Free and open source GIS: will there ever be a Geo-Linux?
This paper examines the constraints that limit the large-scale adoption of open source GIS. Although the open source GIS community has already achieved relevant results, their products have a small market share. There is equivalent to Linux and Apache in the open source GIS scene. We try to explain ...
por Portal Padrão
publicado
27/08/2010
3:22 PM
Ecosystem carbon fluxes and amazonian forest metabolism
Long-term measurements of ecosystem-atmosphere exchanges of carbon, water, and energy, via eddy flux towers, give insight into three key questions about Amazonian forest function. First, what is the carbon balance of Amazon forests? Some towers give accurate site-specific carbon balances, as validat...
por Portal Padrão
publicado
26/08/2009
4:52 PM
Efeito estufa
O efeito estufa e um fenômeno natural que faz com que a temperatura da Terra seja maior do que seria na ausência de atmosfera, permitindo assim que ocorra a vida da forma como a conhecemos. Se não houvesse 0 efeito estufa, a temperatura media da Terra seria -18°C, ao invés dos 15°C que temos h...
por Portal Padrão
publicado
26/08/2009
4:51 PM
Cenários de mudança climática para a América do Sul para o final do Século XXI
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por Portal Padrão
publicado
26/08/2009
4:51 PM
Characteristics of Amazonian climate: main features
This chapter summarizes our current knowledge on the mean climatological features ofAmazonia. Significant uncertainties remain in our understanding ofthe complex dynamics of climate and climate variability in that region, which are due, in part, to the lack of observational data. The strong seasonal...
por Portal Padrão
publicado
26/08/2009
4:50 PM
Understanding the climate of Amazonia: progress from LBA
The Amazon plays an important role in the functioning of the Earth's climate. It acts as one ofthe critical heat sources for the global atmosphere via evaporation of water vapor at the surface and release ofheat in the middle and upper troposphere by latent heat of condensation in tropical convectiv...
por Portal Padrão
publicado
26/08/2009
4:49 PM
Brasil: um país tropical desenvolvido?
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por Portal Padrão
publicado
26/08/2009
4:49 PM
Natureza, tecnologia e sustentabilidade
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por Portal Padrão
publicado
26/08/2009
4:48 PM
Parte II – climas do Brasil: clima da região Amazônica
A bacia Amazônica possui uma gama variada de ecossistemas e grande riqueza de diversidades biológica e étnica. Inclui a maior extensão de foresta tropical da Terra, mais de 5 milhões de km, e responde por aproximadamente um quarto das espécies animais e vegetais do planeta. A precipitação at...
por Portal Padrão
publicado
26/08/2009
4:47 PM
Global warming and climate change in Amazonia: climate-vegetation feedback and impacts on water resources
This chapter contains sections titled: Introduction Warming in Amazonia and observed climate Trens Brief evolution of modeling of climate change in Amazonia: Deforestation and experiments on climate change and Amazonian deforestation Model projections of climate change in the Amazon basin from IPCC ...
por Portal Padrão
publicado
26/08/2009
4:46 PM
Ecophysiology of forest and savanna vegetation
Ecophysiological characteristics of forest and savanna vegetation are compared in an attempt to understand how physiological differences within and between these vegetation types relate to their geographical distributions. A simple ordination first shows that although precipitation exerts a key effe...
por Portal Padrão
publicado
26/08/2009
4:36 PM
The Amazonian boundary layer and mesoscale circulations
The interactions between the Amazonian boundary layer, the surface, atmospheric convection, aerosols, and larger-scale circulations are complex. The field experiments inAmazonia have provided rich insights into the daytime and nighttime boundary layer in different regions and seasons over both fores...
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