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@Article{CostaBern:2012:ReWiSt,
               author = "Costa, Mabel Calim and Bernardes, Marcos Eduardo Cordeiro",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Remote Wind Stress Influence On Mean Sea Level In A Subtropical 
                         Coastal Region",
              journal = "Brazilian Journal of Oceanography",
                 year = "2012",
               volume = "60",
               number = "3",
                pages = "331--342",
             keywords = "Filtro de Thompson, an{\'a}lise espectral, NCEP/NCAR, 
                         Canan{\'e}ia, Brasil, Thompson filter, Spectral analysis, 
                         NCEP/NCAR, Cananeia, Brazil.",
             abstract = "O presente estudo tem por objetivo avaliar a influ{\^e}ncia 
                         relativa de tens{\~a}o do vento remoto na varia{\c{c}}{\~a}o do 
                         n{\'{\i}}vel m{\'e}dio do mar (NMM) para a regi{\~a}o costeira 
                         de Canan{\'e}ia (SP) durante o per{\'{\i}}odo de 1/1/1955 a 
                         31/12/1993. Foram aplicados um filtro de passa-baixa de Thompson 
                         (1983), otimizado para a regi{\~a}o de Canan{\'e}ia, al{\'e}m 
                         de an{\'a}lise espectral (espectro cruzado, coer{\^e}ncia e 
                         defasagem) entre o NMM e as componentes paralela (T//) e 
                         perpendicular (T|) da tens{\~a}o do vento. Estas foram 
                         extra{\'{\i}}das de quatro pontos de grade do modelo global 
                         NCEP/NCAR. Observou-se a predomin{\^a}ncia das 
                         oscila{\c{c}}{\~o}es anuais como aquelas de maior coer{\^e}ncia 
                         e energia, destacando-se os per{\'{\i}}odos de aproximadamente 
                         341 dias (frequ{\^e}ncia de 0,00293 cpd) e 410 dias 
                         (frequ{\^e}ncia de 0,00244 cpd), respectivamente. As maiores 
                         coer{\^e}ncias e energia em todo estudo foram encontradas nos 
                         pontos mais distantes da costa. Este fato pode estar associado 
                         {\`a}s restri{\c{c}}{\~o}es do modelo NCEP/NCAR em representar 
                         os limites continentais. Conclui-se tamb{\'e}m que a tens{\~a}o 
                         do vento remoto pode ter um papel importante em v{\'a}rias 
                         escalas temporais do NMM, incluindo a escala anual. A partir dos 
                         valores de coer{\^e}ncia e picos energ{\'e}ticos, a componente 
                         paralela da tens{\~a}o do vento foi a que mostrou ser mais 
                         influente no NMM da regi{\~a}o estudada. ABSTRACT: The purpose of 
                         this study was to assess the relative influence of remote wind 
                         stress on mean sea level (MSL) variations in the coastal region of 
                         Cananeia (Sao Paulo State, Southern Brazil) during the period from 
                         1/1/1955 to 12/31/1993. An optimized low-pass Thompson filter for 
                         the study area, and spectral analysis (cross spectrum, coherence 
                         and phase lag) of the relationship between the MSL and both 
                         parallel (T//) and perpendicular (T|) wind stress components were 
                         applied. These were extracted from four grid points of the 
                         NCEP/NCAR global model. The predominance of annual oscillations as 
                         those of greatest coherence and energy, of periods of 
                         approximately 341 days (frequency of 0.00293 cpd) and 410 days 
                         (frequency of 0.00244 cpd), respectively, were observed. Offshore 
                         NCEP/NCAR grid points were those with the highest coherence and 
                         energy throughout the study in relation to the observed MSL. This 
                         may be linked to the restriction of the NCEP/NCAR model as regards 
                         the inland limit. It is also concluded that remote wind stress may 
                         play an important role in several MSL time scales, including the 
                         annual ones. Based on criteria such as coherence and energy peaks, 
                         the wind stress component of greatest effect on MSL was the 
                         parallel one.",
                 issn = "1679-8759",
        urlaccessdate = "21 jan. 2021"
}


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