@InProceedings{WagnerBredVerbArag:2015:CoSuGe,
               author = "Wagner, Fabien Hubert and Brede, Benjamin and Verbesselt, Jan and 
                         Arag{\~a}o, Luiz Eduardo Oliveira e Cruz de",
          affiliation = "{} and {} and {} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)}",
                title = "Correction of sun-sensor geometry effects from MODIS MCD43A1 
                         product for tropical forest applications",
            booktitle = "Anais...",
                 year = "2015",
               editor = "Gherardi, Douglas Francisco Marcolino and Arag{\~a}o, Luiz 
                         Eduardo Oliveira e Cruz de",
                pages = "1097--1104",
         organization = "Simp{\'o}sio Brasileiro de Sensoriamento Remoto, 17. (SBSR)",
            publisher = "Instituto Nacional de Pesquisas Espaciais (INPE)",
              address = "S{\~a}o Jos{\'e} dos Campos",
             abstract = "Tropical forests have an important role in the terrestrial carbon 
                         (C) cycle. In the current context of atmospheric CO2 increase, 
                         understanding how the forest react and feedback to this CO2 
                         increase is an urgent need. The production of leaves is an 
                         important part of the carbon cycle of tropical forest and is 
                         poorly known due to the difficulty of direct measurements. 
                         Vegetation indices from remote sensing represent an interesting 
                         tools to study this process. However, recent studies have 
                         highlight that the variations of EVI is largely due to sun-sensor 
                         geometry in tropical latitudes. This article describes how to 
                         corrected reflectance for the sun-sensor geometry artefacts, a 
                         current prequisite to the computation of vegetation indices. We 
                         describe the step-by-step procedure to correct reflectances and to 
                         obtain corrected vegetation indices with the MODIS MCD43A1 and 
                         MCD43A2 product suite. Subsequently with give a pratical example 
                         of application in a tropical forest of French Guiana. Our results 
                         show that despite constant cloudy conditions, EVI corrected 
                         estimation is feasible considering a sufficient area of forest. 
                         Corrected EVI show a seasonal pattern unrelated with sun-sensor 
                         geometry. Based on field data of litterfall, we show that 
                         corrected EVI reflects the pattern of leaf production. 
                         Subsequently, we encourage to use EVI corrected for sun-sensor 
                         geometry to follow leaf phenology in tropical forests.",
  conference-location = "Jo{\~a}o Pessoa",
      conference-year = "25-29 abr. 2015",
                 isbn = "978-85-17-0076-8",
                label = "204",
             language = "en",
         organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                  ibi = "8JMKD3MGP6W34M/3JM47NR",
                  url = "http://urlib.net/ibi/8JMKD3MGP6W34M/3JM47NR",
           targetfile = "p0204.pdf",
                 type = "An{\'a}lise de s{\'e}ries de tempo de imagens de sat{\'e}lite",
        urlaccessdate = "27 abr. 2024"
}