Impactos das mudanças de cobertura vegetal nos processos de superfície na região semiárida do Brasil
A cobertura vegetal da superfície continental tem sido consideravelmente alterada pelas atividades humanas, principalmente através da conversão em grande escala da vegetação natural por áreas de cultivos e pastagens. Essas mudanças na cobertura da superfície podem alterar o clima regional e ...
por Portal Padrão
publicado
22/08/2013
1:37 PM
Visible channel development during the initial breakdown of a natural negative cloud-to-ground flash
GPS time synchronized high-speed video records (at 4000 frames per second) and electric field waveforms are discussed for one stepped leader of a negative cloud-to-ground flash whose initial development becomes visible above cloud base. The leader emerges from the opaque region of the thundercloud a...
por Portal Padrão
publicado
22/08/2013
1:36 PM
Validação de dados termopluviométricos obtidos via sensoriamento remoto para o Estado de São Paulo
Dados termopluviométricos são utilizados em diversos estudos. Contudo, a escassez de dados resultante da baixa densidade de estações meteorológicas é um problema frequentemente encontrado. Com isto, a utilização de dados estimados por satélites tem-se mostrado importante para regiões nas q...
por Portal Padrão
publicado
22/08/2013
1:33 PM
Shallow landslide prediction and analysis with risk assessment using a spatial model in the coastal region in the state of São Paulo, Brazil
In Brazil, most of the disasters involving landslide occur in coastal regions, with population density concentrated on steep slopes. Thus, different approaches have been used to evaluate the landslide risk, although the greatest difficulty is related to the scarcity of spatial data with good quality...
por Portal Padrão
publicado
22/08/2013
1:32 PM
Landslide susceptibility mapping in the coastal region in the State of São Paulo, Brazil
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por Portal Padrão
publicado
22/08/2013
1:31 PM
Downscaling of a global climate model for estimation of runoff, sediment yield and dam storage: a case study of Pirapama basin, Brazil
The coastal zone of northeastern Brazil is characterized by intense human activities and by large settlements and also experiences high soil losses that can contribute to environmental damage. Therefore, it is necessary to build an integrated modeling-forecasting system for rainfall-runoff erosion t...
por Portal Padrão
publicado
22/08/2013
1:28 PM
Complex networks identify spatial patterns of extreme rainfall events of the South American Monsoon System
We investigate the spatial characteristics of extreme rainfall synchronicity of the South American Monsoon System (SAMS) by means of Complex Networks (CN). By introducing a new combination of CN measures and interpreting it in a climatic context, we investigate climatic linkages and classify the spa...
por Portal Padrão
publicado
22/08/2013
1:26 PM
WRF-Chem simulations in the Amazon region during wet and dry season transitions: evaluation of methane models and wetland inundation maps
The Amazon region, being a large source of methane (CH4), contributes significantly to the global annual CH4 budget. For the first time, a forward and inverse modelling framework on regional scale for the purpose of assessing the CH4 budget of the Amazon region is implemented. Here, we present forwa...
por Portal Padrão
publicado
22/08/2013
1:23 PM
Contribution of anthropology to the study of climate change
Understanding the challenge that climate change poses and crafting appropriate adaptation and mitigation mechanisms requires input from the breadth of the natural and social sciences. Anthropologys in-depth fieldwork methodology, long engagement in questions of societyenvironment interactions and br...
por Portal Padrão
publicado
22/08/2013
1:20 PM
Surface ecophysiological behavior across vegetation and moisture gradients in tropical South America
Surface ecophysiology at five sites in tropical South America across vegetation and moisture gradients is investigated. From the moist northwest (Manaus) to the relatively dry southeast (P´e de Gigante, state of Sao Paulo) simulated seasonal cycles of latent and sensible heat, and carbon flux pro...
por Portal Padrão
publicado
22/08/2013
1:19 PM
Uso de técnicas de sensoriamento remoto na detecção de processos de degradação de pastagens
Neste trabalho, objetivou-se aplicação de técnicas de sensoriamento remoto na detecção de processos de degradação de pastagens em três microbacias localizadas no município de Guararapes, SP. Para o estudo, utilizou-se uma imagem do satélite Landsat 5 TM do dia 02/02/10 e dados georreferenc...
por Portal Padrão
publicado
22/08/2013
1:17 PM
State of the climate in 2012
For the first time in several years, the El Nino-Southern Oscillation did not dominate regional climate conditions around the globe. A weak La Niña dissipated to ENSO-neutral conditions by spring, and while El Nino appeared to be emerging during summer, this phase never fully developed as sea surfa...
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