@InProceedings{FagundesMuBiSaLiBePi:2006:NiThCo,
               author = "Fagundes, Paulo Roberto and Muella, M{\'a}rcio Tadeu de Assis 
                         Honorato and Bittencourt, Jos{\'e} Agusto and Sahai, Yogeshwar 
                         and Lima, W. L. C. and Becker-Guedes, F. and Pillat, V. G.",
          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)} and {Universidade Luterana do Brasil (ULBRA)} 
                         and {Universidade do Vale do Para{\'{\i}}ba (UNIVAP)} and 
                         {Universidade do Vale do Para{\'{\i}}ba (UNIVAP)}",
                title = "Nighttime thermospheric-ionospheric coupling during geomagnetic 
                         storms",
            booktitle = "Proceedings...",
                 year = "2006",
         organization = "Committe on Space Research, 36. (COSPAR).",
             abstract = "The electrodynamics of the ionosphere in the tropical region 
                         presents various scientific aspects, which remain subject of 
                         intensive investigations and debates by the scientific community. 
                         During the year 2002, in a joint project between Universidade do 
                         Vale do Para{\'{\i}}ba (UNIVAP) and Universidade Luterana do 
                         Brasil (ULBRA), a chain of three Canadian Digital Ionosondes 
                         (CADIs) was established nearly along the geomagnetic meridian 
                         direction, for tropical ionospheric studies, such as, the 
                         generation and dynamics of ionospheric irregularities, changes and 
                         response due to geomagnetic disturbances and 
                         thermosphere-ionosphere coupling, in the Brazilian sector. The 
                         locations of the three ionosonde stations are S{\~a}o Jos{\'e} 
                         dos Campos (23.2o S, 45.9oW, dip latitude 17.6o S - under the 
                         Equatorial Ionospheric Anomaly), Palmas (10.2oS, 48.2o W, dip 
                         latitude 5.5o S near the magnetic equator) and Manaus (2.9oS, 
                         60.0o W, dip latitude 6.4oN near the magnetic equator). It should 
                         be pointed out that Palmas and Manaus are located on opposite side 
                         of the magnetic equator but both are south of the geographic 
                         equator. The three CADIs work in time-synchronized mode and obtain 
                         ionograms every 5 minutes. This unique configuration of the 
                         ionospheric sounding stations allowed us to study the F-region 
                         dynamics during disturbed periods in the months of August and 
                         September 2002. Then an extension of the servo model was used to 
                         infer the magnetic meridional component of the thermospheric 
                         neutral winds over the low latitude station. The coefficients of 
                         diffusion, recombination and loss rate, required in the servo 
                         equations, were calculated using an appropriated atmospheric model 
                         (MSIS-90). In this paper we show that the ionospheric parameters 
                         h0F, hpF2, FoF2 and the inferred meridional wind are strong 
                         affected by the geomagnetic storms.",
  conference-location = "Beijing, China",
      conference-year = "2006-07-16",
                label = "self-archiving-INPE-MCTIC-GOV-BR",
             language = "en",
           targetfile = "fagundes_nightime.pdf",
        urlaccessdate = "09 maio 2024"
}