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Percepción remota hierespectral y de radar para evaluación de sabanas brasileñas.

Percepción remota hierespectral y de radar para evaluación de sabanas brasileñas....
  • por Portal Padrão
  • publicado
  • 23/04/2019
  • 6:42 PM

Relatório Anual do Stockholm Resilience Centre – 2018

Acaba de ser lançado o Relatório Anual do Stockholm Resilience Centre (SRC), que traz as principais atividades da instituição nas áreas de pesquisa, políticas, educação e divulgação científica. Fundado em 2007, o SRC é um centro internacional de excelência para a resiliência e a ci...
  • por Portal Padrão
  • publicado
  • 16/04/2019
  • 12:41 PM

Assessing the possible impacts of a 4 °C or higher warming in Amazonia.

The Amazonian forest’s ability to provide environmental services is threatened by anthropogenic forcing at various scales, such as deforestation, fire, global and regional climate change, and extreme events. In addition to the impacts resulting from each one of these drivers, the synergistic effec...
  • por Portal Padrão
  • publicado
  • 15/04/2019
  • 5:58 PM

From spatio-temporal data to chronological networks: an application to wildfire analysis.

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  • por Portal Padrão
  • publicado
  • 15/04/2019
  • 5:55 PM

Exposure assessment of rainfall to interannual variability usingthe wavelet transform.

It is generally accepted that El NiñoSouthern Oscillation (ENSO) is the main modulator of rainfall variability over Northern South America in the interannual scale. Assuming that, an index is proposed to quantify this expected interannual variability in time series of rainfall. The result is the ex...
  • por Portal Padrão
  • publicado
  • 15/04/2019
  • 5:49 PM

Response of the river discharge in the Tocantins River Basin, Brazil, to environmental changes and the associated effects on the energy potential.

Climate change is expected to impact the hydrological regime worldwide, and land use and land cover change may alter the effects of the former in some cases. Secondary growth in deforested and abandoned areas is one of the main consequences of land use and cover changes in Amazonia. Among land uses,...
  • por Portal Padrão
  • publicado
  • 15/04/2019
  • 5:48 PM

Probabilistic flood forecasting in the Doce Basin in Brazil: effects of the basin scale and orientation and the spatial distribution of rainfall.

We critically examined the performance of probabilistic streamflow forecasting inthe prediction of flood events in 19 subbasins of the Doce River in Brazil using theEta (4 members, 5 km spatial resolution) and European Centre for Medium-RangeWeather Forecasts (ECMWF; 51 members, 32 km resolution) we...
  • por Portal Padrão
  • publicado
  • 15/04/2019
  • 5:47 PM

Using a hydrologic model to assess the performance of regional climate models in a semi-arid Watershed in Brazil.

This study assessed the impact of climate change on the hydrological regime of the Paraguaçu river basin, northeastern Brazil. Hydrological impact simulations were conducted using the Soil and Water Assessment Tool (SWAT) for 20202040. Precipitation and surface air temperature projections from two ...
  • por Portal Padrão
  • publicado
  • 15/04/2019
  • 5:46 PM

Neotectonics and tree mortality in a forest ecosystem of the Negro basin: geomorphic evidence of contemporary seismicity in the intracratonic Brazilian Amazonia.

Neotectonic activity was increasingly recorded over the Amazonian lowlands, even during historical times of a few tens of centuries. However, detailed analyses linking structures and styles of deformation are still few considering the large dimension of the region. Such events in a relatively recent...
  • por Portal Padrão
  • publicado
  • 15/04/2019
  • 5:44 PM

Can intensification of cattle ranching reduce deforestation in the Amazon? insights from an agent-based social-ecological model.

Deforestation in the Amazon with its vast consequences for the ecosystem and climate is largely related to subsequent land use for cattle ranching. In addition to conservation policies, proposals to reduce deforestation include measures to intensify cattle ranching. However, the effects of land-use ...
  • por Portal Padrão
  • publicado
  • 15/04/2019
  • 5:41 PM

Simulation of the holocene climate over South America and impacts on the vegetation.

We provide a comprehensive analysis of the Holocene climate and vegetation changes over South America through numerical simulations. Holocene climate for several periods (8 ka, 6 ka, 4 ka, 2 ka, and present) were simulated by an atmospheric general circulation model, forced with orbital parameters, ...
  • por Portal Padrão
  • publicado
  • 15/04/2019
  • 5:40 PM

Agricultural expansion in the Brazilian Cerrado: increased soil and nutrient losses and decreased agricultural productivity.

While food and nutrition security are issues that national and international organizations are tackling, one of the central problems often overlooked is the essential role of soils in providing nutritious food. Soils are the base for food production and food security. However, the majority of soils ...
  • por Portal Padrão
  • publicado
  • 15/04/2019
  • 5:36 PM