author = "Guharay, A. and Batista, Paulo Prado and Clemesha, Barclay 
          affiliation = "{Physical Research Laboratory} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)}",
                title = "Variability of the quasi-2-day wave and interaction with longer 
                         period planetary waves in the MLT at Cachoeira Paulista (22.7°S, 
              journal = "Journal of Atmospheric and Solar-Terrestrial Physics",
                 year = "2015",
               volume = "130/131",
                pages = "50--67",
                month = "Aug.",
             keywords = "Quasi-2-day wave, Mesosphere and lower thermosphere, Nonlinear 
                         wave–wave interactions.",
             abstract = "An exclusive study has been carried out with long term meteor wind 
                         data (20002014) to characterize the quasi-2-day wave (QTDW) in the 
                         mesosphere and lower thermosphere (MLT) and its interactions with 
                         the longer period planetary waves at Cachoeira Paulista (22.7°S, 
                         45°W). The QTDW is observed to be dominant during late summer 
                         (JanuaryFebruary) all the years under consideration except 2013. 
                         All the wave parameters exhibit significant interannual 
                         variability. The maximum wave amplitude comes out to be 39 m/s, 
                         which is significantly higher than the reported northern 
                         hemispheric findings. The mean MLT period exhibits a wide range of 
                         variability (3670 h) indicating the presence of multiple Rossby 
                         normal modes with varying zonal wave numbers. Modulations of the 
                         QTDW amplitude by the planetary waves with longer periodicities 
                         (>9 days) are evident, especially during summer. The nonlinear 
                         interactions between the 2-day wave and longer period waves are 
                         believed to give rise to a host of secondary waves with 
                         frequencies lying close to 2-day. The strong QTDW activity, as 
                         observed at this location, has potential to cause significant 
                         effect on the overlying ionosphere and hence the 
                         atmosphere-ionosphere dynamical coupling.",
                  doi = "10.1016/j.jastp.2015.05.010",
                  url = "http://dx.doi.org/10.1016/j.jastp.2015.05.010",
                 issn = "1364-6826",
             language = "en",
        urlaccessdate = "24 nov. 2020"