Surface Heat Fluxes
Mostrando 13-24 de 27 artigos, teses e dissertações.
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13. Balanço de radiação, energia e fluxo de CO2 em ecossistema de manguezal na Amazônia / Radiation and energy balance and fluxes of CO2 in a Amazon mangrove ecosystem
This work use the longest series of continuous meteorological data and fluxes measurements of CO2, sensible heat and latent heat made in Amazon mangrove ecosystem. The series used in this study corresponds to the period of November, 2002 to August, 2003. The meteorological data were collected using an EDISOL system based on the hedí covariance technique. Th
Publicado em: 2006
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14. Interaction between terrestrial ecosystems and the atmosphere in Amazonia: biogeophysical and biogeochemical connections / Interação entre ecossistemas terrestres e a atmosfera na Amazônia: conexões biogeofísicas e biogeoquímicas
The Amazon is considered by many one of the most important areas of the planet, including extensive areas of tropical forest. However, the forest has been dramatically modified by the deforestation changes in the CO2 concentration night also affect the forest structure. This work aims at better understand the biosphere-atmosphere interaction in the Amazonian
Publicado em: 2006
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15. An analysis of surface fluxes and of the microclimate on cerrado, sugarcane and eucalyptus: implications for regional climate changes / Uma análise dos fluxos de superfície e do microclima sobre cerrado, cana-de-açúcar e eucalipto, com implicações para mudanças climáticas regionais
This work investigates potential regional scale temperature and precipitation changes in the São Paulo state, caused by land use changes. We analised micrometeorological measurements, in the period February 2005 to February 2006, over three different ecosystems (cerrado, sugar cane and eucalyptus plantation). The surface energy balances showed that over the
Publicado em: 2006
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16. Validação dos fluxos de calor sobre o atlântico tropical: modelo acoplado oceano-atmosfera do CPTEC e observações / Validation of heat fluxes over the tropical atlantic: CPTEC coupled ocean-atmosphere model and observations
Este trabalho tem por objetivo inferir a importância dos fluxos de calor, estimados por diversos métodos, na determinação dos campos de Temperatura da Superfície do Mar (TSM) no Atlântico tropical utilizando um conjunto de simulações do modelo de circulação geral dos oceanos Modular Ocean Model version 3 (MOM3) e uma simulação do modelo acoplado
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/05/2005
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17. Experiments on the fundamental mechanisms of boiling heat transfer
The lecture presents a survey of results found by the author and his team during recent years. An experimental technique for precise and systematic measurements of entire boiling curves under steady-state and transient conditions has been developed. Pool boiling experiments for well wettingfluids and fluids with a larger contact angle (FC-72, isopropanol, wa
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2005-03
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18. Transient convective heat transfer
In nature, as well as within the human-made thermal systems, the time-variable regimes are more commonly encountered, if not always, than the permanent regimes. Nevertheless, studies in convection are still more frequent in the permanent regimes, undoubtedly due to the related difficulties in calculation in terms of time and cost of computation. One may dist
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2005-03
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19. 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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20. Balanço de energia e evapotranspiração de cafezal adensado em crescimento sob irrigação localizada. / Energy balance and evapotranspiration in a high density young coffee under located irrigation.
The objectives of this study were to evaluate the magnitude of global evapotranspiration (ETc) in a high density young coffee crop (3.5mx0.9m) under drip irrigation, the ETc partition considering hedgerows and interrows, and the partition of the available radiant energy between sensible and latent heat fluxes. The experiments were conducted from September 20
Publicado em: 2005
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21. Functionality and seasonality on Cerrado and ecotone Forest-Cerrado: an inquiry with micrometeorological data of energy and CO2. / Funcionalidade e sazonalidade sobre cerrano e sobre ecótono floresta-cerrado: uma investigação com dados micrometeorológicos de energia e CO2.
This work discusses the energy and CO2 flux variability over a Cerrado Sensu stricto, in São Paulo state, Brazil, and over a seasonally inundated Forest-Cerrado ecotone in Tocantins state, Brazil. Micrometeorological measurements (30 minute average) of weather (temperature, relative humidity, precipitation and wind speed), radiation fluxes (solar radiation,
Publicado em: 2004
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22. Time variability of sea surface parameters in the tropical Atlantic using satellite and in situ data
The influence of the tropical Atlantic Ocean over the climate of Europe, Africa and America is well known today. However, several questions about high-frequency processes in this region remain open. This thesis addresses the characterisation of the diurnal and other short timescale variability of the meteo-ocean variables measured in the tropical Atlantic Oc
Publicado em: 2004
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23. Estudo de caso sobre o papel dos fluxos de calor latente e sensível em superfície em processos de ciclogênege de costa leste ocorrido na costa da América do Sul / A case study of the role of surface latent and sensible heat fluxes in South America east coast cyclogenesis
Foram realizadas simulações com o objetivo de estudar o impacto dos Fluxos de Calor Total (FCT)de Calor Latente (FCL)e de Calor Sensível (FCS)em superfície sobre o desenvolvimento de uma ciclogênese explosiva observada na costa leste da América do Sul ocorrida no período de 28 a 30 de maio de 1999. Também verificou-se o papel da Corrente do Brasil ne
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 200102
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24. A case study of the role of surface latent and sensible heat fluxes in South America east coast cyclogenesis / Estudo de caso sobre o papel dos fluxos de calor latente e sensível em superfície em processos de ciclogênege de costa leste ocorrido na costa da América do Sul
A cyclogenesis case observed over South America coast is simulated with the aim of verifying the impact of the surface latent (FCL), sensible (FCS)and total (FCT)heat fluxes. The Brazil current role is also explored. The limited-area model of Japan Meteorological Agency (MAL-JAPA)adapted to South America region is used in this work. The data used to initial
Publicado em: 2001