@Article{SantosKamp:2018:EvPhAv,
               author = "Santos, Jo{\~a}o Felipe Cardoso dos and Kampel, Milton",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)}",
                title = "Evaluation of Photosynthetically Available Radiation Algorithm in 
                         the Southeastern Brazilian Margin",
              journal = "Journal of Coastal Zone Management",
                 year = "2018",
               volume = "21",
               number = "2",
                pages = "e1000461",
             keywords = "Sea surface irradiance, SeaWiFS, MODIS, MERIS, Generalized linear 
                         model.",
             abstract = "Photosynthetically available radiation (PAR) comprises the 
                         integrated irradiance between 400700 nm which reaches the sea 
                         surface. Its importance in the marine environment is directly 
                         related to primary productivity, which uses light in the 
                         atmospheric carbon assimilation reactions. The algorithm for 
                         estimating PAR with SeaWiFS, MODIS and MERIS data was evaluated in 
                         relation to in situ measurements during the summer and winter of 
                         2001 and 2002. Statistical analyses indicated a systematic error 
                         with all three sensors estimates overestimating the in situ 
                         measurements with a bias equal to 1.63, 1.53 and 1.64 Einstein m-2 
                         d -1 and a percentage error equal to 3.95%, 4.13% and 4.54%, 
                         respectively for SeaWiFS, MODIS and MERIS. A Generalized Linear 
                         Model (GLM) was adjusted for all sensors decreasing bias and 
                         percentage error to values close to zero. The best performance 
                         after adjusting was observed with MODIS data followed by SeaWiFS 
                         and MERIS, consecutively. Overall, the satellite estimations of 
                         PAR showed a good correlation with the in situ measurements and 
                         the linear adjustments corrected the observed systematic error.",
                  doi = "10.4172/2473-3350.1000461",
                  url = "http://dx.doi.org/10.4172/2473-3350.1000461",
                 issn = "2473-3350",
             language = "en",
           targetfile = "santos_evaluation.pdf",
        urlaccessdate = "02 maio 2024"
}