@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 = "13 maio 2024"
}