@ElectronicSource{BottinoCeba::DaClCl,
abstract = "Abstract. Information about a minimal set of characteristic
variables and types of scene was searched for GOES 8 Imager
multispectral imagery over an extended area of South America,
September 2002, 1600 UTC (near local noon over most part of the
area). Thirteen variables were considered for each pixel: five of
them described reflectance and brightness temperature in 4
channels, three variables assessed temperature difference related
to channel 4; finally, five variables assessed local homogeneity
(texture) in each channel. Thirty-two clusters were determined by
a classification scheme (dynamic cluster) based on minimal
Euclidean distance. Factor analysis in principal components
applied to cluster centroids shows that only five variables might
be taken as non-redundant, namely reflectance in channel 1 and
brightness temperature in channel 4 as well as their textures,
together with difference between channels 5 and 4. Although factor
analysis suggests to define about seven clusters (which in turn
are consistent with image nephanalysis), principal components
analysis makes evident that an objective minimal number of scenes
is actually loosely defined but provides some useful criterions
for definition of proper centroids, depending on users
convenience.",
address = "S{\~a}o Jos{\'e} dos Campos",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)}",
author = "Bottino, Marcus Jorge and Ceballos, Juan Carlos",
keywords = "*.",
language = "en",
lastupdatedate = "2009-12-04",
publisher = "Instituto and Nacional and de and Pesquisas and Espaciais",
ibi = "8JMKD3MGP7W/36GKRPS",
url = "http://urlib.net/ibi/8JMKD3MGP7W/36GKRPS",
targetfile = "v1.pdf",
title = "Daytime cloud classification over South America region using
multispectral GOES-8 imagery",
typeofmedium = "On-line",
urlaccessdate = "08 maio 2024"
}