Spread F occurrence and drift under the crest of the equatorial ionization anomaly from continuous Doppler sounding and FORMOSAT-3/COSMIC scintillation data

Autores
Chum, Jaroslav; Liu, Jann Yenq; Chen, Shih Ping; Cabrera, Miguel Angel; Laštovička, Jan; Baše, Jiří; Burešová, Dalia; Fišer, Jiří; Hruška, František; Ezquer, Rodolfo Gerardo
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A relatively new method based on measurements by multipoint continuous Doppler sounding is applied to study the occurrence rate, propagation velocities, and directions of spread F structures over Tucumán, Northern Argentina, and Taiwan, both of which were under the crest of the equatorial ionization anomaly in 2014. In addition, spread F is studied globally over the same time period from the S4 scintillation index measured onboard FORMOSAT-3/COSMIC (F3/C) satellite. It is shown that the continuous Doppler sounding gives results that are consistent with S4 data and with previous optical, global positioning system (GPS), and satellite measurements. Most of the spread F events were observed from September to March, i.e., during the local summer half of the year in Tucumán, whereas in Taiwan, the highest occurrence rate was observed around equinoxes. The occurrence rate in Tucumán was about four times higher than that in Taiwan. The propagation velocities and directions were estimated from the Doppler shift spectrograms. The spread structures related to spread F propagated roughly eastward at velocities from ~70 to ~200 m s-1 during nighttime hours. The mean observed horizontal velocity was 140 m s-1 over Tucumán and 107 m s-1 over Taiwan. The local times at which the highest velocities were observed roughly correspond to local times with highest values of scintillation index S4, at ~20 to 23 LT. In addition, a comparison of measured drift velocities with neutral wind velocities predicted by models is provided. The observed velocities usually exceeded the horizontal neutral wind velocities predicted by the HWM14 model for the locations and times of observations.
Fil: Chum, Jaroslav. Institute of Atmospheric Physics; República Checa
Fil: Liu, Jann Yenq. National Central University. Institute of Space Science; República de China
Fil: Chen, Shih Ping. National Central University. Institute of Space Science; República de China
Fil: Cabrera, Miguel Angel. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Electricidad, Electrónica y Computación. Laboratorio de Telecomunicaciones; Argentina
Fil: Laštovička, Jan. Institute of Atmospheric Physics; República Checa
Fil: Baše, Jiří. Institute of Atmospheric Physics; República Checa
Fil: Burešová, Dalia. Institute of Atmospheric Physics; República Checa
Fil: Fišer, Jiří. Institute of Atmospheric Physics; República Checa
Fil: Hruška, František. Institute of Atmospheric Physics; República Checa
Fil: Ezquer, Rodolfo Gerardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Universidad Tecnológica Nacional; Argentina
Materia
DOPPLER SOUNDING
EQUATORIAL IONIZATION ANOMALY
EQUATORIAL SPREAD F
GPS SIGNAL OCCULTATION AND SCINTILLATION
IONOSPHERIC IRREGULARITIES
PLASMA BUBBLES
REMOTE SENSING
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/58088
Acceder
id CONICETDig_6b4be9b777331346f4882b86321dfa00
oai_identifier_str oai:ri.conicet.gov.ar:11336/58088
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Spread F occurrence and drift under the crest of the equatorial ionization anomaly from continuous Doppler sounding and FORMOSAT-3/COSMIC scintillation dataChum, JaroslavLiu, Jann YenqChen, Shih PingCabrera, Miguel AngelLaštovička, JanBaše, JiříBurešová, DaliaFišer, JiříHruška, FrantišekEzquer, Rodolfo GerardoDOPPLER SOUNDINGEQUATORIAL IONIZATION ANOMALYEQUATORIAL SPREAD FGPS SIGNAL OCCULTATION AND SCINTILLATIONIONOSPHERIC IRREGULARITIESPLASMA BUBBLESREMOTE SENSINGhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1A relatively new method based on measurements by multipoint continuous Doppler sounding is applied to study the occurrence rate, propagation velocities, and directions of spread F structures over Tucumán, Northern Argentina, and Taiwan, both of which were under the crest of the equatorial ionization anomaly in 2014. In addition, spread F is studied globally over the same time period from the S4 scintillation index measured onboard FORMOSAT-3/COSMIC (F3/C) satellite. It is shown that the continuous Doppler sounding gives results that are consistent with S4 data and with previous optical, global positioning system (GPS), and satellite measurements. Most of the spread F events were observed from September to March, i.e., during the local summer half of the year in Tucumán, whereas in Taiwan, the highest occurrence rate was observed around equinoxes. The occurrence rate in Tucumán was about four times higher than that in Taiwan. The propagation velocities and directions were estimated from the Doppler shift spectrograms. The spread structures related to spread F propagated roughly eastward at velocities from ~70 to ~200 m s-1 during nighttime hours. The mean observed horizontal velocity was 140 m s-1 over Tucumán and 107 m s-1 over Taiwan. The local times at which the highest velocities were observed roughly correspond to local times with highest values of scintillation index S4, at ~20 to 23 LT. In addition, a comparison of measured drift velocities with neutral wind velocities predicted by models is provided. The observed velocities usually exceeded the horizontal neutral wind velocities predicted by the HWM14 model for the locations and times of observations.Fil: Chum, Jaroslav. Institute of Atmospheric Physics; República ChecaFil: Liu, Jann Yenq. National Central University. Institute of Space Science; República de ChinaFil: Chen, Shih Ping. National Central University. Institute of Space Science; República de ChinaFil: Cabrera, Miguel Angel. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Electricidad, Electrónica y Computación. Laboratorio de Telecomunicaciones; ArgentinaFil: Laštovička, Jan. Institute of Atmospheric Physics; República ChecaFil: Baše, Jiří. Institute of Atmospheric Physics; República ChecaFil: Burešová, Dalia. Institute of Atmospheric Physics; República ChecaFil: Fišer, Jiří. Institute of Atmospheric Physics; República ChecaFil: Hruška, František. Institute of Atmospheric Physics; República ChecaFil: Ezquer, Rodolfo Gerardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Universidad Tecnológica Nacional; ArgentinaSpringer2016-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/58088Chum, Jaroslav; Liu, Jann Yenq; Chen, Shih Ping; Cabrera, Miguel Angel; Laštovička, Jan; et al.; Spread F occurrence and drift under the crest of the equatorial ionization anomaly from continuous Doppler sounding and FORMOSAT-3/COSMIC scintillation data; Springer; Earth, Plants and Space; 68; 56; 4-2016; 1-181343-8832CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1186/s40623-016-0433-1info:eu-repo/semantics/altIdentifier/url/https://earth-planets-space.springeropen.com/articles/10.1186/s40623-016-0433-1info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:37:46Zoai:ri.conicet.gov.ar:11336/58088instacron: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:34982025-09-29 10:37:47.225CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Spread F occurrence and drift under the crest of the equatorial ionization anomaly from continuous Doppler sounding and FORMOSAT-3/COSMIC scintillation data
title Spread F occurrence and drift under the crest of the equatorial ionization anomaly from continuous Doppler sounding and FORMOSAT-3/COSMIC scintillation data
spellingShingle Spread F occurrence and drift under the crest of the equatorial ionization anomaly from continuous Doppler sounding and FORMOSAT-3/COSMIC scintillation data
Chum, Jaroslav
DOPPLER SOUNDING
EQUATORIAL IONIZATION ANOMALY
EQUATORIAL SPREAD F
GPS SIGNAL OCCULTATION AND SCINTILLATION
IONOSPHERIC IRREGULARITIES
PLASMA BUBBLES
REMOTE SENSING
title_short Spread F occurrence and drift under the crest of the equatorial ionization anomaly from continuous Doppler sounding and FORMOSAT-3/COSMIC scintillation data
title_full Spread F occurrence and drift under the crest of the equatorial ionization anomaly from continuous Doppler sounding and FORMOSAT-3/COSMIC scintillation data
title_fullStr Spread F occurrence and drift under the crest of the equatorial ionization anomaly from continuous Doppler sounding and FORMOSAT-3/COSMIC scintillation data
title_full_unstemmed Spread F occurrence and drift under the crest of the equatorial ionization anomaly from continuous Doppler sounding and FORMOSAT-3/COSMIC scintillation data
title_sort Spread F occurrence and drift under the crest of the equatorial ionization anomaly from continuous Doppler sounding and FORMOSAT-3/COSMIC scintillation data
dc.creator.none.fl_str_mv Chum, Jaroslav
Liu, Jann Yenq
Chen, Shih Ping
Cabrera, Miguel Angel
Laštovička, Jan
Baše, Jiří
Burešová, Dalia
Fišer, Jiří
Hruška, František
Ezquer, Rodolfo Gerardo
author Chum, Jaroslav
author_facet Chum, Jaroslav
Liu, Jann Yenq
Chen, Shih Ping
Cabrera, Miguel Angel
Laštovička, Jan
Baše, Jiří
Burešová, Dalia
Fišer, Jiří
Hruška, František
Ezquer, Rodolfo Gerardo
author_role author
author2 Liu, Jann Yenq
Chen, Shih Ping
Cabrera, Miguel Angel
Laštovička, Jan
Baše, Jiří
Burešová, Dalia
Fišer, Jiří
Hruška, František
Ezquer, Rodolfo Gerardo
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv DOPPLER SOUNDING
EQUATORIAL IONIZATION ANOMALY
EQUATORIAL SPREAD F
GPS SIGNAL OCCULTATION AND SCINTILLATION
IONOSPHERIC IRREGULARITIES
PLASMA BUBBLES
REMOTE SENSING
topic DOPPLER SOUNDING
EQUATORIAL IONIZATION ANOMALY
EQUATORIAL SPREAD F
GPS SIGNAL OCCULTATION AND SCINTILLATION
IONOSPHERIC IRREGULARITIES
PLASMA BUBBLES
REMOTE SENSING
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A relatively new method based on measurements by multipoint continuous Doppler sounding is applied to study the occurrence rate, propagation velocities, and directions of spread F structures over Tucumán, Northern Argentina, and Taiwan, both of which were under the crest of the equatorial ionization anomaly in 2014. In addition, spread F is studied globally over the same time period from the S4 scintillation index measured onboard FORMOSAT-3/COSMIC (F3/C) satellite. It is shown that the continuous Doppler sounding gives results that are consistent with S4 data and with previous optical, global positioning system (GPS), and satellite measurements. Most of the spread F events were observed from September to March, i.e., during the local summer half of the year in Tucumán, whereas in Taiwan, the highest occurrence rate was observed around equinoxes. The occurrence rate in Tucumán was about four times higher than that in Taiwan. The propagation velocities and directions were estimated from the Doppler shift spectrograms. The spread structures related to spread F propagated roughly eastward at velocities from ~70 to ~200 m s-1 during nighttime hours. The mean observed horizontal velocity was 140 m s-1 over Tucumán and 107 m s-1 over Taiwan. The local times at which the highest velocities were observed roughly correspond to local times with highest values of scintillation index S4, at ~20 to 23 LT. In addition, a comparison of measured drift velocities with neutral wind velocities predicted by models is provided. The observed velocities usually exceeded the horizontal neutral wind velocities predicted by the HWM14 model for the locations and times of observations.
Fil: Chum, Jaroslav. Institute of Atmospheric Physics; República Checa
Fil: Liu, Jann Yenq. National Central University. Institute of Space Science; República de China
Fil: Chen, Shih Ping. National Central University. Institute of Space Science; República de China
Fil: Cabrera, Miguel Angel. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnología. Departamento de Electricidad, Electrónica y Computación. Laboratorio de Telecomunicaciones; Argentina
Fil: Laštovička, Jan. Institute of Atmospheric Physics; República Checa
Fil: Baše, Jiří. Institute of Atmospheric Physics; República Checa
Fil: Burešová, Dalia. Institute of Atmospheric Physics; República Checa
Fil: Fišer, Jiří. Institute of Atmospheric Physics; República Checa
Fil: Hruška, František. Institute of Atmospheric Physics; República Checa
Fil: Ezquer, Rodolfo Gerardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina. Universidad Tecnológica Nacional; Argentina
description A relatively new method based on measurements by multipoint continuous Doppler sounding is applied to study the occurrence rate, propagation velocities, and directions of spread F structures over Tucumán, Northern Argentina, and Taiwan, both of which were under the crest of the equatorial ionization anomaly in 2014. In addition, spread F is studied globally over the same time period from the S4 scintillation index measured onboard FORMOSAT-3/COSMIC (F3/C) satellite. It is shown that the continuous Doppler sounding gives results that are consistent with S4 data and with previous optical, global positioning system (GPS), and satellite measurements. Most of the spread F events were observed from September to March, i.e., during the local summer half of the year in Tucumán, whereas in Taiwan, the highest occurrence rate was observed around equinoxes. The occurrence rate in Tucumán was about four times higher than that in Taiwan. The propagation velocities and directions were estimated from the Doppler shift spectrograms. The spread structures related to spread F propagated roughly eastward at velocities from ~70 to ~200 m s-1 during nighttime hours. The mean observed horizontal velocity was 140 m s-1 over Tucumán and 107 m s-1 over Taiwan. The local times at which the highest velocities were observed roughly correspond to local times with highest values of scintillation index S4, at ~20 to 23 LT. In addition, a comparison of measured drift velocities with neutral wind velocities predicted by models is provided. The observed velocities usually exceeded the horizontal neutral wind velocities predicted by the HWM14 model for the locations and times of observations.
publishDate 2016
dc.date.none.fl_str_mv 2016-04
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/11336/58088
Chum, Jaroslav; Liu, Jann Yenq; Chen, Shih Ping; Cabrera, Miguel Angel; Laštovička, Jan; et al.; Spread F occurrence and drift under the crest of the equatorial ionization anomaly from continuous Doppler sounding and FORMOSAT-3/COSMIC scintillation data; Springer; Earth, Plants and Space; 68; 56; 4-2016; 1-18
1343-8832
CONICET Digital
CONICET
url http://hdl.handle.net/11336/58088
identifier_str_mv Chum, Jaroslav; Liu, Jann Yenq; Chen, Shih Ping; Cabrera, Miguel Angel; Laštovička, Jan; et al.; Spread F occurrence and drift under the crest of the equatorial ionization anomaly from continuous Doppler sounding and FORMOSAT-3/COSMIC scintillation data; Springer; Earth, Plants and Space; 68; 56; 4-2016; 1-18
1343-8832
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1186/s40623-016-0433-1
info:eu-repo/semantics/altIdentifier/url/https://earth-planets-space.springeropen.com/articles/10.1186/s40623-016-0433-1
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
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 13.070432

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