@MastersThesis{Garcia:2006:ReOsDe,
author = "Garcia, S{\^a}mia Regina",
title = "Variabilidade do sistema de mon{\c{c}}{\~a}o da Am{\'e}rica do
Sul: rela{\c{c}}{\~o}es com a oscila{\c{c}}{\~a}o decadal do
pac{\'{\i}}fico",
school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
year = "2006",
address = "S{\~a}o Jos{\'e} dos Campos",
month = "2006-02-21",
keywords = "clima, variabilidade, mon{\c{c}}{\~o}es, oscila{\c{c}}{\~a}o,
Oceano Pac{\'{\i}}fico, El Niño, oscila{\c{c}}{\~a}o sul,
fun{\c{c}}{\~o}es ortogonais, climate, variability, monsoons,
oscilation, Pacific Ocean, southern oscilation, orthogonal
functions.",
abstract = "O principal objetivo deste trabalho foi analisar a variabilidade
clim{\'a}tica do Sistema de Mon{\c{c}}{\~a}o da Am{\'e}rica do
Sul (SMAS), assim como suas rela{\c{c}}{\~o}es com as fases da
Oscila{\c{c}}{\~a}o Decadal do Pac{\'{\i}}fico (ODP) e
investigar as rela{\c{c}}{\~o}es deste sistema com os demais
sistemas de mon{\c{c}}{\~a}o. A t{\'e}cnica de
Fun{\c{c}}{\~o}es Ortogonais Emp{\'{\i}}ricas (FOE) foi
aplicada no campo de anomalias do desvio da m{\'e}dia anual do
desvio da m{\'e}dia zonal do potencial de velocidade (X*') no
n{\'{\i}}vel de 200hPa do per{\'{\i}}odo de 1948-1999 para
investigar as caracter{\'{\i}}sticas de tal variabilidade. Foram
utilizados dados m{\'e}dios mensais de temperatura da
superf{\'{\i}}cie do mar, temperatura do ar, press{\~a}o ao
n{\'{\i}}vel do mar, velocidade vertical em 500hPa, {\'a}gua
precipit{\'a}vel e fun{\c{c}}{\~a}o de corrente em 200hPa. Com
essas vari{\'a}veis, foram feitas an{\'a}lises de compostos, em
que os casos inclu{\'{\i}}dos foram selecionados usando o valor
lim{\'{\i}}trofe de mais ou menos 0,5 desvio padr{\~a}o das
componentes principais dos dois primeiros modos da an{\'a}lise de
FOE de X*' em 200hPa para a Am{\'e}rica do Sul. Atrav{\'e}s da
an{\'a}lise de compostos foi poss{\'{\i}}vel inferir que o modo
dominante dessa an{\'a}lise descreve a variabilidade multidecadal
do SMAS associada a padr{\~o}es caracter{\'{\i}}sticos da ODP,
e que o segundo modo ilustra a variabilidade interanual associada
ao El Niño/Oscila{\c{c}}{\~a}o Sul. A an{\'a}lise de FOE de X*'
em 200hPa para a banda global mostra que o SMAS est{\'a}
relacionado com o sistema de mon{\c{c}}{\~a}o do leste da
{\'A}sia na escala de tempo multidecadal e que o sistema de
mon{\c{c}}{\~a}o da Am{\'e}rica do Norte e o sistema de
mon{\c{c}}{\~a}o da {\'{\I}}ndia est{\~a}o relacionados na
escala de tempo interanual. ABSTRACT: The main objective of the
present work was to analyze the South American Monsoon System
(SAMS) variability, and its relation to the Pacific Decadal
Oscillation (PDO) phases. The relations of SAMS with other monsoon
systems were also investigated. In order to investigate this
variability, monthly anomalies of the deviation from the annual
mean of the zonal deviation field of the velocity potential (X*')
at 200hPa for the 1948-1999 period were subjected to the Empirical
Orthogonal Function analysis. Additional monthly data of the sea
surface temperature, surface air temperature, sea level pressure,
vertical velocity at 500hPa, precipitable water and streamfunction
at 200hPa were also used. Anomaly composites of these variables
were obtained in near global areas using the cases selected for
threshold of ±0.5 standard deviations of the principal components
of the first two EOF modes of the analysis of X*' at 200hPa in
South America. The dominant mode of this analysis describes the
PDO related multi-decadal variability of the SAMS, while the
second mode illustrates the El Niño/Southern Oscillation (ENSO)
related interannual variability. The EOF analysis of X*' at 200hPa
in the global band shows that the SAMS and the East Asia monsoon
system are related each other in the multi-decadal scale, and the
North America monsoon and the Indian monsoon systems are related
in the interannual scale.",
committee = "Sansigolo, Cl{\'o}vis Angeli (presidente) and Kayano, Mary Toshie
(orientadora) and Rao, Vadlamudi Brahmananda and Dias, Pedro Leite
da Silva",
copyholder = "SID/SCD",
englishtitle = "South american monsoon system variability: relations to the
pacific decadal oscillation",
language = "pt",
pages = "142",
ibi = "6qtX3pFwXQZGivnJSY/KxCDs",
url = "http://urlib.net/ibi/6qtX3pFwXQZGivnJSY/KxCDs",
targetfile = "publicacao.pdf",
urlaccessdate = "16 jun. 2024"
}