Thermohaline Circulation
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. 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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2. 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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3. Numerical study of circulation and thermohaline structure in the São Sebastião channel
O Princeton Ocean Model (POM) foi adaptado ao Canal de São Sebastião (CSS) através do aninhamento de três grades numéricas para estudar as variações sazonais de sua circulação e estrutura termohalina. Em condições médias mensais, o modelo representou razoavelmente bem as condições típicas de primavera, verão, outono e inverno, preenchendo o f
Revista Brasileira de Geofísica. Publicado em: 2005-12
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4. Estudo numérico da circulação e da estrutura termohalina no Canal de São Sebastião. / Numerical study of the circulationand of the termohaline Structureat the São Sebastião Channel.
The Princeton Ocean Model was adapted to São Sebastião Channel (SSC) so as to study the seasonal changes of its circulation and thermohaline structure. Three numerical grids were nested. The coarse grid on Southeast Continental Shelf (SCS) and the fine grid on São Sebastião Channel with an intermediary grid on the region adjacent to the channel. The nume
Publicado em: 2001
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5. Abrupt climate change and thermohaline circulation: Mechanisms and predictability
The ocean's thermohaline circulation has long been recognized as potentially unstable and has consequently been invoked as a potential cause of abrupt climate change on all timescales of decades and longer. However, fundamental aspects of thermohaline circulation changes remain poorly understood.
The National Academy of Sciences.
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6. Evidence for cooler European summers during periods of changing meltwater flux to the North Atlantic
We analyzed fossil chironomids (nonbiting midges) and pollen in two lake-sediment records to reconstruct and quantify Holocene summer-temperature fluctuations in the European Alps. Chironomid and pollen records indicate five centennial-scale cooling episodes during the early- and mid-Holocene. The strongest temperature declines of ≈1°C are inferred at ≈
National Academy of Sciences.
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7. Was a change in thermohaline circulation responsible for the Little Ice Age?
The National Academy of Sciences.
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8. Detecting Holocene changes in thermohaline circulation
Throughout the last glacial cycle, reorganizations of deep ocean water masses were coincident with rapid millennial-scale changes in climate. Climate changes have been less severe during the present interglacial, but evidence for concurrent deep ocean circulation change is ambiguous.
The National Academy of Sciences.
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9. Rapid atmospheric CO2 changes associated with the 8,200-years-B.P. cooling event
By applying the inverse relation between numbers of leaf stomata and atmospheric CO2 concentration, stomatal frequency analysis of fossil birch leaves from lake deposits in Denmark reveals a century-scale CO2 change during the prominent Holocene cooling event that occurred in the North Atlantic region between 8,400 and 8,100 years B.P. In contrast to convent
National Academy of Sciences.