Study of sporadic E layers based on GPS radio occultation measurements and digisonde data over the Brazilian region

Autor(es)

Resende, Laysa C. A. ^[1] ; Arras, Christina ^[2] ; Batista, Inez S. ^[1] ; Denardini, Clezio M. ^[1] ; Bertollotto, Thaina O. ^[1] ; Moro, Juliano ^{[3, 4]}

Afiliação do(s) autor(es)

^[1] Natl Inst Space Res INPE, Sao Jose Dos Campos, SP - Brazil

^[2] German Res Ctr Geosci GFZ, Potsdam - Germany

^[3] Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing - Peoples R China

^[4] Southern Reg Space Res Ctr CRS COCRE INPE, Santa Maria, RS - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Annales Geophysicae; v. 36, n. 2, p. 587-593, APR 3 2018.
• Citações Web of Science: 4

Resumo

This work presents new results about sporadic E-layers (Es layers) using GPS (global positioning system) radio occultation (RO) measurements obtained from the FORMOSAT-3/COSMIC satellites and digisonde data. The RO profiles are used to study the Es layer occurrence as well as its intensity of the signal-to-noise ratio (SNR) of the 50 Hz GPS L1 signal. The methodology was applied to identify the Es layer on RO measurements over Cachoeira Paulista, a low-latitude station in the Brazilian region, in which the Es layer development is not driven tidal winds only as it is at middle latitudes. The coincident events were analyzed using the RO technique and ionosonde observations during the year 2014 to 2016. We used the electron density obtained using the blanketing frequency parameter (fbEs) and the Es layer height (h'Es) acquired from the ionograms to validate the satellite measurements. The comparative results show that the Es layer characteristics extracted from the RO measurements are in good agreement with the Es layer parameters from the digisonde. (AU)

• Processo FAPESP: 12/08445-9 - Estudo da variabilidade dia-a-dia da mesosfera, termosfera e ionosfera em baixas latitudes e região equatorial, durante o ciclo solar 24
• Beneficiário: Paulo Roberto Fagundes
• Linha de fomento: Auxílio à Pesquisa - Temático
• Processo FAPESP: 14/11198-9 - Análise do efeito de campos elétricos perturbados nas camadas es em regiões equatoriais e de baixas latitudes
• Beneficiário: Láysa Cristina Araújo Resende Chagas
• Linha de fomento: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 17/01332-8 - Validação dos resultados simulados do MIRE com as medidas de satélites usando o método de rádio ocultação
• Beneficiário: Láysa Cristina Araújo Resende Chagas
• Linha de fomento: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado