@Article{GuharayBatiBuriSchu:2017:SiQuOs,
               author = "Guharay, A. and Batista, Paulo Prado and Buriti, R. A. and Schuch, 
                         Nelson Jorge",
          affiliation = "{Physical Research Laboratory} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Universidade Federal de Campina 
                         Grande (UFCG)} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)}",
                title = "Signature of the quasi-27-day oscillation in the MLT and its 
                         relation with solar irradiance and convection",
              journal = "Journal of Atmospheric and Solar-Terrestrial Physics",
                 year = "2017",
               volume = "161",
                pages = "1--7",
             abstract = "Intermittent occurrence of the quasi-27-day oscillation is 
                         observed in the mesosphere and lower thermosphere (MLT) zonal wind 
                         in the long term database over three southern hemispheric 
                         Brazilian locations, i.e. Sao Joao do Cariri (7.4°S, 36.5°W), 
                         Cachoeira Paulista (22.7°S, 45°W) and Santa Maria (29.7°S, 
                         53.7°W). The oscillation shows a peak amplitude of \∼15 m/s 
                         in the lower MLT. To determine the plausible sources of the 
                         quasi-27-day oscillation, the variation of the solar Ly-\α 
                         flux and outgoing longwave radiation (proxy for convection) have 
                         been looked into. The oscillation shows considerable consistency 
                         with the solar UV flux implying potential solar influence on 
                         excitation. The oscillation in the MLT also exhibits good 
                         correlation with the outgoing longwave radiation at Cachoeira 
                         Paulista indicating plausible influence of lower atmospheric 
                         convective activity. Non-concurrent occurrence of the oscillation 
                         among the observational stations indicates potential role of local 
                         geophysical conditions. The zonal background wind in the MLT might 
                         cause dissipation of the upward propagating waves (modulated by 
                         27-day oscillation) and hence imprint the lower atmospheric 27-day 
                         signature in the MLT.",
                  doi = "10.1016/j.jastp.2017.06.001",
                  url = "http://dx.doi.org/10.1016/j.jastp.2017.06.001",
                 issn = "1364-6826",
                label = "lattes: 0549130828972280 4 GuharayBatiBuriSchu:2017:SiQuOs",
             language = "en",
        urlaccessdate = "27 abr. 2024"
}