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@Article{FreitasKampLore:2017:ExCoSu,
               author = "Freitas, Lucas Barbedo de and Kampel, Milton and Lorenzzetti, 
                         Jo{\~a}o Ant{\^o}nio",
          affiliation = "{Universit{\'e} du Qu{\'e}bec {\`a} Rimouski} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Fei{\c{c}}{\~o}es oceanogr{\'a}ficas em imagens MODIS na 
                         condi{\c{c}}{\~a}o de sunglint: exemplos para a costa sudeste 
                         brasileira",
              journal = "Revista Brasileira de Meteorologia",
                 year = "2017",
               volume = "32",
               number = "3",
                pages = "321--341",
             keywords = "reflexo do disco solar na superf{\'{\i}}cie do mar, rugosidade 
                         da superf{\'{\i}}cie do mar, filmes minerais e biog{\^e}nicos, 
                         ondas internas solit{\'a}rias, intera{\c{c}}{\~a}o 
                         oceano-atmosfera, solar disk reflected by the ocean, sea surface 
                         roughness, biogenic and mineral films, internal solitary waves, 
                         air-sea interactions.",
             abstract = "Imagens {\'o}pticas e no infravermelho-pr{\'o}ximo adquiridas 
                         por sensores remotos em condi{\c{c}}{\~a}o de reflex{\~a}o 
                         especular bidirecional entre o sol, a superf{\'{\i}}cie do mar e 
                         o sensor (condi{\c{c}}{\~a}o de sunglint) podem ser utilizadas 
                         para identificar filmes, fei{\c{c}}{\~o}es, processos 
                         oceanogr{\'a}ficos e meteorol{\'o}gicos atuantes sobre a 
                         superf{\'{\i}}cie marinha. Imagens do sensor orbital Moderate 
                         Resolution Imaging Spectroradiometer (MODIS) em 
                         condi{\c{c}}{\~a}o de sunglint na plataforma continental sudeste 
                         brasileira foram processadas e analisadas, permitindo identificar 
                         fei{\c{c}}{\~o}es como a borda Oeste da Corrente do Brasil, 
                         meandramentos e v{\'o}rtices de mesoescala, ondas internas 
                         solit{\'a}rias, rolos atmosf{\'e}ricos e filmes superficiais de 
                         origem biog{\^e}nica e mineral. Uma corre{\c{c}}{\~a}o 
                         atmosf{\'e}rica mais apropriada para detec{\c{c}}{\~a}o de 
                         fei{\c{c}}{\~o}es no sunglint {\'e} aprensentada, assim como, 
                         detalhes sobre a geometria de aquisi{\c{c}}{\~a}o. A 
                         depend{\^e}ncia geom{\'e}trica do sunglint torna sua 
                         ocorr{\^e}ncia mais favor{\'a}vel entre outubro e fevereiro na 
                         regi{\~a}o de estudo quando ocorrem z{\^e}nites solares mais 
                         prop{\'{\i}}cios. Os mecanismos e processos que permitem 
                         identificar estas fei{\c{c}}{\~o}es no sunglint foram descritos 
                         e ilustrados. A partir deste entendimento, as complexas 
                         fei{\c{c}}{\~o}es identificadas podem ser interpretadas e 
                         aplicadas na oceanografia operacional e detec{\c{c}}{\~a}o de 
                         vazamentos de {\'o}leo na superf{\'{\i}}cie do mar, bem como, 
                         para melhorar nosso entendimento sobre os processos 
                         f{\'{\i}}sicos e biol{\'o}gicos do meio marinho. ABSTRACT: 
                         Optical/near-infrared remote sensing images acquired by remote 
                         sensors in specular bidirectional reflection conditions between 
                         sun, sea surface and sensor (sunglint condition) can be used to 
                         identify oceanographic and meteorological features and processes 
                         at work on the surface of the sea at the time of image 
                         acquisition. Moderate Resolution Imaging Spectroradiometer (MODIS) 
                         images in sunglint conditions over the Brazilian Southeastern 
                         continental shelf were digitally processed and analyzed allowing 
                         identify features as the Brazil Current front, mesoscale eddies 
                         and meanders, internal solitary waves, atmospheric rolls, biogenic 
                         and mineral surface slicks. Base on the understanding about these 
                         ocean and atmospheric process and the mechanism which allow us to 
                         distinguish these features in sunglint contaminated images. As 
                         highlighted here, it is possible to do a better and more detailed 
                         interpretation of complex features visible in such images, 
                         information that can be applied in operational oceanography, as 
                         well as to obtain a better understanding of marine environment 
                         processes. The atmospheric correction more suitable to sunglint 
                         conditions are here descripted too. As well, the sunglint 
                         condition dependence of favorable solar zenith angles which 
                         partially restrict its geometry of acquisition (sun, sensor and 
                         sea surface) between October and February at the Brazilian 
                         Southeastern coast.",
                  doi = "10.1590/0102-77863230014",
                  url = "http://dx.doi.org/10.1590/0102-77863230014",
                 issn = "0102-7786",
             language = "pt",
           targetfile = "freitas_feicoes.pdf",
        urlaccessdate = "24 nov. 2020"
}


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