@InProceedings{SantosBaAbSoSoBr:2021:ClInDe,
               author = "Santos, A. M. and Batista, Inez Staciarini and Abdu, Mangalathayil 
                         Ali and Sobral, Jos{\'e} Humberto Andrade and Souza, Jonas 
                         Rodrigues de and Brum, C. G. 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)} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)} and {University of Central Florida}",
                title = "Climatology of intermediate descending layers over the equatorial 
                         and low latitude regions of Brazil during a solar minimum period",
                 year = "2021",
         organization = "Simp{\'o}sio Brasileiro de Geof{\'{\i}}sica Espacial e 
                         Aeronomia, 8. (SBGEA)",
             abstract = "this work, we discuss the climatology of the intermediate 
                         descending layers (ILs) over Brazilian equatorial and low 
                         latitudes regions during the extreme solar minimum period of 2009. 
                         The results shows that the occurrence frequency of the ILs is very 
                         high, being > 60% over Sao LuŽ\ıs (2\◦ S; 44\◦ 
                         W, I: -5.7\◦ ) and > 90% in Cachoeira Paulista 
                         (22.42\◦ S; 45\◦ W, I: -34.4\◦ ). In most 
                         cases the ILs occur during the day at altitudes varying from 130 
                         to 180 km and they may descend to lower altitudes (\∼ 100 
                         km) in a time interval of a few minutes to hours. The main driving 
                         force for the ILs at the low latitude region may be considered to 
                         be the diurnal tide (24 h) followed in smaller dominance by the 
                         semidiurnal (12 h), terdiurnal (8 h) and quarter-diurnal (6 h) 
                         components. The semidiurnal tide, however, does not appear to 
                         influence the ILs dynamics except in summer. Additionlly, the ILs 
                         mean descent velocities over Sao LuŽ\ıs and Cachoeira 
                         Paulista show a day-to-day variability that may be associated to a 
                         wave like perturbation with a periodicity of some days. Some 
                         peculiarities in the ILs dynamics were observed e will be 
                         discussed in this work.",
  conference-location = "Online",
      conference-year = "22-26 mar.",
             language = "en",
        urlaccessdate = "09 maio 2024"
}