@Article{VargasGobbTakaLima:2009:GrWaAm,
               author = "Vargas, F and Gobbi, D and Takahashi, H and Lima, L. M.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)}",
                title = "Gravity wave amplitudes and momentum fluxes inferred from OH 
                         airglow intensities and meteor radar winds during SpreadFEx",
              journal = "Annales Geophysicae",
                 year = "2009",
               volume = "27",
               number = "6",
                pages = "2361--2369",
             keywords = "Atmospheric composition and structure, Airglow and aurora, 
                         Meteorology and atmospheric dynamics, Middle atmosphere dynamics, 
                         Waves and tides, middle atmosphere, mesosphere, responses, 
                         campaign, energy, models, brazil.",
             abstract = "We show in this report the momentum flux content input in the 
                         mesosphere due to relatively fast and small scale gravity waves 
                         (GWs) observed through OH airglow images. The acquisition of OH 
                         NIR images was carried out in Brazil at Brasilia (14.8 degrees S, 
                         47.6 degrees W) and Cariri (7.4 degrees S, 36.5 degrees W) from 
                         September 2005 to November 2005 during the SpreadFEx Campaign. 
                         Horizontal wind information from meteor radar was available in 
                         Cariri only. Our findings showed strong wave activity in both 
                         sites, mainly in Cariri. High wave directionality was also 
                         observed in both sites during SpreadFEx, which have been observed 
                         by other investigators using different analysis' techniques and 
                         different types of data during the campaign. We discuss also the 
                         possibility of plasma bubble seeding by gravity waves presenting 
                         spatial and temporal scales estimated with our novel analysis 
                         technique during the SpreadFEx campaign.",
                 issn = "0992-7689",
             language = "en",
           targetfile = "angeo-27-2361-2009.pdf",
        urlaccessdate = "02 maio 2024"
}