Avaliação de desempenho de índices de vegetação na caracterização de classes de cobertura da terra na região do Pantanal nas estações seca e chuvosa.
Este trabalho tem por objetivo avaliar o desempenho dos índices de vegetação NDVI (Normalized Difference Vegetation Index), EVI (Enhanced Vegetation Index) e LSWI (Land Surface Water Index) na região do Pantanal, considerando os principais tipos de cobertura da terra e os aspectos sazonais da pr...
por Portal Padrão
publicado
27/08/2010
3:12 PM
Avaliação de modelos gaussianos para fins regulatórios: um estudo para o verão na região de Nova Iguaçu, RJ.
This paper presents the evaluation of gaussian models of air quality AERMOD and ISC, highly used for regulatory purposes. The study area was Nova Iguaçu city and the period considered was the summer of 2002. For the simulations we considered the emission of SO2 pollutant from 24 stationary sources ...
por Portal Padrão
publicado
27/08/2010
3:09 PM
Estimation of CO2 emissions from deforestation and land use change in the Amazon: nested coupling of atmosphere, dynamic vegetation, LUCC and fire spread models.
Deforestation of tropical forests for logging and agriculture, associated to slash-and-burn practices, is a main contributor of CO2 emissions, both immediate due to biomass burning and future due to the elimination of a potential CO2 sink. Moreover, climate change in the Amazon during the 21st centu...
por Portal Padrão
publicado
27/08/2010
3:08 PM
Hydrological response of the Amazon River to the droughts of 1996-97 and 2004-2005 (Invited).
Severe hydrological droughts in the Amazon have generally been associated to strong El Niño events. More than 100 years of stage record at the port of Manaus confirm that minimum water levels generally coincide with intense warming in the tropical Pacific sea waters. During 2005, however, the Amazo...
por Portal Padrão
publicado
27/08/2010
3:07 PM
Projeções da duração do ciclo da cultura da soja baseadas no modelo regional Eta/CPTEC 40km (cenário A1B).
We evaluated the soybean cycle duration (in days) for an agricultural region in the state of Parana, Brazil, under A1B climate change scenario. The scenario was generated by the Eta model nested into the conditions of HadCM3 model (Eta / CPTEC). We selected four locations (Cândido de Abreu, Cerro A...
por Portal Padrão
publicado
27/08/2010
3:05 PM
Statistical downscaling of the present climate in São Paulo, Brazil.
Simulations for the present climate (1961-1990) in the resolution of 40 km were produced on the South America with the regional model Eta forced by HADCM3 as lateral boundary conditions. The Eta Model was adapted to carry through integrations of decadal timescale for studies of climate change scenar...
por Portal Padrão
publicado
27/08/2010
3:02 PM
Avaliação dos impactos da utilização de um mapa atual de uso e cobertura da terra em modelagem atmosférica.
O conhecimento dos impactos das mudanças nos usos da terra sobre o tempo e clima, tanto no presente quanto no futuro, têm apresentando grande interesse nas pesquisas realizadas atualmente. Muitos estudos mostram que o decorrente desmatamento da região amazônica irá influenciar diretamente o cli...
por Portal Padrão
publicado
27/08/2010
3:01 PM
Observational evidence of the Manaus urban heat island.
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por Portal Padrão
publicado
27/08/2010
3:00 PM
Evaluate the performance of the hydrological model of large lasin in simulate runoff in the watershed Tapajos’s River from of ETA atmospheric model.
The Amazon, with an area of about 6.5 million km2 is the largest Brazilian biome and home of the largest remaining tropical forest. The Amazon basin includes the largest world river system, encompassing ten large sub basins, undergoing various degrees of anthropic changes. Among major basins, the Ta...
por Portal Padrão
publicado
27/08/2010
2:58 PM
Análise da precipitação prevista pelo modelo regional ETA climático para a região nordeste do Brasil.
In this study was realized an analysis and comparison of the precipitation field predicted by climatic regional model ETA of CPTEC and the precipitation field of the database PROCLIMA/CPTEC correspondent the observed data. The existence for possible systematic errors was checked. The study was reali...
por Portal Padrão
publicado
27/08/2010
2:57 PM
Aplicação de um modelo hidrológico de macro-escala na bacia do rio madeira.
A simulação do comportamento hidrológico de bacias hidrográficas consiste em uma das principais ferramentas na gestão dos recursos hídricos, devido à possibilidade de predição dos impactos hidrológicos das mudanças do uso da terra e do cambio climático. Neste sentido, o presente trabalho...
por Portal Padrão
publicado
27/08/2010
2:55 PM
Effects of biomass burning aerosols and land cover use change on the hydrological cycle and surface fluxes in the Amazon Region.
The biomass burning, which occur mostly in tropical areas of the planet, are important sources of particulate matter to the atmosphere. In South America, during the Austral winter, thousands of vegetation fires occur in the forest ecosystems. These fires occur primarily in the Amazon and Central Bra...
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