author = "Becker Guedes, F{\'a}bio and Candido, Cl{\'a}udia Maria Nicoli 
                         and Klausner, V. and Chingarandi, F. S. and Santos, S. P. M.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Universidade do Vale 
                         do Para{\'{\i}}ba (UNIVAP)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Instituto Nacional de Pesquisas Espaciais 
                title = "GNSS-Derived Indexes for Use in Ionospheric Situation Reports",
                 year = "2019",
         organization = "IUGG General Assembly, 27.",
             abstract = "Various economic and social benefits come from the use of Global 
                         Navigation Satellite System (GNSS) for positioning determination, 
                         but its true capabilities to do so strongly rely on our knowledge 
                         about the ionosphere role in affecting the electromagnetic signal 
                         coming from the satellite system in the specific moment of the 
                         observation. One way to address this problem is to study the 
                         development of the scintillation and the TEC (Total Electron 
                         Content) daily variation using GNSS receivers. The seasonal 
                         changes, the solar cycle dependence, the level of solar activity, 
                         the conditions of the interplanetary medium, the local time, and 
                         the presence of geomagnetic disturbances, must all be considered 
                         to give an accessible way to characterize the ionospheric response 
                         to space weather conditions. At low latitudes, the geographic 
                         position of the station assumes great importance as the proximity 
                         of the geomagnetic equator, with its recurrent ionospheric 
                         scintillation, or the influence of the equatorial ionization 
                         anomaly (EIA), with its large TEC gradients, could drastically 
                         interfere in the ionospheric disturbances over electromagnetic 
                         waves. In this work, we considered creating an analysis of GNSS 
                         TEC and scintillation data in equatorial and low-latitude regions, 
                         giving a straightforward ionospheric situation record, to possibly 
                         be used by Space Weather Warning Centers or Air Traffic Control 
                         Facilities. We propose using a multi-level scale index weighted by 
                         the current Space Weather conditions to inform the ionospheric 
                         scintillation and TEC conditions. Also, the viability of 
                         percentual forecasting of the variation of these indexes, based on 
                         the current situational report, is studied.",
  conference-location = "Montr{\'e}al, Canada",
      conference-year = "08-18 July",
        urlaccessdate = "15 abr. 2021"