@ElectronicSource{RossatoAlvaFerrToma::EvEsBr,
             abstract = "The purpose of this study is to analyze the monthly mean spatial 
                         and temporal distribution of evapotranspiration (ET) during the 
                         1981-2000 period in Brazil using remotely sensed data. The 
                         methodology involves the use of a relationship between ET and 
                         Normalized Difference Vegetation Index (NDVI). ET was estimated 
                         for the main Brazilian biomes through the Penman-Monteith method 
                         using climatological data from 194 Brazilian meteorological 
                         stations during the 1961-1990 period. NDVI data for the July 1981 
                         to July 2000 period was obtained from Advanced Very High 
                         Resolution Radiometer (AVHRR) sensor on board the NOAA satellite. 
                         A relatively high correlation coefficient between ET and NDVI 
                         (r=0.81) was found, showing a near linear relationship involving 
                         these variables. Also, the monthly mean ET over Brazil was 
                         estimated using NDVI data. The results showed that the ET rate in 
                         the Amazon region is not well defined because the maximum values 
                         occur after the rainy season, while for the Northeast Brazil, the 
                         highest ET values occur in according to period of rainy season. 
                         The annual cycle of ET is most defined in the Central region, with 
                         maximum values occurring in January to May period and minimum in 
                         September. In the South and Southeast regions, the annual cycle ET 
                         does not change very much. Finally, this study suggests that NDVI 
                         is an important variable for indirectly monitoring ET over large 
                         areas, thus with great potential for agronomical and climatic 
                         applications.",
              address = "S{\~a}o Jos{\'e} dos Campos",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Sao Jose 
                         dos Campos - 12227-010-Sp-Brasil}",
               author = "Rossato, Luciana and Alvala, Regina Celia dos Santos and Ferreira, 
                         Nelson Jesus and Tomasella, Javier",
             keywords = "evapotranspiration, normalized difference vegetation index, AVHRR 
                         sensor.",
             language = "English",
       lastupdatedate = "2005-09-17",
                 note = "International Symposium Remote Sensing, 12 th",
            publisher = "Instituto and Nacional and de and Pesquisas and Espaciais",
                  ibi = "6qtX3pFwXQZQjxQKY/HucDL",
                  url = "http://urlib.net/ibi/6qtX3pFwXQZQjxQKY/HucDL",
           targetfile = "v1.pdf",
                title = "Evapotranspiration estimation in the Brazil using NDVI data",
         typeofmedium = "On-line",
        urlaccessdate = "27 abr. 2024"
}