author = "Takahashi, Hisao and Wrasse, Cristiano Max and Fechine, Joaquim 
                         and Medeiros, A. F. and Wickert, J. and Gobbi, Delano and 
                         Nakamura, T. and Shiokawa, K.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Universidade Federal de Campina 
                         Grande} and {The German Research Center for Earth Sciences} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)} and Research 
                         Institute for sustainable humanosphere, Kyoto University and 
                         Solar-Terrestrial Environment Laboratory, Nagoya University",
                title = "Atmospheric gravity wave activity in the equatorial region 
                         observed by optical and radio-wave techniques (solicited)",
            booktitle = "Proceedings...",
                 year = "2006",
         organization = "Committe on Space Research, 36. (COSPAR).",
             abstract = "Gravity wave signatures in the upper mesosphere to lower 
                         thermosphere (MLT) in the equatorial and low latitude regions have 
                         been investigated by airglow imaging technique from the south 
                         American sector at Cariri (7 S, 36 W). The wave characteristics, 
                         direction of propagation and frequency of occurrence, were 
                         analyzed in order to understand the wave generation and 
                         propagation schemes. Temperature variability in the stratosphere 
                         observed by CHAMP satellite GPS radio-occultation measurement was 
                         also used to find out a region of high gravity wave activity in 
                         the upper troposphere to stratosphere. It was found that at Cariri 
                         a major part of the observed waves (75 %) has characteristics of 
                         ducting and/or evanescent forms. Only 25 % of them showed the 
                         vertical propagation form from troposphere to mesosphere, and most 
                         of them came from an area of 250 km from the observation site. 
                         These results will be compared with the data from the western 
                         pacific region and presented.",
  conference-location = "Beijing, China",
      conference-year = "2006-07-16",
                label = "self-archiving-INPE-MCTIC-GOV-BR",
             language = "en",
           targetfile = "takahashi_atmospheric.pdf",
        urlaccessdate = "2020, Oct. 23"