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 
              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/rep/8JMKD3MGP7W/36GKRPS",
           targetfile = "v1.pdf",
                title = "Daytime cloud classification over South America region using 
                         multispectral GOES-8 imagery",
         typeofmedium = "On-line",
        urlaccessdate = "24 jan. 2021"