Carbon emission as a function of energy generation in hydroelectric reservoirs in Brazilian dry tropical biome
Most energy generation globally is fueled by coal and oil, raising concerns about greenhouse gas emissions. Hydroelectric reservoirs are anthropogenic aquatic systems that occur across a wide geographical extent, and, in addition to their importance for energy production, they have the potential to ...
por Portal Padrão
publicado
22/07/2013
2:31 PM
Bimodality in stable isotope composition facilitates the tracing of carbon transfer from macrophytes to higher trophic levels
Even though the suitability of macrophytes to act as a carbon source to food webs has been questioned by some studies, some others indicate that macrophyte-derived carbon may play an important role in the trophic transfer of organic matter in the food web of shallow lakes. To evaluate the importance...
por Portal Padrão
publicado
22/07/2013
2:25 PM
Land use and land cover map of a semiarid region of Brazil for meteorological and climatic models
An updated vegetation cover and land use map over a semiarid region of Brazil has been produced at a 1 km spatial resolution, using satellite data and remote sensing techniques, for application in climate modeling. The map presents the location and distribution of major vegetation types and non-vege...
por Portal Padrão
publicado
22/06/2013
4:31 PM
Uncertainty assessments of climate change projections over South America
This paper assesses the uncertainties involved in the projections of seasonal temperature and precipitation changes over South America in the twenty-first century. Climate simulations generated by 24 general circulation models are weighted according to the reliability ensemble averaging (REA) approa...
por Portal Padrão
publicado
22/06/2013
4:30 PM
An extensible real-time visualization pipeline for dynamic spatial modeling
This article presents research results of an extensible visualization pipeline for real-time exploratory analysis of spatially explicit simulations. We identify software requirements and discuss the main conceptual and design issues. We propose a protocol for data serialization, a high performance m...
por Portal Padrão
publicado
22/06/2013
3:23 PM
A Study of the long-term variability of thunderstorm days in southeast Brazil
In this report thunderstorm day monthly records obtained in three cities of southeast Brazil (SAo Paulo, Campinas, and Rio de Janeiro) since the 19th century are analyzed. The analysis is complemented by the spatial distribution of lightning in the last decade. For São Paulo and Campinas, data indi...
por Portal Padrão
publicado
22/06/2013
2:37 PM
The relationship between thunderstorm and solar activity for Brazil from 1951 to 2009
The goal of this article is to investigate the influence of solar activity on thunderstorm activity in Brazil. For this purpose, thunder day data from seven cities in Brazil from 1951 to 2009 are analyzed with the wavelet method for the first time. To identify the 11-year solar cycle in thunder day ...
por Portal Padrão
publicado
22/06/2013
2:36 PM
UPLIGHTS upward lightning triggering study
The Upward Lightning Triggering Study (UPLIGHTS) is a three-year National Science Foundation-funded field project that is taking place in Rapid City, South Dakota, from April 2012 to September 2014. Three upward flashes that occurred within a 20-min period were all triggered by a preceding +CG (clou...
por Portal Padrão
publicado
22/05/2013
4:34 PM
A sustentabilidade como ferramenta estratégica empresarial: governança corporativa e aplicação do triple bottom line na Masisa
A ideia de sustentabilidade na empresa indica que, para alcançar um bom desempenho econômico, as empresas devem adotar uma estratégia que contemple o conceito triple bottom line, segundo o qual, as empresas devem prestar contas de sua performance nas áreas econômica, ambiental e social. O prese...
por Portal Padrão
publicado
22/05/2013
1:25 PM
Simulated resilience of tropical rainforests to CO2 -induced climate change: supplementary information
How tropical forest carbon stocks might alter in response to changes in climate and atmospheric composition is uncertain. However, assessing potential future carbon loss from tropical forests is important for evaluating the efficacy of programmes for reducing emissions from deforestation and degrada...
por Portal Padrão
publicado
22/04/2013
2:02 PM
Simulated resilience of tropical rainforests to CO2 -induced climate change
How tropical forest carbon stocks might alter in response to changes in climate and atmospheric composition is uncertain. However, assessing potential future carbon loss from tropical forests is important for evaluating the efficacy of programmes for reducing emissions from deforestation and degrada...
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