author = "Egito, Fabio and Takahashi, Hisao and Miyoshi, Yasunobu",
          affiliation = "{Universidade Federal do Oeste da Bahia} and {Instituto Nacional 
                         de Pesquisas Espaciais (INPE)} and {Kyushu University}",
                title = "Effects of the planetary waves on the MLT airglow",
              journal = "Annales Geophysicae",
                 year = "2017",
               volume = "35",
               number = "5",
                pages = "1023--1032",
                month = "Aug.",
             keywords = "Atmospheric composition and structure (airglow and aurora), middle 
                         atmosphere, composition and chemistry, meteorology and atmospheric 
                         dynamics, waves and tides.",
             abstract = "The planetary-wave-induced airglow variability in the mesosphere 
                         and lower thermosphere (MLT) is investigated using simulations 
                         with the general circulation model (GCM) of Kyushu University. The 
                         model capabilities enable us to simulate the MLT OI557.7 nm, 
                         O(2)b(0-1), and OH(6-2) emissions. The simulations were performed 
                         for the lowerboundary meteorological conditions of 2005. The 
                         spectral analysis reveals that at middle latitudes, oscillations 
                         of the emission rates with the period of 2-20 days appear 
                         throughout the year. The 2-day oscillations are prominent in the 
                         summer and the 5-, 10-, and 16-day oscillations dominate from the 
                         autumn to spring equinoxes. The maximal amplitude of the 
                         variations induced by the planetary waves was 34% in OI557.7 nm, 
                         17% in O(2)b(0-1), and 8% in OH(6-2). The results were compared to 
                         those observed in the middle latitudes. The GCM simulations also 
                         enabled us to investigate vertical transport processes and their 
                         effects on the emission layers. The vertical transport of atomic 
                         oxygen exhibits similar periodic variations to those observed in 
                         the emission layers induced by the planetary waves. The results 
                         also show that the vertical advection of atomic oxygen due to the 
                         wave motion is an important factor in the signatures of the 
                         planetary waves in the emission rates.",
                  doi = "10.5194/angeo-35-1023-2017",
                  url = "http://dx.doi.org/10.5194/angeo-35-1023-2017",
                 issn = "0992-7689",
             language = "en",
           targetfile = "egito_effects.pdf",
        urlaccessdate = "04 dez. 2020"