Biodiesel de Pinhão Manso (Jatropha curcas L.) em países emergentes: alternativa para o desenvolvimento regional
O pinhão manso (Jatropha curcas L.) tem encontrado obstáculos que dificultam seu sucesso como matéria-prima alternativa ao abastecimento da indústria do biodiesel. Estas barreiras puderam ser observadas por meio de um estudo de caso envolvendo o Brasil e a Índia, países com crescimento econôm...
por Portal Padrão
publicado
22/08/2013
1:53 PM
Variability of air-sea CO2 fluxes and dissolved inorganic carbon distribution in the Atlantic Basin: a coupled model analysis
The biogeochemical dynamics of carbon in the ocean is a subject of fundamental interest to environmental studies. In this context, we have implemented a ten year run of the Brazilian Earth System Coupled Ocean-Atmosphere Model (BESM-OA2.3) integrated with TOPAZ biogeochemical model for the Atlantic ...
por Portal Padrão
publicado
22/08/2013
1:53 PM
Experiments using new initial soil moisture conditions and soil map in the Eta model over La Plata Basin
An effort towards a more accurate representation of soil moisture and its impact on the modeling of weather systems is presented. Sensitivity tests of precipitation to soil type and soil moisture changes are carried out using the atmospheric Eta model for the numerical simulation of the development ...
por Portal Padrão
publicado
22/08/2013
1:52 PM
Updated analyses of temperature and precipitation extreme indices since the beginning of the twentieth century: the HadEX2 dataset
In this study, we present the collation and analysis of the gridded land-based dataset of indices of temperature and precipitation extremes: HadEX2. Indices were calculated based on station data using a consistent approach recommended by the World Meteorological Organization (WMO) Expert Team on Cli...
por Portal Padrão
publicado
22/08/2013
1:51 PM
Calibration and validation of the Integrated Biosphere Simulator (IBIS) for Brazilian Semi-Arid Region
The reliability of predictions from climate and weather models is linked to an adequate representation of the land surface processes. To evaluate performance and to improve predictions, land surface models are calibrated against observed data. Despite an extensive literature describing methods of la...
por Portal Padrão
publicado
22/08/2013
1:38 PM
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...
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