@Article{SilvaCarNovJorBar:2020:UsOpAb,
               author = "Silva, Maria Paula da and Carvalho, Lino Augusto Sander de and 
                         Novo, Evlyn M{\'a}rcia Le{\~a}o de Moraes and Jorge, Daniel 
                         Schaffer Ferreira and Barbosa, Cl{\'a}udio Clemente Faria",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)}",
                title = "Use of optical absorption indices to assess seasonal variability 
                         of dissolved organic matter in Amazon floodplain lakes",
              journal = "Biogeosciences",
                 year = "2020",
               volume = "17",
               number = "21",
                pages = "5355--5364",
                month = "Nov.",
             abstract = "Given the importance of dissolved organic matter (DOM) in the 
                         carbon cycling of aquatic ecosystems, information on its seasonal 
                         variability is crucial. In this study we assess the use of optical 
                         absorption indices available in the literature based on in situ 
                         data to both characterize the seasonal variability of DOM in a 
                         highly complex environment and for application in large-scale 
                         studies using remote sensing data. The study area comprises four 
                         lakes located in the Mamirau{\'a} Sustainable Development Reserve 
                         (MSDR). Samples for the determination of colored dissolved organic 
                         matter (CDOM) and measurements of remote sensing reflectance (Rrs) 
                         were acquired in situ. The Rrs was used to simulate the response 
                         of the visible bands of the Sentinel-2 MultiSpectral Instrument 
                         (MSI), which was used in the proposed models. Differences between 
                         lakes were tested using the CDOM indices. The results highlight 
                         the role of the flood pulse in the DOM dynamics at the floodplain 
                         lakes. The validation results show that the use of the absorption 
                         coefficient of CDOM (aCDOM) as a proxy of the spectral slope 
                         between 275 and 295 nm (S275295) during rising water is 
                         worthwhile, demonstrating its potential application to Sentinel-2 
                         MSI imagery data for studying DOM dynamics on the large scale.",
                  doi = "10.5194/bg-17-5355-2020",
                  url = "http://dx.doi.org/10.5194/bg-17-5355-2020",
                 issn = "1726-4170",
             language = "en",
           targetfile = "silva_use.pdf",
        urlaccessdate = "2024, Apr. 16"
}