Upper Atmosphere
Mostrando 1-12 de 43 artigos, teses e dissertações.
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1. Organic matter composition related to methane ebullitive flux of an urban coastal lagoon, Southeastern Brazil
In 2016, Brazil emitted 18.25 Tg of methane. Some of these emissions occur through continental aquatic ecosystems, locations of fate and accumulation of organic and inorganic matter. Thus, the aim of this study is to evaluate the origin of organic matter in Rodrigo de Freitas Lagoon, an eutrophic, coastal and chocked lagoon in Rio de Janeiro, Brazil, through
Quím. Nova. Publicado em: 15/08/2019
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2. Plumas em escoamento uniforme com estratificação de duas camadas
RESUMO Plumas ocorrem quando um fluido é descarregado em outro fluido com densidade diferente, como poluentes na atmosfera. Neste trabalho, desenvolveu-se um estudo experimental em um tanque de água e modelagem matemática usando a abordagem integral com o intuito de investigar o escoamento gerado por plumas salinas em escoamento uniforme e com estratifica
Eng. Sanit. Ambient.. Publicado em: 08/04/2019
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3. Soil carbon stock and humification in pastures under different levels of intensification in Brazil
ABSTRACT: Intensive management of tropical pastures has shown potential for greenhouse gas (GHG) mitigation due to high forage production and C accumulation in the soil. This study aimed to evaluate different pasture management options in relation to their effect on soil C stocks and soil organic matter (SOM) humification. Pastures in four beef cattle produc
Sci. agric. (Piracicaba, Braz.). Publicado em: 2019-02
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4. VARIACIÓN DE LA ESTABILIDAD Y ALTURA DE LA CAPA DE MEZCLA EN LA CIUDAD DE PINAR DEL RÍO. SU RELACIÓN CON CONDICIONES SINÓPTICAS
The study was carried out in the city of Pinar del Rio in Cuba during the period 2006-2010, where the behavior of atmospheric stability and the mixing height was analyzed. For obtaining the category of atmospheric stability the classification according to the Monin -Obukhov length was used. The methodology for calculating the mixing height was based on the p
Rev. bras. meteorol.. Publicado em: 2015-03
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5. Maré lunar observada com radar meteórico em três latitudes no Brasil / Lunar tide observed with meteor radar at three latitudes in Brazil
Using meteor radar data from three Brazilian sites [São João do Cariri (7.4° S ; 36.5° W), Cachoeira Paulista (22.7° S; 45.0° W) and Santa Maria (29.7° S; 53.8° W)], the atmospheric semidiurnal lunar tide in the mesosphere and lower thermosphere was studied from January 2005 to December 2008. Monthly tidal amplitudes and phases were determined using
Publicado em: 2010
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6. Maré lunar observada com radar meteórico em três latitudes no Brasil / Lunar tide observed with meteor radar at three latitudes in Brazil
Usando dados de radares meteóricos de três localidades brasileiras [São João do Cariri (7,4° S ; 36,5° W), Cachoeira Paulista (22,7° S; 45, 0° W) e Santa Maria (29,7° S; 53, 8° W)] foi possível estudar a maré lunar atmosférica semidiurna na região da mesosfera e baixa termosfera para o período de janeiro de 2005 a dezembro de 2008. Para determ
Publicado em: 2010
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7. Eventos extremos de precipitação no leste da Amazônia. / Extreme events of rainfall in Eastern Amazon.
The aim of this study was to characterize the extreme events of rainfall in Eastern Amazon, to analyze on ocean-atmosphere conditions in global scale associated with intense occurrence periods of these events, to contribute for temporal variation comprehension of rainfall extreme events, as well as of determinant phenomena to its occurrence and to make furth
Publicado em: 2010
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8. Tipologia e fragmentação das terras úmidas do cerrado na alta bacia do Rio Araguaia, estado de Goiás / Typology and fragmentation wetland savanna int he high Araguia River basin, Goiás state
The aim of this research is to call the attention to the humid areas preservation for they are natural habitat with special dynamic and genesis and that they have been damaged by the gradual development of the use of the soil in the latest year. The upper basin of Araguaia river were chosen as an area study to follow systematically the development of Cerrado
Publicado em: 2010
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9. Um estudo observacional da incursão de sistemas frontais no nordeste brasileiro e sua influência na atmosfera do Centro de Lançamento de Alcântara (CLA) / Observacional study of the incursion on frontal systems on northeast Brazil and its influence in the atmosphere of the Alcantara Launching Center (CLA)
In this work, an observational synoptic configuration pattern study was performed over the South America (SA) and in the South Atlantic (SAO) and South Pacific Oceans (SPO), in events of Frontal Systems (FSs) that reached the Brazilian northeast coast and created an intense cloudiness in the region of the Alcântara Launching Center (ALC). Seven cases were s
Publicado em: 2008
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10. Investigação do fluxo de momento das ondas de gravidade na alta atmosfera através da aeroluminescência / Investigation of gravity wave momentum fluxes in the upper atmosphere derived from airlow
Neste estudo, o fluxo de momento de ondas de gravidade propagando-se até a região MLT foi calculado através de imagens da aeroluminescência e de modelagem teórica. Imagens das emissões do O(1S) 5577, O2(0-1,b) e do OH NIR, obtidas em Cachoeira Paulista (22,7°S; 45,0°W) e em São João do Cariri (7,4°S; 36,6°W), foram processadas a fim de estimar os
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/05/2007
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11. Investigation of gravity wave momentum fluxes in the upper atmosphere derived from airlow / Investigação do fluxo de momento das ondas de gravidade na alta atmosfera através da aeroluminescência
In this study, momentum fluxes due to gravity wave propagation into the MLT region was calculated by using airglow image data and theoretical modeling. Airglow O(1S) 557,7, O2(0-1,b) and OH NIR images were obtained from Cachoeira Paulista (22,7°S; 45,0°W) and São João do Cariri (7,4°S; 36,6°W) and processed for estimation of gravity wave intrinsic para
Publicado em: 2007
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12. Investigação do fluxo de momento das ondas de gravidade na alta atmosfera através da aeroluminescência / Investigation of gravity wave momentum fluxes in the upper atmosphere derived from airlow
Neste estudo, o fluxo de momento de ondas de gravidade propagando-se até a região MLT foi calculado através de imagens da aeroluminescência e de modelagem teórica. Imagens das emissões do O(1S) 5577, O2(0-1,b) e do OH NIR, obtidas em Cachoeira Paulista (22,7°S; 45,0°W) e em São João do Cariri (7,4°S; 36,6°W), foram processadas a fim de estimar os
Publicado em: 2007