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@Article{ResendeArBaDeBeMo:2018:StSpLa,
               author = "Resende, Laysa Cristina Ara{\'u}jo and Arras, Christina and 
                         Batista, Inez Staciarini and Denardin, Clezio Marcos and 
                         Bertollotto, Thain{\'a} Oliveira and Moro, Juliano",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {German 
                         Research Centre for Geosciences (GFZ)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)} and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Study of sporadic E layers based on GPS radio occultation 
                         measurements and digisonde data over the Brazilian region",
              journal = "Annales Geophysicae",
                 year = "2018",
               volume = "36",
               number = "2",
                pages = "587--593",
                month = "Apr.",
             keywords = "Ionosphere, ionosphere-atmosphere interactions.",
             abstract = "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.",
                  doi = "10.5194/angeo-36-587-2018",
                  url = "http://dx.doi.org/10.5194/angeo-36-587-2018",
                 issn = "0992-7689",
             language = "en",
           targetfile = "resende_study.pdf",
        urlaccessdate = "30 nov. 2020"
}


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