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@InProceedings{LimaPauAlmTakWra:2019:2dPlWa,
               author = "Lima, L. Mota and Paulino, A. R. and Almeida, S. L. and Takahashi, 
                         Hisao and Wrasse, Cristiano Max",
          affiliation = "{Universidade Estadual da Para{\'{\i}}ba (UEPB)} and 
                         {Universidade Estadual da Para{\'{\i}}ba (UEPB)} and 
                         {Universidade Estadual da Para{\'{\i}}ba (UEPB)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "2-day Planetary Wave Signatures in GPS-TEC Data over Brazil",
                 year = "2019",
         organization = "IUGG General Assembly, 27.",
             abstract = "The presence of oscillations with periods of planetary waves in 
                         the ionospheric parameters has been associated with 
                         mesosphere-ionosphere coupling. Ionospheric GPS-TEC data 
                         modulation by planetary oscillations with two-day wave period have 
                         been investigated over Brazil, during January-February 2014. 
                         Geomagnetic field measurements by magnetometers and winds from 
                         meteor radar were used to identify planetary wave type variations 
                         in the electric current system of the E and upper mesosphere 
                         regions. The spectra shown energy for 2-day period in the TEC 
                         residuals, relative scale coefficient obtained from geomagnetic 
                         field and for meteor winds over 23 S, suggests a connection 
                         between the MLT 2-day wave and the 2-day variability in the E and 
                         F regions. The presence of the quasi 2-day oscillations in F 
                         region cannot be explained by non-linear interactions involving 
                         wave modes from below. Therefore, the presence of quasi 2-day 
                         oscillation in the TEC parameter are interpreted as due direct 
                         2-day wave propagation from MLT region, which modulate the winds 
                         and electric field in E region which, in turn, is transmitted by 
                         magnetic field lines into F region to modulate the vertical drift, 
                         and thus print an oscillation with period of quasi 2-day in 
                         electron density, that have been observed in TEC data.",
  conference-location = "Montr{\'e}al, Canada",
      conference-year = "08-18 July",
        urlaccessdate = "27 nov. 2020"
}


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