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@Article{MedeirosPWFTBPB:2018:CaStMe,
               author = "Medeiros, Amauri Fragoso and Paulino, Igo and Wrasse, Cristiano 
                         Max and Fechine, Joaquim and Takahashi, Hisao and Bageston, 
                         Jos{\'e} Valentin and Paulino, Ana Roberta and Buriti, Ricardo 
                         Arlen",
          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 {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Universidade Federal de Campina Grande (UFCG)} and {Universidade 
                         Federal de Campina Grande (UFCG)}",
                title = "Case study of mesospheric front dissipation observed over the 
                         northeast of Brazil",
              journal = "Annales Geophysicae",
                 year = "2018",
               volume = "36",
               number = "2",
                pages = "311--319",
                month = "Mar.",
             keywords = "Atmospheric composition and structure (airglow and aurora), 
                         meteorology and atmospheric dynamics (middle atmosphere dynamics, 
                         waves and tides).",
             abstract = "On 3 October 2005 a mesospheric front was observed over Sao Joao 
                         do Cariri (7.4 degrees S, 36.5 degrees W). This front propagated 
                         to the northeast and appeared in the airglow images on the west 
                         side of the observatory. By about 1.5 h later, it dissipated 
                         completely when the front crossed the local zenith. Ahead of the 
                         front, several ripple structures appeared during the dissipative 
                         process of the front. Using coincident temperature profile from 
                         the TIMED/SABER satellite and wind profiles from a meteor radar at 
                         Sao Joao do Cariri, the background of the atmosphere was 
                         investigated in detail. On the one hand, it was noted that a 
                         strong vertical wind shear in the propagation direction of the 
                         front produced by a semidiunal thermal tide was mainly responsible 
                         for the formation of duct (Doppler duct), in which the front 
                         propagated up to the zenith of the images. On the other hand, the 
                         evolution of the Richardson number as well as the appearance of 
                         ripples ahead of the main front suggested that a presence of 
                         instability in the airglow layer that did not allow the 
                         propagation of the front to the other side of the local zenith.",
                  doi = "10.5194/angeo-36-311-2018",
                  url = "http://dx.doi.org/10.5194/angeo-36-311-2018",
                 issn = "0992-7689",
             language = "en",
           targetfile = "medeiros_case.pdf",
        urlaccessdate = "26 nov. 2020"
}


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