author = "Fechine, Joaquim and Wrasse, Cristiano Max and Takahashi, Hisao 
                         and Mlynczak, M. G. and Russell, J. M.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and 
                         {Universidade do Vale do Para{\'{\i}}ba (UNIVAP)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and Atmospheric Sciences 
                         Division, NASA Langley Research Center and {Center for Atmospheric 
                title = "Lower-mesospheric inversion layers over brazilian equatorial 
                         region using TIMED/SABER temperature profiles",
              journal = "Advances in Space Research",
                 year = "2008",
               volume = "41",
               number = "9",
                pages = "1447--1453",
             keywords = "Mesospheric inversion layer, Atmospheric thermal structure, Middle 
                         atmosphere, Remote sensing.",
             abstract = "Lower-mesospheric inversion layers (MILs) were studied using the 
                         temperature profiles observed by TIMED/SABER over Cariri (7.5S, 
                         36.5W), Brazil, in 2005. A total 175 MILs were identified with 
                         the maximum occurrence in April and October and the minimum in 
                         January and July. The lower MIL is located in a height region from 
                         70 to 90 km, with the peak at around 83  4 km with the 
                         temperature of 205  5 K, and the thickness of 410 km. The results 
                         show large amplitudes of MILs during equinoxes and minimum in 
                         solstices, with a clear semiannual variation. A general feature of 
                         lower MIL in monthly mean profile was observed twice a year, one 
                         from February to May, and the other from August to October with a 
                         downward shift of the top level. These results suggest that 
                         formation and long persistence of MIL is an important factor to 
                         investigate propagation of atmospheric gravity waves in the 
                         mesosphere-lower thermosphere (MLT) region.",
                  doi = "10.1016/j.asr.2007.04.070",
                  url = "http://dx.doi.org/10.1016/j.asr.2007.04.070",
                 issn = "0273-1177",
             language = "en",
           targetfile = "lower mesospheric.pdf",
        urlaccessdate = "26 jan. 2021"