@Article{CoelhoUvoAmbr:2002:ExImTr,
author = "Coelho, Caio Augusto dos Santos and Uvo, C. B. and Ambrizzi, T",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE/CPTEC)} and
International Research Institute for Climate Prediction,
Palisades, NY, USA and {Departamento de Ci{\^e}ncias
Atmosf{\'e}ricas Instituto de Astronomia Geof{\'{\i}}sica e
Ci{\^e}ncias Atmosf{\'e}ricas}",
title = "Exploring the impacts of the tropical Pacific SST on the
precipitation patterns over South America during ENSO periods",
journal = "Theoretical and Applied Climatology",
year = "2002",
volume = "71",
number = "3-4",
pages = "185--197",
month = "feb",
keywords = "sea-surface temperature, singular-value decomposition, scale
common features, baiu frontal zone, La-Nina events, El-Nino,
northeast Brazil, statistical-models, oscillation
cycle,anomalies.",
abstract = "Previous studies on precipitarion over South America that strongly
support the existence ok links between precipitation and SST
anomalies in the Pacific Ocean have identified specific regions
where the ENSO signal is particularly strnger.Northeast of Brazil
and some parts of southern South America are examples of these
regions. However, the same attention was not taken to identify
which regions in the Central and East Pacific ocean are better
correlated with the South America precipitation during extreme
ENSO events, and also which are the transition regions of the
precipitation signal over South America during these events.
Coincident periods of ENSO events for both SST over the tropical
Pacific ocean and montlhy precipitation sums from many
observational stations over South America werw selected and
analyzed. Two statistical methods were used for the data analysis:
Singular Value Decomposition (SVD) and Simple Linear Correlation
(SLC). The SVD results for warmer events in the Pacific
corroborate previous ones and also clearly identified a transition
region between the drier conditions in the Northeast of Brasil and
the wetter conditions in the Southeast/South of Brazil. Transition
regions were also determined over Peru and central Amazon. The SLC
results indicated that the SST anomalies in the tropical east
Pacific ocean has the strongest influence in the South American
precipitation during El Niño events. During La Niña events the
central area of the Pacific, around 180º, has shown a more
significant influence.",
issn = "0177-798X",
language = "en",
targetfile = "coelho_uvo_ambrizzi_2002.pdf",
urlaccessdate = "05 jun. 2024"
}