Chemical composition at atmospheric particulate matter soluble fraction and meteorological variables in São Paulo state, Brazil.
The objective of this work was to characterize and compare the chemical composition of the PM10 soluble fraction in relation to meteorological variables such as wind direction and air masses backward trajectories. The PM10 was collected during winter of 1999 in two contrasting sites: the São Paulo ...
por Portal Padrão
publicado
22/08/2011
1:30 PM
Desafios a um desenvolvimento sustentável em Aquidauana, Pantanal mato-grossense, Brasil: contradições e confusões no território das águas.
O texto se refere ao município de Aquidauana, localizado no centro-oeste de Mato Grosso do Sul. Pensá-lo no contexto atual de crise(s) anunciada(s), considerando sua formação territorial, é um exercício de combinação que abrange a interpretação de suas recentes transformações sócio-espa...
por Portal Padrão
publicado
22/08/2011
1:29 PM
Environmental factors associated with long-term changes in chlorophyll-concentration in the Amazon floodplain.
Long-term environmental time series of continuously collected data are fundamental to identify and classify pulses and determine their role in aquatic systems. This paper presents in situ daily mean chlorophyll-a concentration time series, key information for the current understanding of carbon flux...
por Portal Padrão
publicado
22/08/2011
1:20 PM
Multi-agent simulator for urban segregation (MASUS): a tool to explore alternatives for promoting inclusive cities.
Urban segregation represents a significant barrier to achieving social inclusion in cities. To mitigate this problem, it is necessary to implement policies founded upon a better understanding of segregation dynamics. This paper proposes MASUS, a multi-agent simulator for urban segregation, which pro...
por Portal Padrão
publicado
22/03/2011
1:39 PM
Climate change and thresholds of biome shifts in Amazonia.
We examine potential critical thresholds for biome shift in the Amazonian tropical forest by forcing a potential vegetation model with prescribed climate anomalies and projections from global and regional climate models and different levels of CO2 fertilization effect under the SRES A2 scenario (207...
por Portal Padrão
publicado
26/09/2010
1:22 PM
PIRATA: project over the Tropical Atlantic: the brazilian experience.
An overview of the international PIRATA project over the tropical Atlantic and its impacts on the development of basin scale oceanographic research in Brazil are presented. In a nutshell, the PIRATA project is a consortium between Brazil, France and the United States for the establishment of a moore...
por Portal Padrão
publicado
26/08/2010
1:35 PM
Climate control of terrestrial carbon exchange across biomes and continents.
Understanding the relationships between climate and carbon exchange by terrestrial ecosystems is critical to predict future levels of atmospheric carbon dioxide because of the potential accelerating effects of positive climate-carbon cycle feedbacks. However, directly observed relationships between ...
por Portal Padrão
publicado
26/08/2010
1:32 PM
Mudanças na circulação atmosférica sobre a América do Sul para cenários futuros de clima projetados pelos modelos globais do IPCC AR4.
Neste trabalho são analisadas as mudanças no padrão de circulação que possam vir a acontecer no clima da América do Sul (AS), como conseqüência do aumento nas concentrações dos gases de efeito estufa. Para isto utilizam-se cinco modelos globais do IPCC AR4 (CCCMA, GFDL, HadCM3, MIROC e GIS...
por Portal Padrão
publicado
26/08/2010
1:30 PM
Deforestation and conservation in major watersheds of the Brazilian Amazon.
Conserving natural vegetation cover is of critical importance for maintaining the ecological integrity and hydrological properties of large river basins (more than 100 000km2). Recent estimates indicate that more than 700 000km2 of Brazilian Amazon have already been deforested, and to reduce further...
por Portal Padrão
publicado
26/08/2010
1:28 PM
Design of a dry cover pilot test for acid mine drainage abatement in southern Brazil, Part II: pilot unit construction and initial monitoring.
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por Portal Padrão
publicado
26/08/2010
1:27 PM
An earth-system prediction initiative for the twenty-first century.
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por Portal Padrão
publicado
26/08/2010
1:26 PM
A comparative study of negative cloud-to-ground lightning characteristics in São Paulo (Brazil) and Arizona (United States) based on high-speed video observations.
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