@InProceedings{PintoTcheLoviChou:2018:ReDePr,
author = "Pinto, Leandro Ferreira Gentile and Tcheou, Michel Pompeu and
Lovisolo, Lisandro and Chou, Sin Chan",
affiliation = "{Universidade Estadual do Rio de Janeiro (UERJ)} and {Universidade
Estadual do Rio de Janeiro (UERJ)} and {Universidade Estadual do
Rio de Janeiro (UERJ)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)}",
title = "Redu{\c{c}}{\~a}o de desvios de previs{\~a}o clim{\'a}tica
usando filtragem adaptativa no dom{\'{\i}}nio da
frequ{\^e}ncia",
booktitle = "Anais...",
year = "2018",
pages = "609--613",
organization = "Simp{\'o}sio Brasileiro de Telecomunica{\c{c}}{\~o}es e
Processamento de Sinais, 36. (SBrT)",
keywords = "Filtragem adaptativa, algoritmo RLS, DCT2D, previs{\~a}o
clim{\'a}tica, Adaptive filtering, RLS algorithm, DCT-2D,
climatic forecast.",
abstract = "Este trabalho aborda o uso de filtros adaptativos no
dom{\'{\i}}nio da frequ{\^e}ncia, via algoritmo RLS (Recursive
Least Squares) e DCT-2D (Two-dimensional Discrete Cosine
Transform), com o objetivo de reduzir desvios de previs{\~a}o
clim{\'a}tica produzidos por um modelo regional clim{\'a}tico.
As previs{\~o}es do modelo regional (modelo Eta) s{\~a}o
comparadas com os dados observados (rean{\'a}lises do NCEP). As
vari{\'a}veis clim{\'a}ticas consideradas s{\~a}o as
componentes zonal e meridional do vento, altura geopotencial e
umidade espec{\'{\i}}fica, produzidas pelo modelo sazonal Eta,
na resolu{\c{c}}{\~a}o espacial de 40 km. Os resultados indicam
que a aplica{\c{c}}{\~a}o proposta {\'e} capaz de reduzir
m{\'e}tricas de desvio, como o erro quadr{\'a}tico m{\'e}dio e
o erro m{\'a}ximo, contribuindo com melhores previs{\~o}es
clim{\'a}ticas. ABSTRACT: This work aims at using adaptive
filters in the frequency domain, through the RLS (Recursive Least
Squares) algorithm and DCT-2D (Two-dimensional Discrete Cosine
Transform), with the objective of reducing deviations of climatic
forecasts produced by a regional climate model. The regional model
predictions (Eta model) are compared with the observed data (NCEP
reanalysis). The climatic variables considered are the zonal and
meridional components of the wind, geopotential height and
specific humidity, produced by the Eta seasonal model, in the
spatial resolution of 40 km. The results indicate that the
proposed application is capable to reduce deviation metrics, such
as the mean square error and the maximum error, contributing to
better climate predictions.",
conference-location = "Campina Grande, PB",
conference-year = "16-19 set.",
label = "lattes: 7112277465715838 2 MaiaLuceSilv:2018:NoArDe",
language = "pt",
targetfile = "pinto_reducao.pdf",
urlaccessdate = "27 abr. 2024"
}