Climatology of ionospheric amplitude scintillation on GNSS signals at south American sector during solar cycle 24

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dc.contributor.authorMacho, Eduardo Perez
dc.contributor.authorCorreia, Emília
dc.contributor.authorSpogli, Luca
dc.contributor.authorMuella, Marcio Tadeu de Assis Honorato
dc.date.accessioned2025-03-14T15:08:06Z
dc.date.available2025-03-14T15:08:06Z
dc.date.issued22022
dc.description.abstractScintillations are caused by ionospheric irregularities and can affect the propagation of trans-ionospheric radio signals. One way to understand and predict the impact of such irregularities on Global Navigation Satellite System (GNSS) signals is through the spatial/temporal characterization of the scintillation’s climatology during different phases of a solar cycle covering different latitudes and longitudes. This characterization is performed using amplitude scintillation index S4, during the full solar cycle 24, in the South American (SA) sector. The investigation considers the diurnal, daily, and seasonal variation of S4 index for climatological purpose, and the goal of this study is to investigate the scintillations covering a large spatial scale during the full solar cycle 24. The characterization shows a latitudinal asymmetry, whereas at the south, the scintillations were more frequent and their peak was more distant from the magnetic equator, which can be attributed by the South Atlantic Magnetic Anomaly (SAMA), and/or by the transequatorial meridional neutral winds. It also shows a longitudinal asymmetry, where the scintillations at the eastern sector occurred between November and February, while at the western sector, they occurred during the months of October, November, February and March, which can be attributed to the difference between the magnetic and geographic equators. The occurrence of scintillations during two distinct geomagnetic storms with similar storm time in the SA sector is also presented.
dc.description.physical12 p.
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.mimetypePDF
dc.identifier.affiliationUniversidade Presbiteriana Mackenzie
dc.identifier.affiliationUniversidade do Vale do Paraíba
dc.identifier.affiliationInstituto Nacional de Pesquisas Espaciais
dc.identifier.affiliationIstituto Nazionale di Geofisica e Vulcanologia
dc.identifier.affiliationSpacEarth Technolog
dc.identifier.bibliographicCitationMACHO, Eduardo Perez et al. Climatology of ionospheric amplitude scintillation on GNSS signals at south American sector during solar cycle 24. Journal of Atmospheric and Solar-Terrestrial Physics, v. 231, p. 1-12, 2022. Disponível em:
dc.identifier.doi10.1016/j.jastp.2022.105872
dc.identifier.urihttps://repositorio.univap.br/handle/123456789/699
dc.language.isoen_US
dc.publisherElsevier
dc.rights.holderJournal of Atmospheric and Solar-Terrestrial Physics
dc.subject.keywordScintillation
dc.subject.keywordIonosphere
dc.titleClimatology of ionospheric amplitude scintillation on GNSS signals at south American sector during solar cycle 24
dc.typeArtigos de Periódicos

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