@Article{Dare-IdowuPaFiMeBuPaWr:2020:InSoGr,
               author = "Dare-Idowu, Oluwakemi and Paulino, Igo and Figueiredo, Cosme 
                         Alexandre Oliveira Barros and Medeiros, Amauri F. and Buriti, 
                         Ricardo A. and Paulino, Ana Roberta and Wrasse, Cristiano Max",
          affiliation = "{Universidade Federal de Campina Grande (UFCG)} and {Universidade 
                         Federal de Campina Grande (UFCG)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Universidade Federal de Campina 
                         Grande (UFCG)} and {Universidade Federal de Campina Grande (UFCG)} 
                         and {Universidade Federal de Campina Grande (UFCG)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)}",
                title = "Investigation of sources of gravity waves observed in the 
                         Brazilian equatorial region on 8 April 2005",
              journal = "Annales Geophysicae",
                 year = "2020",
               volume = "38",
               number = "2",
                pages = "507--516",
                month = "Apr.",
             abstract = "On 8 April 2005, strong gravity wave (GW) activity (over a period 
                         of more than 3 h) was observed in S{\~a}o Jo{\~a}o do Cariri 
                         (7.4\◦ S, 36.5\◦ W). These waves propagated to the 
                         southeast and presented different spectral characteristics 
                         (wavelength, period and phase speed). Using hydroxyl (OH) airglow 
                         images, the characteristics of the observed GWs were calculated; 
                         the wavelengths ranged between 90 and 150 km, the periods ranged 
                         from \∼ 26 to 67 min and the phase speeds ranged from 32 to 
                         71 m s\−1 . A reverse ray-tracing analysis was performed to 
                         search for the possible sources of the waves that were detected. 
                         The ray-tracing database was composed of temperature profiles from 
                         the Naval Research Laboratory Mass Spectrometer Incoherent Scatter 
                         (NRLMSISE-00) model and SABER measurements as well as wind 
                         profiles from the Horizontal Wind Model (HWM) and meteor radar 
                         data. According to the ray tracing result, the likely source of 
                         these observed gravity waves was the Intertropical Convergence 
                         Zone, which caused intense convective processes to take place in 
                         the northern part of the observatory. Also, the observed 
                         preferential propagation direction of the waves to the southeast 
                         could be explained using blocking diagrams, i.e. due to the wind 
                         filtering process.",
                  doi = "10.5194/angeo-38-507-2020",
                  url = "http://dx.doi.org/10.5194/angeo-38-507-2020",
                 issn = "0992-7689",
             language = "en",
           targetfile = "dare_investigation.pdf",
        urlaccessdate = "27 abr. 2024"
}