Variations of foF2 and GPS total electron content over the Antarctic sector

Autores
Mosert, M.; McKinnell, L. A.; Gende, Mauricio; Brunini, Claudio Antonio; Araujo, J.; Ezquer, R. G.; Cabrera, M.
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This paper presents a preliminary analysis of the variations of the critical frequency of the F2 region (foF2) and the total electron content (TEC) derived from Global Positioning System (GPS) data. Hourly foF2 values were scaled from ionograms recorded at San Martin (68.1°S, 293.0°E) and the TEC values were derived from GPS observations at O'Higgins (63.3°S, 302.5 °E). The database includes measurements obtained under different seasonal and solar activity conditions. The study shows that the daily peak of foF2 occurs around local noon in winter and fall, and in spring a secondary peak is observed around midnight. In summer (January) foF2 reaches its minimum value around the noon sector while the maximum in the diurnal variation of foF2 is located in a time sector close to midnight. This behaviour is observed at low and high solar activity. The semiannual anomaly appears around noon at high and low solar activity and the winter anomaly is not observed. The effect of the solar activity is generally observed in every season. The analysis of the GPS TEC measurements in the same region indicates that the diurnal, seasonal and solar activity variations are similar to those observed in the foF2 values. An analysis of the performance of the IRI model to predict foF2 is also shown using the two IRI options (URSI and CCIR). The comparisons between the experimental values and the IRI predictions show some discrepancies.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Ciencias Astronómicas
GPS TEC
High latitude
Ionosphere
IRI
foF2
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/83679
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/83679
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Variations of foF2 and GPS total electron content over the Antarctic sectorMosert, M.McKinnell, L. A.Gende, MauricioBrunini, Claudio AntonioAraujo, J.Ezquer, R. G.Cabrera, M.Ciencias AstronómicasGPS TECHigh latitudeIonosphereIRIfoF2This paper presents a preliminary analysis of the variations of the critical frequency of the F<SUB>2</SUB> region (f<SUB>o</SUB>F<SUB>2</SUB>) and the total electron content (TEC) derived from Global Positioning System (GPS) data. Hourly f<SUB>o</SUB>F<SUB>2</SUB> values were scaled from ionograms recorded at San Martin (68.1°S, 293.0°E) and the TEC values were derived from GPS observations at O'Higgins (63.3°S, 302.5 °E). The database includes measurements obtained under different seasonal and solar activity conditions. The study shows that the daily peak of f<SUB>o</SUB>F<SUB>2</SUB> occurs around local noon in winter and fall, and in spring a secondary peak is observed around midnight. In summer (January) f<SUB>o</SUB>F<SUB>2</SUB> reaches its minimum value around the noon sector while the maximum in the diurnal variation of f<SUB>o</SUB>F<SUB>2</SUB> is located in a time sector close to midnight. This behaviour is observed at low and high solar activity. The semiannual anomaly appears around noon at high and low solar activity and the winter anomaly is not observed. The effect of the solar activity is generally observed in every season. The analysis of the GPS TEC measurements in the same region indicates that the diurnal, seasonal and solar activity variations are similar to those observed in the f<SUB>o</SUB>F<SUB>2</SUB> values. An analysis of the performance of the IRI model to predict f<SUB>o</SUB>F<SUB>2</SUB> is also shown using the two IRI options (URSI and CCIR). The comparisons between the experimental values and the IRI predictions show some discrepancies.Facultad de Ciencias Astronómicas y Geofísicas2011info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf327-333http://sedici.unlp.edu.ar/handle/10915/83679enginfo:eu-repo/semantics/altIdentifier/issn/1343-8832info:eu-repo/semantics/altIdentifier/doi/10.5047/eps.2011.01.006info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:15:55Zoai:sedici.unlp.edu.ar:10915/83679Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:15:55.884SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Variations of foF2 and GPS total electron content over the Antarctic sector
title Variations of foF2 and GPS total electron content over the Antarctic sector
spellingShingle Variations of foF2 and GPS total electron content over the Antarctic sector
Mosert, M.
Ciencias Astronómicas
GPS TEC
High latitude
Ionosphere
IRI
foF2
title_short Variations of foF2 and GPS total electron content over the Antarctic sector
title_full Variations of foF2 and GPS total electron content over the Antarctic sector
title_fullStr Variations of foF2 and GPS total electron content over the Antarctic sector
title_full_unstemmed Variations of foF2 and GPS total electron content over the Antarctic sector
title_sort Variations of foF2 and GPS total electron content over the Antarctic sector
dc.creator.none.fl_str_mv Mosert, M.
McKinnell, L. A.
Gende, Mauricio
Brunini, Claudio Antonio
Araujo, J.
Ezquer, R. G.
Cabrera, M.
author Mosert, M.
author_facet Mosert, M.
McKinnell, L. A.
Gende, Mauricio
Brunini, Claudio Antonio
Araujo, J.
Ezquer, R. G.
Cabrera, M.
author_role author
author2 McKinnell, L. A.
Gende, Mauricio
Brunini, Claudio Antonio
Araujo, J.
Ezquer, R. G.
Cabrera, M.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
GPS TEC
High latitude
Ionosphere
IRI
foF2
topic Ciencias Astronómicas
GPS TEC
High latitude
Ionosphere
IRI
foF2
dc.description.none.fl_txt_mv This paper presents a preliminary analysis of the variations of the critical frequency of the F<SUB>2</SUB> region (f<SUB>o</SUB>F<SUB>2</SUB>) and the total electron content (TEC) derived from Global Positioning System (GPS) data. Hourly f<SUB>o</SUB>F<SUB>2</SUB> values were scaled from ionograms recorded at San Martin (68.1°S, 293.0°E) and the TEC values were derived from GPS observations at O'Higgins (63.3°S, 302.5 °E). The database includes measurements obtained under different seasonal and solar activity conditions. The study shows that the daily peak of f<SUB>o</SUB>F<SUB>2</SUB> occurs around local noon in winter and fall, and in spring a secondary peak is observed around midnight. In summer (January) f<SUB>o</SUB>F<SUB>2</SUB> reaches its minimum value around the noon sector while the maximum in the diurnal variation of f<SUB>o</SUB>F<SUB>2</SUB> is located in a time sector close to midnight. This behaviour is observed at low and high solar activity. The semiannual anomaly appears around noon at high and low solar activity and the winter anomaly is not observed. The effect of the solar activity is generally observed in every season. The analysis of the GPS TEC measurements in the same region indicates that the diurnal, seasonal and solar activity variations are similar to those observed in the f<SUB>o</SUB>F<SUB>2</SUB> values. An analysis of the performance of the IRI model to predict f<SUB>o</SUB>F<SUB>2</SUB> is also shown using the two IRI options (URSI and CCIR). The comparisons between the experimental values and the IRI predictions show some discrepancies.
Facultad de Ciencias Astronómicas y Geofísicas
description This paper presents a preliminary analysis of the variations of the critical frequency of the F<SUB>2</SUB> region (f<SUB>o</SUB>F<SUB>2</SUB>) and the total electron content (TEC) derived from Global Positioning System (GPS) data. Hourly f<SUB>o</SUB>F<SUB>2</SUB> values were scaled from ionograms recorded at San Martin (68.1°S, 293.0°E) and the TEC values were derived from GPS observations at O'Higgins (63.3°S, 302.5 °E). The database includes measurements obtained under different seasonal and solar activity conditions. The study shows that the daily peak of f<SUB>o</SUB>F<SUB>2</SUB> occurs around local noon in winter and fall, and in spring a secondary peak is observed around midnight. In summer (January) f<SUB>o</SUB>F<SUB>2</SUB> reaches its minimum value around the noon sector while the maximum in the diurnal variation of f<SUB>o</SUB>F<SUB>2</SUB> is located in a time sector close to midnight. This behaviour is observed at low and high solar activity. The semiannual anomaly appears around noon at high and low solar activity and the winter anomaly is not observed. The effect of the solar activity is generally observed in every season. The analysis of the GPS TEC measurements in the same region indicates that the diurnal, seasonal and solar activity variations are similar to those observed in the f<SUB>o</SUB>F<SUB>2</SUB> values. An analysis of the performance of the IRI model to predict f<SUB>o</SUB>F<SUB>2</SUB> is also shown using the two IRI options (URSI and CCIR). The comparisons between the experimental values and the IRI predictions show some discrepancies.
publishDate 2011
dc.date.none.fl_str_mv 2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/83679
url http://sedici.unlp.edu.ar/handle/10915/83679
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1343-8832
info:eu-repo/semantics/altIdentifier/doi/10.5047/eps.2011.01.006
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
327-333
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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