@InProceedings{RudorffKampFrou:2013:VaBiAt,
               author = "Rudorff, Nat{\'a}lia de Moraes and Kampel, Milton and Frouin, 
                         Robert",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)}",
                title = "Variabilidade bio-{\'o}ptica no Atl{\^a}ntico Sul Subtropical e 
                         Pac{\'{\i}}fico Sudoeste",
            booktitle = "Anais...",
                 year = "2013",
               editor = "Epiphanio, Jos{\'e} Carlos Neves and Galv{\~a}o, L{\^e}nio 
                         Soares",
                pages = "5840--5847",
         organization = "Simp{\'o}sio Brasileiro de Sensoriamento Remoto, 16. (SBSR)",
            publisher = "Instituto Nacional de Pesquisas Espaciais (INPE)",
              address = "S{\~a}o Jos{\'e} dos Campos",
             abstract = "The chlorophyll-a concentration (Chla) of surface waters can be 
                         retrieved from space using an empirical polynomial function of the 
                         maximum band ratio (MBR), i.e., the maximum ratio of remote 
                         sensing reflectance between blue and green bands. Recent studies 
                         have revealed significant deviations in the relation between MBR 
                         and Chla across the oceans. The present work aimed to access the 
                         main sources of MBR variability across the Sub-tropical South 
                         Atlantic and Southeast Pacific, using in situ data. The data was 
                         collected at 19 bio-optical CTD stations and 40 flow-through 
                         stations during a cruise onboard the R/V Melville, from South 
                         Africa to Chile (February-March, 2011). The MBR was derived from 
                         modeled remote sensing reflectance using absorption and 
                         backscattering measurements. Multivariate analyses were used to 
                         explain the variations with bio-optical properties and 
                         phytoplankton pigments. Chla overestimations were associated to 
                         high specific phytoplankton absorption, specific particle 
                         backscattering coefficient and colored dissolved and particle 
                         organic matter (CDM) absorption normalized by non-water 
                         absorption, and vice-versa. The overestimations occurred at 
                         stations with dominance of small picoplankton, high concentration 
                         of bacteria, and high CDM, while underestimations were in 
                         microplankton dominated waters and low CDM. The results reveal 
                         important relations of the MBR* with the specific coefficient and 
                         associated phytoplankton community structure across the different 
                         biogeographical provinces of the study region.",
  conference-location = "Foz do Igua{\c{c}}u",
      conference-year = "13-18 abr. 2013",
                 isbn = "{978-85-17-00066-9 (Internet)} and {978-85-17-00065-2 (DVD)}",
                label = "1702",
             language = "pt",
         organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                  ibi = "3ERPFQRTRW34M/3E7GMSP",
                  url = "http://urlib.net/ibi/3ERPFQRTRW34M/3E7GMSP",
           targetfile = "p1702.pdf",
                 type = "Hidrologia",
        urlaccessdate = "08 maio 2024"
}