extrapolating the electron density (also applicable to other low-Earth orbiting, LEO, missions like CHAMP): a new Vary-Chap Extrapolation Technique (VCET). VCET is based on the scale height behavior, linearly dependent on the altitude above hmF2. This allows extrapolating the electron density profile for impact heights above its peak height (this is the case for EPS-SG), up to the satellite orbital height. VCET has been assessed with more than 3700 complete electron density profiles obtained in four representative scenarios of the Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) in the United States and the Formosa Satellite Mission 3 (FORMOSAT-3) in Taiwan, in solar maximum and minimum conditions, and geomagnetically disturbed conditions, by applying an updated Improved Abel Transform Inversion technique to dual-frequency GPS measurements. It is shown that VCET performs much better than other classical Chapman models, with 60% of occultations showing relative extrapolation errors below 20%, in contrast with conventional Chapman model extrapolation approaches with 10% or less of the profiles with relative error below 20%.
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-08-01
2018
2018-03-01
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/2117/114686
https://dx.doi.org/10.1002/2017JA023876
url https://hdl.handle.net/2117/114686
https://dx.doi.org/10.1002/2017JA023876
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.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 15.300719

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