@Article{AmorimNetoSatyCorr:2015:SoObCh,
author = "Amorim Neto, Alcides de Castro and Satyamurty, Prakki and
Correira, Francis Wagner",
affiliation = "{Instituto Nacional de Pesquisas Amaz{\^o}nicas (INPA)} and
{Instituto Nacional de Pesquisas Espaciais (INPE)}",
title = "Some observed characteristics of frontal systems in the Amazon
Basin",
journal = "Meteorological Applications",
year = "2015",
volume = "22",
number = "3",
pages = "617--635",
month = "July",
keywords = "forecasting, hydro-meteorology.",
abstract = "The precipitation and the subsequent decline in temperature at
Manaus (3 degrees S, 60 degrees W) associated with strong cold
frontal passages occur 1-3 days after those effects are observed
at SAo Paulo (23 degrees S, 46 degrees S). The average rainfall of
40.4mmday(-1) on the day of frontal passage over the Amazon Basin
is substantially higher than that on the preceding and succeeding
days. The decline in maximum temperature of about 8 degrees C in
48 h is much greater than the decline in minimum temperature (3
degrees C) observed at Manaus. The development of an inverted
trough in the lower troposphere over the continent in the
subtropics strengthens the southerly winds and makes them reach
the Amazon Basin. The extratropical synoptic-scale trough at 925
hPa level, associated with cold front over the Amazon Basin in the
South Atlantic moves from 40 degrees W to 25 degrees W in 2 days.
The vertical westward tilt of the anomalous low is about 12
degrees longitude from 925 hPa to 200 hPa. The rainfall has no
correlation with either the temperature or the decline in
temperature associated with fronts in the Amazon Basin. During
cold frontal events, especially in winter cases, the transport of
moisture from the Amazon Basin to the south is either weak or
absent. The differences between winter and summer cases are large
in terms of precipitation, temperature, wind anomalies and
eastward and northward movements of the synoptic system.",
doi = "10.1002/met.1497",
url = "http://dx.doi.org/10.1002/met.1497",
issn = "1350-4827",
language = "en",
targetfile = "amorim neto_some.pdf",
urlaccessdate = "27 abr. 2024"
}