@InProceedings{AndrioliBPSXYJCLC:2019:ChSoPo,
               author = "Andrioli, V{\^a}nia F{\'a}tima and Batista, Paulo Prado and 
                         Pimenta, Alexandre Alvares and Savio, S. and Xu, J. and Yang, G. 
                         and Jing, J. and Cheng, X. and Liu, Z. and Chi, W.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {China-Brazil Joint Laboratory for 
                         Space Weather} and Center for Space Science and Applied Research, 
                         State Key Laboratory of Space Weather and Center for Space Science 
                         and Applied Research, State Key Laboratory of Space Weather and 
                         Center for Space Science and Applied Research, State Key 
                         Laboratory of Space Weather and {Wuhan Institute of Physics and 
                         Mathematics} and Center for Space Science and Applied Research, 
                         State Key Laboratory of Space Weather and {State Key Laboratory of 
                         Space Weather}",
                title = "Characteristics of Sodium and Potassium layers simultaneously 
                         observed in low latitude of Southern Hemisphere",
                 year = "2019",
         organization = "IUGG General Assembly, 27.",
             abstract = "The mesospheric Sodium and Potassium densities have been obtained 
                         simultaneously by a dual beam LIDAR since November 2016, at 
                         S{\~a}o Jos{\'e} dos Campos (23° S, 46°W). We have analyzed more 
                         than a thousand hours of observation in order to compare the 
                         characteristics of these two alkali metals layers. Semiannual 
                         variations are observed in both layers; however, they present 
                         different maxima location. Sodium density presents its maxima 
                         during the equinoxes; on the other hand, Potassium shows a strong 
                         maximum around July and a weaker one around December. Hence, the 
                         Potassium layer presents also an annual variation not seen in the 
                         Sodium. The centroid height for both metal layers varies little 
                         through the year, with the K layer being on average 1.3 km lower. 
                         The different seasonal variation of the K layer in comparison with 
                         Na, together with the interesting fact that the meteor ablation 
                         has not a dominant influence on the seasonal behavior of the metal 
                         layers, calls our attention for the importance of better 
                         world-wide coverage of instruments able to monitor these elements 
                         to help our understanding of chemical and dynamics in the 
                         mesopause region.",
  conference-location = "Montr{\'e}al, Canada",
      conference-year = "08-18 July",
        urlaccessdate = "25 abr. 2024"
}