@Article{EgitoBuriMedeTaka:2018:UlKeWa,
               author = "Egito, F{\'a}bio and Buriti, Ricardo Arlen and Medeiros, Amauri 
                         Fragoso and Takahashi, Hisao",
          affiliation = "{Universidade Federal do Rec{\^o}ncavo da Bahia (UFRB)} and 
                         {Universidade Federal de Campina Grande (UFCG)} and {Universidade 
                         Federal de Campina Grande (UFCG)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Ultrafast Kelvin waves in the MLT airglow and wind, and their 
                         interaction with the atmospheric tides",
              journal = "Annales Geophysicae",
                 year = "2018",
               volume = "36",
               number = "1",
                pages = "231--241",
                month = "Feb.",
             keywords = "Atmospheric composition and structure (air-glow and aurora), 
                         meteorology and atmospheric dynamics, middle atmosphere dynamics, 
                         waves and tides.",
             abstract = "Airglow and wind measurements from the Brazilian equatorial region 
                         were used to investigate the presence and the effects of the 
                         3-4-day ultrafast Kelvin waves in the MLT. The airglow integrated 
                         intensities of the OI557.7 nm, O2b(0-1) and OH(6-2) emissions, as 
                         well as the OH rotational temperature, were measured by a 
                         multichannel photometer, and the zonal and meridional wind 
                         components between 80 and 100 km were obtained from a meteor 
                         radar. Both instruments are installed in the Brazilian equatorial 
                         region at Sao Joao do Cariri (7.4 degrees S, 36.5 degrees W). Data 
                         from 2005 were used in this study. The 3-4-day oscillations appear 
                         intermittently throughout the year in the airglow. They were 
                         identified in January, March, July, August and October-November 
                         observations. The amplitudes induced by the waves in the airglow 
                         range from 26 to 40% in the OI557.7 nm, 17 to 43% in the O2b(0-1) 
                         and 15 to 20% in the OH(6-2) emissions. In the OH rotational 
                         temperature, the amplitudes were from 4 to 6 K. Common 3-4-day 
                         oscillations between airglow and neutral wind compatible with 
                         ultrafast Kelvin waves were observed in March, August and 
                         October-November. In these cases, the amplitudes in the zonal wind 
                         were found to be between 22 and 28ms(-1) and the vertical 
                         wavelength ranges from 44 to 62 km. Evidence of the nonlinear 
                         interaction between the ultrafast Kelvin wave and diurnal tide was 
                         observed.",
                  doi = "10.5194/angeo-36-231-2018",
                  url = "http://dx.doi.org/10.5194/angeo-36-231-2018",
                 issn = "0992-7689",
             language = "en",
           targetfile = "egito_ultrafast.pdf",
        urlaccessdate = "27 abr. 2024"
}