@Article{RicarteHerdBarb:2014:PaAtCi,
author = "Ricarte, Rita Micheline Dantas and Herdies, Dirceu Luis and
Barbosa, Tatiane Felinto",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)}",
title = "Patterns of atmospheric circulation associated with cold outbreaks
in southern Amazonia",
journal = "Meteorological Applications",
year = "2014",
volume = "10",
pages = "n/a-n/a",
keywords = "Amazon, climate studies, friagem, modelling, verification.",
abstract = "This study is based on climatological records (19792008) of cold
outbreak (friagem) events that occurred in the southern Amazon
region during the austral winter months (May to September). The
friagem events were identified with an objective method that used
climatological data from the surface station of the Department of
Airspace Control (DCEA) in Vilhena city, including the minimum
temperature (Tmin), the pressure reduced to mean sea level (Pmsl)
and the decrease in Tmin (DTmin). The purpose of this study was to
investigate the association between atmospheric circulation and
friagem events using Climate Forecast System Reanalysis (CFSR) and
a composite method. One hundred and forty-four friagem events were
identified with the proposed methodology. These events produced
large changes in weather conditions in Amazonia, including an
abrupt decrease in air temperature, an increase in the amount of
dry air, and an increase in surface pressure. The main atmospheric
features associated with friagem events are an intensification of
high post-frontal surface pressure that is caused by the
intensification of a ridge at middle and high levels when air
approaches the Andes and strong southerly winds at the surface
that carry cold, dry air to tropical latitudes.",
doi = "10.1002/met.1458",
url = "http://dx.doi.org/10.1002/met.1458",
issn = "1350-4827",
label = "lattes: 3752951275341381 2 RicarteHerdBarb:2014:PaAtCi",
language = "en",
urlaccessdate = "27 abr. 2024"
}