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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...- por Portal Padrão
- publicado
- 18/01/2013
- 3:16 PM
Dangerous Climate Change in Brazil
Agreement for the UK and Brazil to work together on climate-change issues was reached when President Lula visited the UK in March 2006. Today, our two countries still work together, with the same sense of urgency his visit inspired, to assess the impacts of climate change on Brazil and the effects o...- por Portal Padrão
- publicado
- 18/01/2013
- 3:13 PM
Solar radiation forecast using artificial neural networks.
The fast increase in importance of the solar energy resource as viable and promising source of renewable energy has boosted research in methods to evaluate the short-term forecasts of the solar energy resource. There is an increase on demand from the energy sector for accurate short-term forecasts o...- por Portal Padrão
- publicado
- 26/12/2012
- 1:22 PM
Socio-climatic hotspots in Brazil.
Brazil suffers yearly from extreme weather and climate events, which can be exacerbated in a warmer climate. Although several studies have analyzed the projections of climate change in Brazil, little attention has been paid to defining the locations that can be most affected, and consequently have a...- por Portal Padrão
- publicado
- 26/11/2012
- 1:36 PM
Estimating greenhouse gas emissions from cattle raising in Brazil.
The study estimated, for the first time, the greenhouse gas emissions associated with cattle raising in Brazil, focusing on the period from 2003 to 2008 and the three principal sources: 1) portion of deforestation resulting in pasture establishment and subsequent burning of felled vegetation; 2) pas...- por Portal Padrão
- publicado
- 23/11/2012
- 2:19 PM
Time-intervals between negative lightning strokes and the creation of new ground terminations.
On average, negative cloud-to-ground (CG) lightning flashes produce 3 to 5 return strokes, and a new ground termination is produced when any stroke after the first strikes the ground in a different place. In order to understand better the physical factors that affect the formation of new ground term...- por Portal Padrão
- publicado
- 26/10/2012
- 12:59 PM
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