@Article{FreitasCasLinCarMac:2019:StTrRe,
author = "Freitas, Rose Ane Pereira de and Casagrande, Fernanda and
Lindemann, Douglas da Silva and Cardoso, Maria Ang{\'e}lica
Gon{\c{c}}alves and Machado, Jeferson Prietsch",
affiliation = "{Universidade Federal de Pelotas (UFPel)} and {Instituto Nacional
de Pesquisas Espaciais (INPE)} and {Universidade Federal de
Pelotas (UFPel)} and {Universidade Federal de Santa Maria (UFSM)}
and {Universidade Federal do Rio Grande (FURG)}",
title = "The storm tracks response to changes in atmospheric greenhouse gas
concentration at the south of Brazil and southwest Atlantic
Ocean",
journal = "Atmospheric and Climate Sciences",
year = "2019",
volume = "9",
number = "4",
pages = "545--557",
keywords = "Storm Tracks, Confluence Brazil-Malvinas, Atlantic Ocean.",
abstract = "Here we investigate the ocean-atmosphere coupling and the
contribution of the Sea Surface Temperature (SST) variations in:
1) Brazil-Malvinas Confluence (BMC) region, 2) Southwest Atlantic
Ocean and 3) Southern Brazil. Numerical simulations of the
ECHAM5/MPI-OM coupled ocean-atmosphere model were used to analyze
the changes in the seasonal trajectory of the extratropical
cyclones, in terms of intensification of physical mechanisms and
implications for future scenarios. The numerical experiment for
the future scenario considered an atmospheric CO2 concentration of
approximately 770 ppm, which represents an increment of more than
350 ppm over the current values recorded by the Mauna Loa
reference station. For this scenario, the results indicated a
Storm Tracks (ST) displacement of 5\˚ latitude toward south
and changes of the meridional transport of sensible heat, close to
50\˚S. The increase in SST induces ST intensification and
consequently an increase in the occurrence of extratropical
cyclones. Overall, in the BMC region, we found a change in the
pattern of cyclogenetic activity occurrence, with less frequent,
but more intense events. On the Southern Brazilian region, the
results of this study indicate increases in rainfall during summer
months, whereas, a decrease in frequency and an increase in
intensity were found for wintertime. We suggest that these changes
could impact the climate dynamic of the Brazilian South coast,
with a magnitude yet unknown.",
doi = "10.4236/acs.2019.94035",
url = "http://dx.doi.org/10.4236/acs.2019.94035",
issn = "2160-0414",
language = "en",
targetfile = "freitas_storm.pdf",
urlaccessdate = "21 maio 2024"
}