@InProceedings{EgitoBuriMedeTaka:2017:34DaUl,
               author = "Egito, F{\'a}bio and Buriti, Ricardo A. and Medeiros, Amauri 
                         Fragoso de and Takahashi, Hisao",
          affiliation = "{Universidade Federal do Oeste da Bahia (UFOB)} and {Universidade 
                         Federal de Campina Grande (UFCG)} and {Universidade Federal de 
                         Campina Grande (UFCG)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)}",
                title = "The 3-4 day Ultra-Fast Kelvin wave (UFKW) induced airglow and MLT 
                         wind variability and its possible interaction with diurnal tide 
                         over the Brazilian equatorial region",
                 year = "2017",
         organization = "International Congress of the Brazilian Geophysical Sociey, 15.",
             abstract = "Airglow and wind measurements from the Brazilian equatorial region 
                         have been used to investigate the presence and the effects of the 
                         3-4 day Ultra-Fast Kelvin Wave in the MLT. Airglow data came from 
                         a multichannel photometer, which measures the OI5577, O2b(0-1) and 
                         OH(6-2) airglow integrated intensities and the OH rotational 
                         temperature. Wind measurements were performed by a meteor radar, 
                         which provides zonal and meridional wind between 80 and 100 km 
                         altitude. Both instruments are installed at S{\~a}o Jo{\~a}o do 
                         Cariri (7.4°S, 36.5°W) and provided quasi-simultaneous data in 
                         2005. The results show that the 3-4 day oscillations appear 
                         intermittently along the year in both airglow and wind. The 3-4 
                         day oscillations compatible with Ultra-fast Kelvin wave were 
                         observed simultaneously in both airglow and wind in March, August 
                         and October/November. Ultra-fast Kelvin wave induced amplitudes in 
                         the airglow overcome 40% in OI5577 and O2b(0-1) emissions, while 
                         in OH(6-2) emission the amplitudes range from 15 to 20%. In the 
                         temperature, amplitudes were near 3 K. The presence of the 3-4 day 
                         oscillation in the airglow seems to be affected by the local time 
                         of the measurements, which occurred particularly in OI5577 
                         emission. It was observed that taking pre-midnight airglow data 
                         could hide the presence of 3-4 day oscillation. Such feature is 
                         related to the interaction between the Ultra-Fast Kelvin Wave and 
                         the diurnal tide, which is indicated by a modulation of the 
                         diurnal tide amplitude in the zonal wind at the period of the 
                         Ultra-Fast Kelvin Wave.",
  conference-location = "Rio de Janeiro, RJ",
      conference-year = "31 jul. - 03 ago.",
             language = "en",
           targetfile = "Egito_the.pdf",
        urlaccessdate = "24 abr. 2024"
}