@TechReport{MarengoCPNBTMSCSCDPC:2001:EnSiIn,
author = "Marengo, Jos{\'e} Antonio and Cavalcanti, Iracema Fonseca de
Albuquerque and Prakki, Satyamurty and Nobre, Carlos Afonso and
Bonatti, Jos{\'e} Paulo and Trosnikov, Igor and Manzi, Antonio
Ocimar and Sampaio, Gilvan and Camargo J{\'u}nior, H{\'e}lio and
Sanches, Marcos Barbosa and Cunningham, Chrstopher Alexander
Castro and D'Almeida, Cassiano and Pezzi, Luciano Ponci and
Calbete, Nuri Oyamburo",
title = "Ensemble simulation of interanual climate variability using the
CPTEC/COLA astmopheric model",
institution = "INPE",
year = "2001",
type = "RPQ",
number = "INPE-8135-RPQ/717",
address = "Sao Jos{\'e} dos Campos",
keywords = "clima, variabilidade, modelos de clima, simulacao, temperatura da
superficie do mar, modelos de circulacao geral atmosf{\'e}rica,
climate, variability, climate models, simulation, sea surface
temperature, atmospheric general circulation models.",
abstract = "A variabilidade clim{\'a}tica interanual do MCG atmosf{\'e}rico
do CPTEC/COLA {\'e} avaliada para diversas regi{\~o}es dos
tr{\'o}picos e extratr{\'o}picos. A avalia{\c{c}}{\~a}o foi
feita para o per{\'{\i}}odo 1982-91 com uma rodada de 9 membros
do modelo for{\c{c}}ado pelas anomalias de temperatura da
superf{\'{\i}}cie (TSM)do mar observadas de todo o globo. 0
Brier Skill Score {\'e} usado para avaliar a
precipita{\c{c}}{\~a}o simulada pelo modelo para diversas
regi{\~o}es da Am{\'e}rica do Sul, {\'A}frica e {\'A}sia
durante o pico de suas esta{\c{c}}{\~o}es chuvosas. A
variabilidade clim{\'a}tica interanual no Nordeste do Brasil,
Amaz{\^o}nia, e sul da Argentina-Uruguai e em menor grau para a
precipita{\c{c}}{\~a}o para o Sahel e leste da {\'A}frica foram
bem simuladas pelo modelo. O modelo exibe menor skill quando
reproduz a variabilidade interanual da precipita{\c{c}}{\~a}o
nas regi{\~o}es das mon{\c{c}}{\~o}es do globo e sul da
{\'A}frica, indicando que a simula{\c{c}}{\~a}o das
varia{\c{c}}{\~o}es interanuais do clima nestas regi{\~o}es
ainda s{\~a}o problem{\'a}ticas, possivelmente devido ao efeito
de feedback da umidade do solo e da neve, que indicaria o
importante papel da variabilidade clim{\'a}tica interna nestas
regi{\~o}es, al{\'e}m da for{\c{c}}ante externa SST na
variabilidade clim{\'a}tica. 0 modelo captura bem os conhecidos
sinais das anomalias de precipita{\c{c}}{\~a}o e
circula{\c{c}}{\~a}o do El Ni¤o de 1982-83, indicando sua
sensibilidade a uma forte for{\c{c}}ante externa, enquanto que em
anos normais, a variabilidade clim{\'a}tica interna pode afetar a
previsibilidade do clima em algumas regi{\~o}es, especialmente as
{\'a}reas de mon{\c{c}}{\~o}es do globo. ABSTRACT: The
interannual climate variability of the CPTEC/COLA Atmospheric GCM
is assessed for several regions of the tropics and extratropics.
The evaluation is made for the period 1982-91 for an ensemble run
of 9 realizations of the model forced by observed global sea
surface temperature (SST)anomalies. The Brier Skill Score is used
to assess the precipitation simulated by the model for several
regions of South America, Africa and Asia during the peak of their
rainy seasons. Interannual climate variability in Northeast
Brazil, Amazonia, and southern Argentina-Uruguay and to a lesser
degree for Sahel and Eastern Africa rainfall are well simulated by
the model. The model exhibits lower skill in reproducing
interannual rainfall variability in the monsoon regions of world
and southern Africa, indicating that simulation on interannual
variations of climate in those regions still remains problematic,
possibly due to the effect of land-surface moisture and snow
feedbacks that would indicate the important role of internal
climate variability in those regions, besides the SST external
forcing. The model captures the well known signatures of rainfall
and circulation anomalies of El Ni¤o 1982-83, indicating its
sensitivity to strong external forcing, while in normal years, the
internal climate variability can affect the predictability of
climate in some regions, especially the monsoon areas of the
world.",
label = "6060",
pages = "77",
ibi = "6qtX3pFwXQZ3r59YCT/H37FM",
url = "http://urlib.net/ibi/6qtX3pFwXQZ3r59YCT/H37FM",
targetfile = "INPE-8135.pdf",
urlaccessdate = "12 maio 2024"
}