Toward accounting for ecoclimate teleconnections: intra- and inter-continental consequences of altered energy balance after vegetation change
Context Vegetation is projected to continue to undergo major structural changes in coming decades due to land conversion and climate change, including widespread forest die-offs. These vegetation changes are important not only for their local or regional climatic effects, but also because they can a...
por Portal Padrão
publicado
21/01/2016
1:27 PM
Uso da geotecnologia para análise temporal da cobertura florestal
The landscape ecology metrics associated with data mining can be used to increase the potential of remote sensing data analysis and applications, being an important tool for decision making. The present study aimed to use data mining techniques and landscape ecology metrics to classify and quantify ...
por Portal Padrão
publicado
20/01/2016
4:16 PM
HAND contour: a new proxy predictor of inundation extent
Tools for accurately predicting environmental risks, such as the location and spatial extent of potential inundation, are not widely available. A dependence on calibration and a lack of available flood data have prevented the widespread application of existing hydrodynamic methods for predicting the...
por Portal Padrão
publicado
20/01/2016
3:54 PM
Desempenho do modelo HAND no mapeamento de áreas suscetíveis à inundação usando dados de alta resolução espacial
O mapeamento das áreas suscetíveis à inundação constitui uma etapa importante na minimização dos danos gerados por enchentes, sobretudo em áreas urbanas. Este mapeamento é usado no estabelecimento de diretrizes de uso e ocupação do solo e na formulação dos planos de defesa civil. No mun...
por Portal Padrão
publicado
20/01/2016
3:53 PM
Downward transport of ozone rich air and implications for atmospheric chemistry in the Amazon rainforest.
From April 2014 to January 2015, ozone (O3) dynamics were investigated as part of GoAmazon 2014/5 project in the central Amazon rainforest of Brazil. Just above the forest canopy, maximum hourly O3 mixing ratios averaged 20 ppbv (parts per billion on a volume basis) during the JuneSeptember dry mont...
por Portal Padrão
publicado
20/01/2016
2:58 PM
Toward an integrated monitoring framework to assess the effects of tropical forest degradation and recovery on carbon stocks and biodiversity
Tropical forests harbor a significant portion of global biodiversity and are a critical component of the climate system. Reducing deforestation and forest degradation contributes to global climate-change mitigation efforts, yet emissions and removals from forest dynamics are still poorly quantified....
por Portal Padrão
publicado
20/01/2016
2:17 PM
Climate change impacts on the sustainability of the firewood harvest and vegetation and soil carbon stocks in a tropical dry forest in Santa Teresinha Municipality, Northeast Brazil
The Brazilian semi-arid region is characterized by low and erratic rainfall, high temperatures and high potential evapotranspiration. The removal of firewood from the native tropical dry forest, called Caatinga, can negatively impact important ecosystem services, such as soil conservation, water res...
por Portal Padrão
publicado
20/01/2016
1:49 PM
Comparisons of the Noah-MP land surface model simulations with measurements of forest and crop sites in Amazonia.
This study evaluates the simulations of the Noah-MP surface processes over a crop and a forest sites in Amazonia using tower observations. Soil moisture simulations agree with the observations in both land covers, mainly during the rainy season. However, simulations show cold biases in the soil temp...
por Portal Padrão
publicado
20/12/2015
3:30 PM
Pope Francis’s environmental encyclical in Latin America: mutual influences.
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por Portal Padrão
publicado
20/11/2015
2:39 PM
Estimating the potential for solar energy utilization in Chile by satellite-derived data and ground station measurements.
The progress in solar energy resource assessment for Chile is reported, including measurements from a ground station network spanning more than three years of data, satellite estimations from the recently developed Chile-SR model including three full years of data, and simulations that evaluate the ...
por Portal Padrão
publicado
20/11/2015
2:31 PM
Forest transitions in mosaic landscapes: smallholder’s flexibility in land-resource use decisions and livelihood strategies from World War II to the present in the Amazon estuary.
The question of how smallholders of the Amazon estuary, locally known as cabolcos, have adapted their land use systems to produce resources during booms and busts is analyzed in this article. We draw upon more than 50 years of census data and more than 30 years of remotely sensed land-cover data to ...
por Portal Padrão
publicado
20/10/2015
4:17 PM
Regional climate modelling in CLARIS-LPB: a concerted approach towards twentyfirst century projections of regional temperature and precipitation over South America.
The results of an ensemble of regional climate model (RCM) simulations over South America are presented. This is the first coordinated exercise of regional climate modelling studies over the continent, as part of the CLARIS-LPB EU FP7 project. The results of different future periods, with the main f...
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