@Article{GuharayBatiClemBuri:2014:CoSt,
               author = "Guharay, Amitava and Batista, Paulo Prado and Clemesha, Barclay 
                         Robert and Buriti, R. A.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Universidade Federal de Campina 
                         Grande (UFCG)}",
                title = "Observations of the intraseasonal oscillations over two Brazilian 
                         low latitude stations: A comparative study",
              journal = "Journal of Atmospheric and Solar-Terrestrial Physics",
                 year = "2014",
               volume = "120",
                pages = "62--69",
             keywords = "Comparative studies, Intraseasonal oscillations, Low latitudes, 
                         Meteor radars, Middle atmosphere.",
             abstract = "A comparative study of intraseasonal oscillations (ISO) in the 
                         period range 20-110 days is carried out in the mesosphere and 
                         lower thermosphere (MLT) zonal wind at two low latitude stations, 
                         Cariri (7.4°S, 36.5°W) and Cachoeira Paulista (22.7°S, 45°W) 
                         located far from the convective anomaly region. Considerable 
                         seasonal and interannual variability is observed. The ISO in the 
                         MLT and lower atmosphere are found to be well correlated during 
                         winter and spring indicating a coupling of the atmospheric regions 
                         through the ISO. On the other hand, relatively less correlation 
                         during summer and fall may suggest a dominance of the in situ 
                         excitation of the ISO in the MLT relative to the lower atmospheric 
                         contribution. The correlation between the MLT and lower atmosphere 
                         is found to be a little higher at Cachoeira Paulista than Cariri. 
                         The ISO in the MLT shows good correlation between the two 
                         stations, but correlation is insignificant in the case of lower 
                         atmosphere. The ISO is most prominent in the upper troposphere, 
                         upper stratosphere and MLT. The waves responsible for 
                         communicating the ISO signature from the troposphere to the middle 
                         atmosphere in the tropics are believed to refract through 
                         mid-latitudes in course of their propagation. An evident height 
                         variation of the high amplitude ISO in the upper troposphere is 
                         observed with a clear annual oscillation at Cariri. The observed 
                         behaviors of the ISO at the present sites are discussed in the 
                         light of plausible physical mechanisms.",
                  doi = "10.1016/j.jastp.2014.08.016",
                  url = "http://dx.doi.org/10.1016/j.jastp.2014.08.016",
                 issn = "1364-6826",
                label = "scopus 2014-11 GuharayBatiClemBuri:2014:CoSt",
             language = "en",
           targetfile = "Guharay_observations.pdf",
        urlaccessdate = "27 abr. 2024"
}