@InProceedings{ChingarandiBeckCandSant:2021:StLaVa,
               author = "Chingarandi, Frank and Becker-Guedes, F{\'a}bio and Candido, 
                         Cl{\'a}udia Maria Nicoli and Santos, S. M.",
          affiliation = "{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 = "A Study on the latitudinal variation of radio wave scintillation 
                         over the brazilian sector during geomagnetic storms",
                 year = "2021",
         organization = "Simp{\'o}sio Brasileiro de Geof{\'{\i}}sica Espacial e 
                         Aeronomia, 8. (SBGEA)",
             abstract = "The ionosphere is a medium which has significant effects on the 
                         propagation of radio waves. Total Electron Content (TEC), is 
                         defined as the integral of the free electrons along the path from 
                         the satellite to the receiver. The magnitude of the TEC varies 
                         with the time of the day, latitude, season of the year, solar 
                         activity and geomagnetic activity. This is due to the exchange of 
                         energy from the solar wind, interplanetary magnetic field and the 
                         Earthas magnetosphere. TEC thus gives us a measure of the density 
                         of the ionosphere electron density. Scintillation in GPS signals 
                         is due to the presence of irregularities in the low latitude 
                         ionosphere. This can have significant impact on Air Navigation 
                         systems, Agriculture, Petroleum well as other industries which 
                         depends on GPS for their operations. The intensity of the 
                         scintillation is measured using the S4, ROT and ROTi indices. The 
                         intensity depends on the background electron density as indicated 
                         by the Total Electron Content. Thus these parameters can together 
                         be used to study the behavior of the ionosphere at different 
                         latitudes. This can be achieved by comparing the intensity of 
                         scintillation at sites located near the magnetic equator with 
                         sites located in the Equatorial Ionisation Anomaly region.",
  conference-location = "Online",
      conference-year = "22-26 mar.",
             language = "en",
        urlaccessdate = "20 maio 2024"
}