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...
por Portal Padrão
publicado
22/04/2013
1:59 PM
Latin America’s nitrogen challenge
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por Portal Padrão
publicado
22/04/2013
1:18 PM
The droughts of 1997 and 2005 in Amazonia: floodplain hydrology and its potential ecological and human impacts
It is well known that most of the severe droughts in Amazonia, such as that of 1997, are El Nio-related. However, in 2005, the Amazon was affected by a severe drought that was not El Nio-related, as most of the rainfall anomalies that have happened in southwestern Amazonia are driven by sea surface ...
por Portal Padrão
publicado
22/02/2013
4:29 PM
Sumário executivo – Impactos, vulnerabilidade e adaptação
Este documento apresenta as principais contribuições do Volume 2 do Primeiro Relatório de Avaliação Nacional - RAN1, do Painel Brasileiro de Mudanças Climáticas, que foi estruturado de acordo com o escopo previamente definido pelos Coordenadores e Autores Principais dos capítulos do Grupo de...
por Portal Padrão
publicado
26/01/2013
2:34 PM
Electric fields changes produced by positives cloud-to-ground lightning flashes
Positive flashes correspond to approximately only 10\% of the total number of flashes produced by a thunderstorm. However, strokes with high peak currents and long continuing currents are usually present in positive flashes. Therefore, positive flashes are responsible for more intense damage than th...
por Portal Padrão
publicado
22/01/2013
4:22 PM
The impacts of global climate changes on the wind power density in Brazil
Brazils wind energy production has escalated up recently. However, the long-term wind projects do not include the yet unknown impacts of climate changes on wind power. This work is an assessment of these impacts by applying forecasts of a climate model and trend analysis over climatological time ser...
por Portal Padrão
publicado
22/01/2013
2:33 PM
Relatório de Atividades 2011-2013 – Instituto Nacional de Ciência e Tecnologia para Mudanças Climáticas
Temos o prazer de apresentar o 3º Relatório de Atividades do Instituto Nacional de Ciência e Tecnologia para Mudanças Climáticas (INCT para MC), que resume os destaques científicos de seus 26 sub-projetos de pesquisa, no período de setembro de 2011 a março de 2013. O documento traz ainda uma...
por Portal Padrão
publicado
19/01/2013
9:55 AM
Riscos das Mudanças Climáticas no Brasil
Quando visitou o Reino Unido em março de 2006, o presidente Lula firmou um acordo de trabalho conjunto entre Reino Unido e Brasil sobre questões relativas às mudanças climáticas. Atualmente os dois países ainda continuam trabalhando juntos, com o mesmo senso de urgência que a visita do presid...
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