@InProceedings{SantosAdbuNogu:2009:CoObDa,
               author = "Santos, {\^A}ngela M. and Adbu, Mangalathayil Ali and Nogueira, 
                         Paulo Alexandre Bronzato",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Solar flux effects on the prereversal vertical drift for solar 
                         minimum conditions: a comparision between observational data and 
                         IRI model",
            booktitle = "Proceedings...",
                 year = "2009",
         organization = "Iaga, 2009.",
             keywords = "Aeronomy, ionosphere, vertical drift.",
             abstract = "This study presents an analysis of the evening F- region 
                         prereversal vertical drift variation over Brazil as a function of 
                         the solar flux (F10.7). The vertical drift is determined using 
                         true heights data obtained from ionograms recorded by digisondes 
                         operated at in S{\~a}o Luis (44.2º W, 2.33º S, dip angle: -2.7º) 
                         and Fortaleza (38.45º W, 3.9º S, dip angle: -11.5º). Data 
                         collected from October to December in the solar minimum years of 
                         2006 and 2007 were used in the analysis. The results show that for 
                         both S{\~a}o Luis and Fortaleza the evening vertical drift 
                         significant dependence on solar flux variation, i.e., the vertical 
                         drift increases with the increase in solar flux. This results of 
                         vertical drift will compared with model IRI and are discussed from 
                         the perspective of validating the IRI model.",
  conference-location = "Sopron, Hungary",
      conference-year = "23-30 Aug.",
             language = "en",
        urlaccessdate = "20 maio 2024"
}