@Article{GuharayBatiBuri:2021:ObQuOs,
               author = "Guharay, A. and Batista, Paulo Prado and Buriti, R. A.",
          affiliation = "Space and Atmospheric Sciences Division, Physical Research 
                         Laboratory and {Instituto Nacional de Pesquisas Espaciais (INPE)} 
                         and {Universidade Federal de Campina Grande (UFCG)}",
                title = "Observations of a quasi-90-day oscillation in the MLT winds and 
                         tides over an equatorial station using meteor radar winds",
              journal = "Advances in Space Research",
                 year = "2021",
               volume = "67",
               number = "10",
                pages = "3125--3133",
                month = "May",
             keywords = "uasi-90-day oscillation, MLT dynamics, Meteor radar winds.",
             abstract = "An evident signature of a least studied quasi-90-day oscillation 
                         is found in the winds and tides in the MLT from an equatorial 
                         station, S{\~a}o Jo{\~a}o do Cariri (7.4°S, 36.5°W). The 
                         oscillation is found to appear mainly in certain intervals with 
                         small but appreciable seasonal (fourth harmonic of annual 
                         oscillation) contribution. The maximum amplitude of the 
                         oscillation is found to be around 10 m/s in the zonal wind. The 
                         enhancement peak of the oscillation exhibits downward movement 
                         indicating a plausible role of upward moving waves/tides in 
                         carrying its imprint from below to the MLT. Similar oscillation 
                         feature in the tropospheric zonal wind and ozone may imply its 
                         lower atmospheric origin as a component of the intraseasonal 
                         oscillation (ISO) that moves upward by modulating the tides. 
                         Subsequently, the propagating tides (mainly semidiurnal) are 
                         enhanced by the ozone in the stratosphere through absorption of 
                         solar UV radiation and finally manifest the oscillation in the 
                         MLT. Consistency of the present findings with the past 
                         investigations are observed in some aspects of the oscillation, 
                         whereas existing mismatches in others are believed to be due to 
                         geophysical variability depending on space and time among various 
                         locations on the globe.",
                  doi = "10.1016/j.asr.2021.02.004",
                  url = "http://dx.doi.org/10.1016/j.asr.2021.02.004",
                 issn = "0273-1177 and 1879-1948",
             language = "en",
           targetfile = "guharay_obsevations.pdf",
        urlaccessdate = "02 maio 2024"
}