@InProceedings{Romero-HernandezDGTNBJREPRLSA:2021:StTEVa,
               author = "Romero-Hernandez, E. and Denardini, Clezio Marcos and 
                         Gonzalez-Esparza, J. A. and Takahashi, Hisao and Nogueira, P. A. 
                         B. and Barbosa Neto, Paulo Fran{\c{c}}a and Jonah, O. F. and 
                         Resende, L. C. A. and Essien, Patrick and Pican{\c{c}}o, Giorgio 
                         Arlan da Silva and Rodriguez-Martinez, M. and Luz, V. and 
                         Sergeeva, M. and Aguilar-Rodriguez, E. and Perez-Tijreina",
          affiliation = "{Universidad Aut{\'o}noma de Nuevo Le{\'o}n} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Universidad Nacional 
                         Aut{\'o}noma de M{\'e}xico} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and Instituto Federal de Educa{\c{c}}{\~a}o, 
                         Ci{\^e}ncia e Tecnologia de S{\~a}o Paulo and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Massachusetts 
                         Institute of Technology} and {National Space Science Center} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Universidad Nacional 
                         Aut{\'o}noma de M{\'e}xico} and {Universidad Nacional 
                         Aut{\'o}noma de M{\'e}xico} and {Universidad Nacional 
                         Aut{\'o}noma de M{\'e}xico} and {Universidad Nacional 
                         Aut{\'o}noma de M{\'e}xico} and {Universidad Aut{\'o}noma de 
                         Nuevo Le{\'o}n}",
                title = "Study of TEC variations over the Latin American region during 
                         moderate and high solar activity",
                 year = "2021",
         organization = "Simp{\'o}sio Brasileiro de Geof{\'{\i}}sica Espacial e 
                         Aeronomia, 8. (SBGEA)",
             abstract = "The ionospheric plasma is a scattering medium that can affect the 
                         trajectory of ground-based Global Navigation Satellite System 
                         (GNSS) signals, introducing positioning errors. When the solar 
                         activity is lower, the ionosphere is almost transparent to the 
                         radio waves. However, when it is disturbed, satellite signals are 
                         refracted (higher electronic density). Thus, the ionosphere is a 
                         region highly relevant for Space Weather studies, from which it is 
                         possible to know the solar activity state. The present work is a 
                         comprehensive study of the ionospheric Total Electron Content 
                         (TEC) variations based on data obtained from (GNSS) receivers 
                         (networks) available in Latin America. Annual TEC trends at 
                         daytime and nighttime are studied for different solar activity 
                         conditions: 2011 (ascending phase) and 2014 (maximum phase). The 
                         present analysis was focused on: (1) response to the solar flux 
                         variation; (2) seasonal variations in different latitudes and 
                         longitudes; and (3) interhemispheric asymmetry. The 
                         daytime-nighttime comparison was performed to analyze the 
                         ionosphere dynamics in this period. The results showed that: in 
                         the daytime there were equinoctial asymmetries with an opposite 
                         configuration in high and moderate solar activity, and some 
                         hemispherical asymmetries were observed which seems to be 
                         attributed to the meridional winds; while in the nighttime a 
                         strong latitudinal dependence of nighttime vTEC variation was 
                         observed, and the Midlatitude Summer Nighttime Anomaly (MSNA) in 
                         the Southern hemisphere was identified during January, February, 
                         and December of 2011. Also, the neutral wind approximations 
                         suggest that MSNA was associated with the presence of equatorward 
                         winds.",
  conference-location = "Online",
      conference-year = "22-26 mar.",
             language = "en",
        urlaccessdate = "05 maio 2024"
}