Planetary Radiation
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Análise de dados de sistema LIDAR de retroespalhamento correlacionada com dados meteorológicos / Data analysis of a backscattering LIDAR system correlated with meteorological data
Nestes últimos anos, tivemos um aumento no interesse na monitoração dos efeitos da atividade humana sobre a atmosfera e o clima no planeta. O uso de técnicas de sensoriamento remoto têm sido utilizados em diversos estudos, inclusive em estudos relacionados à mudanças globais. Um sistema LIDAR de espalhamento, primeiro deste tipo no Brasil, tem sido us
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/04/2009
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2. Tecnologia do Pó de Turmalina Preta
The black tourmaline powder of shorlite-dravite series, NaFe3Al6(Si6O18)(BO3)3(OH)3OH, has been used in agricultures and in the production of cosmetics, paints, tissues, water and air purifiers. The pyroelectricity and the emission of far infrared radiation of tourmaline are the main properties explored by most products. The black tourmaline shows significan
Publicado em: 2008
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3. Algoritmo regional de monitoramento da taxa de fixação de carbono pelas florestas tropicais da América do Sul / Regional algorithm for monitoring the carbon assimilation by tropical forests of the South America
The most likely scenario for the next decades presents strong modifications in the global environment, including increase of the atmospheric concentration of CO2 and other trace gases, climate change and intensification of the impacts caused by the man s action. These changes may cause important modifications in the composition, structure and distribution of
Publicado em: 2008
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4. A New Estimate of the Components of the Earth\ s Longwave Radiation Budget
(...)This thesis aimed at understanding how the longwave radiation emitted by the Earth\ s surface is transferred and partitioned into the atmosphere. In this context, the effects of greenhouse gases, clouds and aerosols on the Earth radiation budget have been addressed. The work has been motivated by the results of Kiehl and Tren berth (1997) - KT97. They h
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 200606
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5. Effect of heat treatment on Fe-B-Si-Nb alloy powder prepared by mechanical alloying
The effect of heat treatment on crystallization behavior of Fe73.5B15Si10Nb1.5 alloy powder prepared by mechanical alloying was studied. The powder samples were prepared by mechanical alloying (MA) and for different milling times (1, 5, 25, 70 and 100 hours). Crystalline powders of iron, boron, silicon and niobium were sealed with tungsten carbide balls in a
Materials Research. Publicado em: 2005-06
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6. Determination of chemical abundances in yellow symbiotic stars from the southern hemsiphere / "Determinação de abundâncias químicas em simbióticas amarelas austrais"
The present work is a contribution to the study of chemical composition of southern symbiotic stars, scarcely studied in literature. We present a complete set of yellow southern symbiotic stars extracted from Belczynski. Some of the objects analyzed had no spectroscopic data in literature. The data were obtained using 1.6m telescope in LNA, Brazil and the IU
Publicado em: 2004
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7. Estudo das camadas limites planetárias marinha e continental na região do Centro de Lançamento de Alcântara / Study the planetary boundaries layers marine and continental in region of the Alcântara Space Launching Center
The Planetary Boundary Layer (CLP) over the ocean and continent is investigated at the north part of the Maranhão State coastline. With this purpose, the structure these CLPs is examined using observational data and numerical studies. Simultaenous radiossonde data were collacted and used in this study. The tri-dimensional mesoecale model (RAMS) is applied t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/04/2002
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8. Estudo das camadas limites planetárias marinha e continental na região do Centro de Lançamento de Alcântara / Study the planetary boundaries layers marine and continental in region of the Alcântara Space Launching Center
The Planetary Boundary Layer (CLP) over the ocean and continent is investigated at the north part of the Maranhão State coastline. With this purpose, the structure these CLPs is examined using observational data and numerical studies. Simultaenous radiossonde data were collacted and used in this study. The tri-dimensional mesoecale model (RAMS) is applied t
Publicado em: 2002
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9. Verificação do modelo de circulação geral da atmosfera do CPTEC/COLA: ciclo hidrológico e processos de superfície / Verification of the global model circulation atmospheric of CPTEC/COLA: hydrological cycle and surface process
The verification of surface processes and hydrological cycles obtained in the climate simulation experiment using the COLACPTEC atmospheric general circulation model, forced by the monthly mean sea surface temperatures, is conducted. The simulated climate is obtained from the 12-month average of a set of four 15-month integration?s. The verification is made
Publicado em: 1997
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10. Oceanic protection of prebiotic organic compounds from UV radiation
It is frequently stated that UV light would cause massive destruction of prebiotic organic compounds because of the absence of an ozone layer. The elevated UV flux of the early sun compounds this problem. This applies to organic compounds of both terrestrial and extraterrestrial origin. Attempts to deal with this problem generally involve atmospheric absorbe
The National Academy of Sciences.
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11. The remarkably high excitation planetary nebula GC 6537
NGC 6537 is an unusually high excitation point symmetric planetary nebula with a rich spectrum. Its kinematical structures are of special interest. We are here primarily concerned with the high resolution spectrum as revealed by the Hamilton echelle Spectrograph at Lick Observatory (resolution ≈ 0.2 Å) and supplemented by UV and near-UV data. These exten
The National Academy of Sciences.
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12. A numerical strategy for efficient modeling of the equatorial wave guide
Convection in the tropics is observed to involve a wide-ranging hierarchy of scales from a few kilometers to the planetary scales and also has a profound impact on short-term climate. The mechanisms responsible for this behavior present a major unsolved problem. A promising emerging approach to address these issues is cloud-resolving modeling. Here a fa
The National Academy of Sciences.