Effects of the terdiurnal tide on the sporadic E (Es) layer development at low latitudes over the Brazilian sector

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dc.contributor.authorFontes, Pedro Alves
dc.contributor.authorMuella, Marcio Tadeu De Assis Honorato
dc.contributor.authorResende, Laysa Cristina Araújo
dc.contributor.authorAndrioli, Vânia Fátima
dc.contributor.authorFagundes, Paulo Roberto
dc.contributor.authorPillat, Valdir Gil
dc.contributor.authorBatista, Paulo Prado
dc.contributor.authorCarrasco, Alexander Jose
dc.date.accessioned2025-02-13T17:13:49Z
dc.date.available2025-02-13T17:13:49Z
dc.date.issued22023
dc.description.abstractSporadic E (Es) layers are patches of high ionization observed at around 100–140 km height in the E region. Their formation at low latitudes is primarily associated with the diurnal and semidiurnal components of the tidal winds via the ion convergence driven by the wind shear mechanism. However, recent studies have shown the influence of other tidal modes, such as the terdiurnal tide. Therefore, this work investigates the effect of terdiurnal tide-like oscillations on the occurrence and formation of the Es layers observed over Palmas (10.17∘ S, 48.33∘ W; dip lat. −7.31∘), a low-latitude station in Brazil. The analysis was conducted from December 2008 to November 2009 by using data collected from CADI (Canadian Advanced Digital Ionosonde). Additionally, the E Region Ionospheric Model (MIRE) was used to simulate the terdiurnal tidal component in the Es layer development. The results show modulations of 8 h periods on the occurrence rates of the Es layers during all seasonal periods. In general, we see three well-defined peaks in a superimposed summation of the Es layer types per hour in summer and autumn. We also observed that the amplitude modulation of the terdiurnal tide on the Es occurrence rates minimizes in December in comparison to the other months of the summer season. Other relevant aspects of the observations, with complementary statistical and periodogram analysis, are highlighted and discussed.
dc.description.physical16 p.
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.uriCAPES (no. 88887.372542/2019-00) FAPESP (2019/19225-9, 2019/09361-2, 2016/22634-0) CNPq (314261/2020-6)
dc.format.mimetypePDF
dc.identifier.affiliationUniversidade do Vale do Paraíba
dc.identifier.affiliationInstituto Federal do Maranhão
dc.identifier.affiliationInstituto Nacional de Pesquisas Espaciais
dc.identifier.bibliographicCitationFONTES, Pedro Alves et al. Effects of the terdiurnal tide on the sporadic E (Es) layer development at low latitudes over the Brazilian sector, Ann. Geophys., v. 41, p. 209–224, 2023. Disponível em:
dc.identifier.doi10.5194/angeo-41-209-2023
dc.identifier.urihttps://repositorio.univap.br/handle/123456789/575
dc.language.isoen_US
dc.publisherEuropean Geosciences Union
dc.rights.holderPedro Alves Fontes
dc.subject.keywordTerdiurnal tide
dc.subject.keywordLow latitudes
dc.titleEffects of the terdiurnal tide on the sporadic E (Es) layer development at low latitudes over the Brazilian sector
dc.typeArtigos de Periódicos

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