@InProceedings{AndreFerrConf:2004:CiAnOz,
               author = "Andre, Iara Regina Nocentini and Ferreira, Nelson Jesus and 
                         Conforte, Jorge Conrado",
          affiliation = "Instituto Nacional de Pesquisas Espaciais, Centro de Previs{\~a}o 
                         do Tempo e Estudos Clim{\'a}ticos (INPE.CPTEC)",
                title = "Ciclo anual do oz{\^o}nio estratosf{\'e}rico na Am{\'e}rica do 
                         Sul e vizinhan{\c{c}}as e sua variabilidade interanual",
            booktitle = "Anais...",
                 year = "2004",
         organization = "Congresso Brasileiro de Meteorologia, 13.",
            publisher = "SBMET",
             keywords = "Oz{\^o}nio estratosf{\'e}rico, variabilidade interanual, 
                         Am{\'e}rica do Sul.",
             abstract = "Este trabalho analisa a variabilidade do oz{\^o}nio e suas 
                         rela{\c{c}}{\~o}es com a din{\^a}mica estratosf{\'e}rica sobre 
                         a Am{\'e}rica do Sul, utilizando an{\'a}lise harm{\^o}nica das 
                         imagens TOMS do sat{\'e}lite Nimbus-7. As an{\'a}lises 
                         evidenciaram a maximiza{\c{c}}{\~a}o e a minimiza{\c{c}}{\~a}o 
                         da concentra{\c{c}}{\~a}o de oz{\^o}nio na primavera. A 
                         distribui{\c{c}}{\~a}o geral do oz{\^o}nio estratosf{\'e}rico 
                         apresenta maior variabilidade nas altas latitudes e menor sobre as 
                         baixas latitudes. Observou-se que o ciclo anual {\'e} mais 
                         acentuado entre 30°S a 45°S e que o primeiro harm{\^o}nico {\'e} 
                         mais acentuado em setembro. A variabilidade do ciclo anual 
                         apresentou um comportamento distinto em fun{\c{c}}{\~a}o da 
                         latitude, podendo ser identificados tr{\^e}s dom{\'{\i}}nios: 
                         tropical (25°S a 15°N), extratropical (25°S a 52°S) e subpolar 
                         (abaixo de 52°S). Al{\'e}m disso, observou-se que a 
                         oscila{\c{c}}{\~a}o QB est{\'a} praticamente presente em todas 
                         as latitudes, especialmente nos subtr{\'o}picos e latitudes 
                         m{\'e}dias, mostrando uma significativa correla{\c{c}}{\~a}o 
                         entre os padr{\~o}es de circula{\c{c}}{\~a}o do inverno e as 
                         combina{\c{c}}{\~o}es de fases da oscila{\c{c}}{\~a}o QB e os 
                         eventos de El Niño. Palavras-chave: Oz{\^o}nio, ciclo anual, 
                         TOMS. ABSTRACT: This work deals with the annual variability of 
                         ozone and its association with the stratospheric circulation over 
                         South America. The methodology applied involves the use of Fourier 
                         analysis on TOMS (Total Ozone Mapping Spectrometer) images. The 
                         ozone amplitude shows large/small variability at high/low 
                         latitudes and is more prominent in September. The annual cycle 
                         reveals a distinct latitudinal behavior being possible to identify 
                         three main domains: tropical (15oS to 25oS), extratropical (25oS 
                         to 55oS) and subpolar (>55oS). In the first case the amplitudes 
                         are small around 10oS, and the maximization/minimization of first 
                         harmonic occurs during the austral spring/autumn. Within the 
                         extratropical domain, the highest amplitudes are found in middle 
                         latitudes over southeast Pacific Ocean and southwest Atlantic 
                         Oceans and north of 20oN. The variability of the annual ozone 
                         cycle in this region apparently is influenced by the polar vortex. 
                         The amplitudes are relatively smaller around 60oS and between 0 
                         and 120oW where the maximum values occur in the austral spring. 
                         Regarding the interannual variability of the annual cycle, it is 
                         suggested that changes in ozone amplitude due to the 
                         quasi-biannual oscillation is present in all latitudes, 
                         particularly in tropical latitudes where it shows a connection 
                         with El Niño events.",
  conference-location = "Fortaleza",
      conference-year = "29 ago. - 03 set.",
           copyholder = "SID/SCD",
             language = "pt",
         organisation = "SBMET",
           targetfile = "0000000755.doc",
        urlaccessdate = "27 abr. 2024"
}