Oceanic Circulation
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. A Recirculação Interna do Giro Subtropical do Atlântico Sul e a Circulação Oceânica na Região do Pólo Pré-sal da Bacia de Santos / The inner recirculation of the south atlantic dubtropical gyre and the oceanic circulation on the pre-salt cluster region in the Santos Basin
As células de recirculação interna dos giros subtropicais oceânicos são definidas por subdividilos em feições de circulação anticiclônicas adjacentes ao contorno oeste. A estrutura de recirculação interna do Giro Subtropical do Atlântico Sul (GSAS) difere daquelas originalmente propostas por Tsuchiya (1985), Reid (1989) e Stramma &Peterson (1991
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/08/2011
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2. Resposta das circulações oceânica e atmosférica associada ao enfraquecimento da circulação termohalina global / Response of the oceanic and atmospheric circulations associated with the weakening of global thermohaline circulation
A Circulação Termohalina Global (CTG) consiste no transporte de massas dágua oceânicas associado a diferenças na densidade da água do mar devido a variações de temperatura e salinidade. Estudos têm demonstrado que o aumento da precipitação em altas latitudes do Hemisfério Norte e o derretimento do gelo da região do Ártico podem gerar um fluxo d
Publicado em: 2009
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3. Processos dinÃmicos e evolutivos da zona costeira de Itamaracà por sensoriamento remoto e medidas in situ
The coastal zone of Itamaracà is like a highly dynamic environment where land and oceanic processes interact altering frequently coastal characteristics. In this context, this current study examines the responsible processes of such changes from the development and application of methodologies, which includes digital image processing and the obtaining of in
Publicado em: 2009
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4. Resposta da Plataforma Continental Sudeste a ventos sazonais e sinóticos de verão: estudos numéricos / Response of the South Brazil bight to summer seasonal and synoptic winds: numerical studie
In order to study the pertubations caused on the South Brazil Bigth (SBB) caused by the passage of a cold front during Summer, a mean basic state for currents was obtained using the POM (Princeton Ocean Model) through diagnostic simulation, followed by a short round prognostic. The mean currents modeled are in certain instancies similar to the currents measu
Publicado em: 2008
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5. Dry spells occurrence in the northwest portion of Rio Grande do Sul state between the years 1978 and 2005 and its association to the climatic conditions in the atmosphere / Veranicos ocorridos na porção noroeste do estado do Rio Grande do Sul entre 1978 e 2005 e sua associação às condições climáticas na atmosfera
Agriculture plays an extremely important role in the economy of Rio Grande do Sul state. The target region of the present work in its northwest portion is represented by six cities: São Luiz Gonzaga, Santa Rosa, Cruz Alta, Iraí, Passo Fundo e Marcelino Ramos. It constitute a national focus of soya production and thus depend heavily on atmospheric condition
Publicado em: 2008
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6. Influência do gelo marinho antártico no setor austral sudoeste do Atlântico Sul / The influence of antactic sea ice in the austral and southwest sector on the south atlantic
In this work the interaction between Antarctic sea-ice and the South Atlantic ocean (austral and southwestern sectors) is investigated. To accomplish this satellite-observed sea-ice concentration (SIC) and a coupled model from NCAR-CCSM3 (National Center for Atmospheric Research - Community Climate System Model version 3) were employed. Three 150-year simula
Publicado em: 2007
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7. Análise de um método para equação de convecção formulado à luz da mecânica dos meios contínuos a advecção de anomalias oceânicas e meteorológicas / Analysis of a method for the convection equation formulated in the light of mechanical means of the continuous advection of oceanic and meteorological anomalies
In the present work we studied and analyzed the Trajectories Tube method, a conservative, explicit, simple, physically intuitive, semi-Lagrangian algorithm for the convection equation. Kinematical aspects of the mechanics of continuous media are essentially the tools used for formulation and feasibility analysis. We showed that this method is unconditionally
Publicado em: 2006
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8. Validation of heat fluxes over the tropical atlantic: CPTEC coupled ocean-atmosphere model and observations / Validação dos fluxos de calor sobre o atlântico tropical: modelo acoplado oceano-atmosfera do CPTEC e observações
The goal of this work is to infer the importance of surface heat fluxes, estimated by several methods, in the determination of the Sea Surface Temperature (SST) fields in the tropical Atlantic using a set of general circulation ocean model Modular Ocean Model 3 (MOM 3) simulations and a Centro de Previsão de Tempo e Estudos Climáticos (CPTEC) coupled ocean
Publicado em: 2005
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9. SUBSÍDIOS PARA O PLANEJAMENTO DO BALNEÁRIO DO MAR GROSSO, SÃO JOSÉ DO NORTE, RS: AVALIAÇÃO DE ASPECTOS GEOMORFOLÓGICOS E MORFODINÂMICOS COM AUXÍLIO DE GEOTECNOLOGIAS.
The oceanic coast of the Rio Grande do Sul is divided in three sectors: northern, central and southern. The city of São José do Norte, which is part of the central coast, has a small beach-resort with reduced urbanization called Mar Grosso Beach. Major negative environmental impacts on this beach are represented by foredunes occupation, urbanization and ga
Publicado em: 2005
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10. Previsão e análise sobre as regiões sudeste e sul do Brasil utilizando redes neurais artificiais / Forecast and analysis of rainfall over south and southeastern Brazil using artificial neural network
This study uses an Artificial Neural Network (ANN) technique to establish a non-linear relationship between the large scale atmospheric circulation and local surface rainfall. The method involves the use of statistical downscaling applied to outputs from Eta model. In this sense, prognostic equations were developed for 18 locations using the ANN. This method
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/12/2003
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11. Forecast and analysis of rainfall over south and southeastern Brazil using artificial neural network / Previsão e análise sobre as regiões sudeste e sul do Brasil utilizando redes neurais artificiais
This study uses an Artificial Neural Network (ANN) technique to establish a non-linear relationship between the large scale atmospheric circulation and local surface rainfall. The method involves the use of statistical downscaling applied to outputs from Eta model. In this sense, prognostic equations were developed for 18 locations using the ANN. This method
Publicado em: 2003
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12. Estudo da estrutura vertical e horizontal da precipitação e da circulação atmosférica na região da ZCIT. / Study of vertical and horizontal structure of precipitation and atmospheric circulation on the intertropic convergence zone - ITCZ.
Este trabalho apresenta um estudo da estrutura vertical e horizontal da circulação atmosférica e da precipitação na região da Zona de Convergência Intertropical (ZCIT) para os meses de março e abril de 1998 (El niño) e 1999 (La niña). Neste estudo foram utilizados imagens de satélite METEOSAT6 e GOES8, dados de Radiação de Ondas Longas (ROL) da
Publicado em: 2002