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@Article{BittencourtPiBaBeStVa:2019:InBeAt,
               author = "Bittencourt, Gabriela Dornelles and Pinheiro, Damaris Kirsch and 
                         Bageston, Jos{\'e} Valentin and Bencherif, Hassan and Steffenel, 
                         Luis Angelo and Vaz Peres, Lucas",
          affiliation = "{Universidade Federal de Santa Maria (UFSM)} and {Universidade 
                         Federal de Santa Maria (UFSM)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {University of Reunion Island} and 
                         {Universit{\'e} de Reims Champagne-Ardenne} and {Universidade 
                         Federal do Oeste do Par{\'a} (UFOPA)}",
                title = "Investigation of the behavior of the atmospheric dynamics during 
                         occurrences of the ozone hole’s secondary effect in southern 
                         Brazil",
              journal = "Annales Geophysicae",
                 year = "2019",
               volume = "37",
               number = "6",
                pages = "1049--1061",
                month = "Nov.",
             abstract = "The Antarctic ozone hole (AOH) directly influences the Antarctic 
                         region, where its levels can reach values below 220 DU. The 
                         temporary depletion of ozone in Antarctica generally occurs 
                         between the beginning and middle of August, during the austral 
                         spring, and extends to November, when a temporary reduction in 
                         ozone content is observed in a large region over the Antarctic 
                         continent. However, masses of ozone-depleted air can break away 
                         from the ozone hole and reach mid-latitude regions in a phenomenon 
                         known as the secondary effect of the Antarctic ozone hole. The 
                         objective of this paper is to show how atmospheric dynamics behave 
                         during the occurrence of this type of event, especially in 
                         mid-latitude regions, such as southern Brazil, over a 12- year 
                         observation period. For the analysis and identification of the 
                         events of influence of the AOH on the southern region of Brazil, 
                         data from the total ozone column were used from ground-based and 
                         satellite experiments, the Brewer Spectrophotometer (MkIII no. 
                         167), and the Ozone Monitoring Instrument (OMI) on the Aura 
                         satellite. For the analysis of the stratospheric and tropospheric 
                         fields, the ECMWF reanalysis products were used. Thus, 37 events 
                         of influence of the AOH that reached the southern region of Brazil 
                         were identified for the study period (20062017), where the events 
                         showed that in approximately 70 % of the cases they occurred after 
                         the passage of frontal systems and/or atmospheric blocks over 
                         southern Brazil. In addition, the statistical analysis showed a 
                         strong influence of the jet stream on mid-latitude regions during 
                         the events. Among the 37 identified events, 92 % occurred in the 
                         presence of the subtropical and/or polar jet stream over the 
                         region of study, possibly explaining the exchange of air masses of 
                         ozone deficient in the upper tropospherelower stratosphere (UTLS) 
                         region.",
                  doi = "10.5194/angeo-37-1049-2019",
                  url = "http://dx.doi.org/10.5194/angeo-37-1049-2019",
                 issn = "0992-7689",
             language = "en",
           targetfile = "bittencourt_investigation.pdf",
        urlaccessdate = "22 abr. 2021"
}


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