@ElectronicSource{ValverdeArauCamp::ArNeNe,
abstract = "Statistical downscaling method (SD) intertwined with computational
intelligent techniques for quantitative daily rainfall forecasting
of the SACZ-ULCV weather patterns is proposed in this paper. The
SD precipitation forecasting is achieved first with the support of
artificial neural network (ANN) and latter with fuzzy logic (FL).
The SACZ-ULCV occurs when the cloudiness of the upper level
cyclonic vortices (ULCV) in the Brazilian Northeast meets the
South Atlantic Convergence Zone (SACZ) enhancing convection and
cloudiness over the Southeastern region of Brazil. This weather
pattern is responsible for severe rainfalls and thunderstorms.
Finding out a manner to anticipate the severe rainfall produced by
SACZULCV is of vital importance for alerting, or avoiding
disasters. The daily surface rainfall of the southeastern, in 12
major urban centers over the state of S{\~a}o Paulo, is the
output while the dynamical meteorological variables from ETA
regional model are the inputs. The ETA regional model simulates
the large scale dynamical and thermodynamical behavior of the
SACZ-ULCV weather pattern. For this reason, meteorological
variables from ETA model are used to generate statistical
downscaling for the periods of occurrence of the SACZ-ULCV in
summer from 2000 to 2003. Afterwards, the statistical models are
extended to the entire summer period including, thus, other
weather patterns, beside of SACZ-ULCV, for comparative analysis.
Quantitative daily rainfall forecasting results to events of
SACZ-ULCV had their performance improved when was considered only
the model training for SACZ-ULCV periods. The results confirm that
the rain forecast can be improved when used as predictors
dynamical variables obtained from similar weather patterns. On the
other hand, the using FL or AAN models were efficient techniques
as auxiliary mechanisms for SD. Further, both techniques
accomplished better performance when compared to the ETA
meteorological model forecasting.",
address = "S{\~a}o Jos{\'e} dos Campos",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
author = "Valverde, Maria Cle{\'o}fe and Araujo, Ernesto and Campos Velho,
Haroldo",
keywords = "fuzzy model, artificial neural network, statistical downscaling,
quantitative rainfall forecasting.",
language = "en",
lastupdatedate = "2010-07-13",
publisher = "Instituto and Nacional and de and Pesquisas and Espaciais",
ibi = "8JMKD3MGP7W/37RJRNL",
url = "http://urlib.net/ibi/8JMKD3MGP7W/37RJRNL",
targetfile = "v1.pdf",
title = "artificial neural network and fuzzy logic statistical downscaling
of atmospheric circulation-type specific for rainfall
forecasting",
typeofmedium = "On-line",
urlaccessdate = "27 abr. 2024"
}