@Article{GuharayBatCleSarBur:2014:CaSt,
               author = "Guharay, Amitava and Batista, Paulo Prado and Clemesha, Barclay 
                         Robert and Sarkhel, Sumanta and Buriti, Ricardo",
          affiliation = "guharay@hotmail.com and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)} and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Investigation of the intraseasonal oscillations over a Brazilian 
                         equatorial station: a case study",
              journal = "Earth, Planets and Space",
                 year = "2014",
               volume = "66",
               number = "1",
                pages = "145",
                 note = "{Setores de Atividade: Pesquisa e desenvolvimento 
                         cient{\'{\i}}fico.}",
             keywords = "Intra-annual Oscillation (ISO), meteor radar, SkiYmet.",
             abstract = "Characteristics of the intraseasonal oscillations (ISO) in the 
                         mesosphere and lower thermosphere (MLT) are investigated using 
                         meteor radar wind observations from a South American, equatorial 
                         station, S{\~a}o Jo{\~a}o do Cariri (7.4°S, 36.5°W) during 2008. 
                         A prominent ISO signature is observed during January-May in the 
                         period band approximately 40 to 70 days in the MLT zonal wind. In 
                         the lower atmosphere, a dominant ISO is observed in the period 
                         band approximately 30 to 60 days in the outgoing longwave 
                         radiation (OLR) (a proxy for convection), total columnar water 
                         vapor (a proxy for tides), and zonal wind. Considerable high 
                         correlation of the ISO between the MLT and lower atmosphere 
                         indicates significant dynamical coupling between the lower and 
                         middle atmosphere during the observational period. The MLT-ISO 
                         shows conspicuous downward propagation of the peak amplitude 
                         indicating the role of the dissipating upward propagating waves 
                         for its generation. The amplitudes in the zonal wind of the 
                         dominant tidal components in the MLT exhibit conspicuous ISO 
                         modulation. The eastward propagating waves and tides are surmised 
                         to be responsible for communicating the ISO signature from the 
                         lower atmosphere to the MLT. The origin of the MLT-ISO is believed 
                         to take place in the lower troposphere, below 4 km. The MLT-ISO is 
                         believed to be the imprint of the lower atmospheric Madden-Julian 
                         oscillation which travels eastward from the Indian Ocean-western 
                         Pacific Ocean to the present location.",
                  doi = "10.1186/s40623-014-0145-3",
                  url = "http://dx.doi.org/10.1186/s40623-014-0145-3",
                 issn = "1343-8832",
                label = "lattes: 2306964700488382 2 GuharayBatCleSarBur:2014:CaSt",
             language = "en",
        urlaccessdate = "27 abr. 2024"
}