@MastersThesis{Siqueira:2005:MoAcOc,
author = "Siqueira, L{\'e}o San Pedro",
title = "Valida{\c{c}}{\~a}o dos fluxos de calor sobre o Atl{\^a}ntico
tropical: modelo acoplado oceano-atmosfera do CPTEC e
observa{\c{c}}{\~o}es",
school = "Instituto Nacional de Pesquisas Espaciais (INPE)",
year = "2005",
address = "S{\~a}o Jos{\'e} dos Campos",
month = "2005-05-20",
keywords = "meteorologia, intera{\c{c}}{\~a}o oceano-atmosfera, fluxo de
calor, acoplamento, Oceano Atl{\^a}ntico, meteorology, air sea
interactions, heat flux, coupling, Atlantic ocean, modular ocean
model.",
abstract = "Este trabalho tem por objetivo inferir a import{\^a}ncia dos
fluxos de calor, estimados por diversos m{\'e}todos, na
determina{\c{c}}{\~a}o dos campos de Temperatura da
Superf{\'{\i}}cie do Mar (TSM) no Atl{\^a}ntico tropical
utilizando um conjunto de simula{\c{c}}{\~o}es do modelo de
circula{\c{c}}{\~a}o geral dos oceanos Modular Ocean Model
version 3 (MOM3) e uma simula{\c{c}}{\~a}o do modelo acoplado
oceano-atmosfera do CPTEC. Inicialmente s{\~a}o apresentados as
motiva{\c{c}}{\~o}es e objetivos para a realiza{\c{c}}{\~a}o
deste trabalho assim como uma revis{\~a}o bibliogr{\'a}fica
sobre a variabilidade do oceano Atl{\^a}ntico Tropical e sua
influ{\^e}ncia no clima da Am{\'e}rica do Sul. Como resultados
s{\~a}o apresentadas an{\'a}lises comparativas entre as
s{\'e}ries temporais das observa{\c{c}}{\~o}es de
radia{\c{c}}{\~a}o solar das boias Pilot Research Moored Array
in the Tropical Atlantic (PIRATA) e estimativas feitas a partir de
imagens de sat{\'e}lite usando o modelo de transfer{\^e}ncia
radiativa Global Radiation (GL 1.2) desenvolvido no CPTEC e do
modelo baseado nos dados do International Satellite Cloud
Climatology Project (ISCCP) produzidas pela Universidade de
Maryland no programa PATHFINDER, assim como os campos de
rean{\'a}lises do National Centers for Environmetal Prediction
National Center for Atmospheric Research Reanalyses (NCEP-NCAR) e
European Centre for Medium-Range Forecasts European Reanalyses 40
(ECMWF ERA40). Os modelos de transfer{\^e}ncia radiativa,
baseados em imagens de sat{\'e}lite do ISCCP e o modelo GL 1.2
mostraram correla{\c{c}}{\~o}es mais altas com as s{\'e}ries
temporais das boias PIRATA em compara{\c{c}}{\~a}o com os campos
de rean{\'a}lises. Em seguida, {\'e} apresentado o estudo de
simula{\c{c}}{\~o}es num{\'e}ricas oce{\^a}nicas e acoplada,
utilizando campos for{\c{c}}antes din{\^a}micos e
termodin{\^a}micos observados para o modelo de
circula{\c{c}}{\~a}o geral oce{\^a}nica. Por fim {\'e} feita a
compara{\c{c}}{\~a}o entre os campos de fluxo de calor {\`a}
superf{\'{\i}}cie e TSM obtidos de integra{\c{c}}{\~o}es do
modelo oce{\^a}nico MOM3 e da modelagem acoplada sobre o
Atl{\^a}ntico tropical e os dados observados do National Oceanic
\& Atmospheric Administration (NOAA) Optimum Interpolation Sea
Surface Temperature Analysis (OI SST) e fluxos de
superf{\'{\i}}cie do Comprehensive Ocean-Atmosphere Data Set
(COADS). O fluxo total de calor apresentou uma significativa
redu{\c{c}}{\~a}o dos erros para a simula{\c{c}}{\~a}o
utilizando os campos de radia{\c{c}}{\~a}o solar baseado em
estimativas de sat{\'e}lites e/ou fluxos de calor parametrizados.
O modelo acoplado oceano-atmosfera do Centro de Previs{\~a}o de
Tempo e Estudos Clim{\'a}ticos (CPTEC) apresentou erros menores
na TSM e fluxo de calor em compara{\c{c}}{\~a}o com as
simula{\c{c}}{\~o}es oce{\^a}nicas for{\c{c}}adas apenas por
campo de rean{\'a}lises, exceto sobre a bacia central, onde a
maior magnitude dos erros provavelmente est{\'a} relacionada a
defasagens na intensifica{\c{c}}{\~a}o do vento e problemas
relacionados ao transporte de calor na componente oce{\^a}nica.
Na conclus{\~a}o {\'e} feita uma discuss{\~a}o sobre a
an{\'a}lise comparativa e s{\~a}o apresentadas algumas
sugest{\~o}es de pesquisas futuras. ABSTRACT: The goal of this
work is to infer the importance of surface heat fluxes, estimated
by several methods, in the determination of the Sea Surface
Temperature (SST) fields in the tropical Atlantic using a set of
general circulation ocean model Modular Ocean Model 3 (MOM 3)
simulations and a Centro de Previs{\~a}o de Tempo e Estudos
Clim{\'a}ticos (CPTEC) coupled ocean-atmosphere model simulation.
Initially the goals and motivations for the accomplishment of this
work as well as a bibliographical revision about the variability
of the Tropical Atlantic Ocean and its influence in the South
American climate are presented. Comparative analyses between the
observed solar short wave radiation time series of the Pilot
Research Moored Array in the Tropical Atlantic (PIRATA) buoys and
estimatives made from satellite images using the radiative
transfer model Global Radiation version 1.2 (GL1.2) developed at
the CPTEC and the model based on the International Satellite Cloud
Climatology Project (ISCCP) data produced by the University of
Maryland under the PATHFINDER program, as well as the National
Centers for Environmetal Prediction - National Center for
Atmospheric Research Reanalyses (NCEP-NCAR) and European Centre
for Medium-Range Forecasts European Reanalyses 40 (ECMWF ERA40)
reanalyses fields are performed. The radiative transfer models
based on ISCCP imagery and the GL1.2 have shown higher
correlations with the PIRATA buoys time series when comparing with
the reanalysis fields. An oceanic and coupled numerical
simulations study, using observed dynamic and thermodynamic
forcing fields for the general circulation ocean model are also
presented. Finally it is made a comparison between the SST and
surface heat flux fields obtained from the numerical simulations
over the tropical Atlantic and the observed National Oceanic \&
Atmospheric Administration (NOAA) Optimum Interpolation Sea
Surface Temperature Analysis (OI SST) data and Comprehensive
Ocean-Atmosphere Data Set (COADS) surface fluxes. The net heat
flux has shown a significant error reduction for the simulations
using solar radiation fields based on satellite estimates and/or
the heat flux parametrization. The CPTEC coupled oceanatmosphere
model presented smaller error magnitude in SST and heat fluxes
comparing to the oceanic simulation forced by reanalysis fields
only, except over the central basin, where the higher magnitude is
probably related to lags in wind intensification and heat
transport deficiencies in the oceanic component. In the conclusion
a discussion about the comparative analysis is made and some
suggestions of future researches are presented.",
committee = "Satyamurty, Prakki (presidente) and Nobre, Paulo (orientador) and
Bonatti, Jos{\'e} Paulo and Arruda, Wilton Zumpichiatti",
copyholder = "SID/SCD",
englishtitle = "Validation of heat fluxes over the tropical Atlantic: CPTEC
coupled ocean-atmosphere model and observations",
language = "pt",
pages = "181",
ibi = "6qtX3pFwXQZ3r59YD7/H3zPj",
url = "http://urlib.net/ibi/6qtX3pFwXQZ3r59YD7/H3zPj",
targetfile = "paginadeacesso.html",
urlaccessdate = "20 maio 2024"
}