@InProceedings{RidentiCampAbreM:2021:StTrIo,
               author = "Ridenti, M. a. and Campos, E. de and Abreu, Alessandro Jos{\'e} 
                         de and M. , Roberto.",
          affiliation = "{Instituto Tecnol{\'o}gico de Aeron{\'a}utica (ITA)} and {Escola 
                         de Especialistas de Aeron{\'a}utica (EEAR)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Tecnol{\'o}gico de Aeron{\'a}utica (ITA)}",
                title = "Study of the troposphere- ionosphere coupling in the brazilian 
                         sector by means of gravity waves during minimum and maximum solar 
                         cycle 24",
                 year = "2021",
         organization = "Simp{\'o}sio Brasileiro de Geof{\'{\i}}sica Espacial e 
                         Aeronomia, 8. (SBGEA)",
             abstract = "The study of equatorial ionospheric irregularities and plasma 
                         bubbles is a topic of active research due to its key role in the 
                         dynamic processes in the upper atmosphere. Studies of equatorial 
                         ionospheric irregularities are motivated by the need of reliable 
                         space weather forecasting models for aeronautics and aerospace 
                         activities, which may be substantially affected by ionospheric 
                         instabilities. In the equatorial and low latitude regions in the 
                         Brazilian sector, strong ionospheric irregularities occur 
                         frequently. They are caused by a mechanism of plasma instability 
                         known as collisional interchange instability (CII). The CII is 
                         seeded by some initial disturbance in the base of the F layer in 
                         the sunset, where high vertical drift velocities may occur due to 
                         an effect known as pre-reversal enhancement (PRE). The initial 
                         disturbances are generally associated with atmospheric waves, 
                         called acoustic gravity waves (AGWs), which are generated by 
                         tropospheric convection and depend on meteorological conditions. 
                         The AGWs can occur due to tropospheric convection at altitudes 
                         ranging from 10 to 20 km and propagating upwards. As the density 
                         of the atmosphere decreases with altitude, the gravity wave 
                         amplitudes increase exponentially and become maximum in the F 
                         region. The objective of this study is to establish a correlation 
                         between the data obtained by meteorological stations (aerodromes - 
                         commonly used by the Air Force Command) and by Global Positioning 
                         System (GPS), from which the total electron content (TEC) was 
                         calculated. Altitude and surface data were obtained from 32 
                         meteorological stations prepared by the Sessao de Meteorologia 
                         AeronŽautica of the Instituto de Controle do Espažco AŽereoand 
                         data from approximately 120 GPS stations, which belong to the Rede 
                         Brasileira de Monitoramento ContŽ\ınuo in 2009 and 2014. The 
                         analysis of tropospheric parameters showed the existence of 
                         oscillations compatible with those responsible for the generation 
                         of gravity waves.",
  conference-location = "Online",
      conference-year = "22-26 mar.",
             language = "en",
        urlaccessdate = "04 maio 2024"
}