Atmospheric CO2 inversion reveals the Amazon as a minor carbon source caused by fire emissions, with forest uptake offsetting about half of these emissions.
Tropical forests such as the Amazonian rainforests play an important role for climate, are large carbon stores and are a treasure of biodiversity. Amazonian forests have been exposed to large-scale deforestation and degradation for many decades. Deforestation declined between 2005 and 2012 but more ...
por Portal Padrão
publicado
30/01/2024
11:26 AM
Trophic dynamics of methylmercury and trace elements in a remote Amazonian Lake.
Information on pollutant trophodynamics can be crucial for public health, as contaminated food consumption may lead to deleterious effects. This study was performed in Puruzinho Lake, a remote body of water in the Brazilian Amazon from which a riparian human population obtains an important part of i...
por Portal Padrão
publicado
30/01/2024
11:24 AM
Integrated Spatial Analysis of Land Degradation in Submedium São Francisco Basin, Brazil.
The São Francisco river Submiddle basin holds one of the highest concentrations of land degradation in the Brazilian Semi-arid region. The study analyzed land degradation in this basin using indices based on the DPSIR framework (Driver-Pressure-State-Impact-Response). Seventeen indicators were sele...
por Portal Padrão
publicado
30/01/2024
11:17 AM
Dialogues as a method to enable reflexivity in the scientific context.
As a fulfillment of the requirement for completing the course Reflexive and Critical Perspectives on Sustainability Transitions at the KTH University Royal Institute of Technology, I present the essay Dialogues as a method to enable reflexivity in the scientific context, which aims to organize theor...
por Portal Padrão
publicado
30/01/2024
10:59 AM
Modelo de Ciclo de Carbono: uma reprodução do modelo em linguagem LUA aplicando o paradigma Dinâmica de Sistemas.
O presente trabalho implementa e discute o modelo de referência denominado Carbon Cycle Model (Modelo de Ciclo de Carbono), parte de um conjunto de modelos climáticos simples (simple climate models) ou, mais precisamente, de um conjunto de modelos que contemplam o paradigma Dinâmica de Sistemas. ...
por Portal Padrão
publicado
30/01/2024
10:55 AM
Mudanças climáticas… O que temos a ver com isso?
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por Portal Padrão
publicado
30/01/2024
10:53 AM
Quais são as evidências científicas e as causas das atuais mudanças climáticas globais?
Excessivas emissões de Gases de Efeito Estufa (GEE), resultantes de atividades antropogênicas, são apontadas como as principais causas das atuais mudanças climáticas globais. Evidências da influência humana no Sistema Terrestre cresceram desde o Quarto Relatório de Avaliação do Painel Inte...
por Portal Padrão
publicado
30/01/2024
10:48 AM
Projeções para o recurso solar no Brasil: uma comparação entre resultados de modelos climáticos globais.
Excessivas emissões de gases de efeito estufa (GEE) por consequência das atividades antrópicas são apontadas como as principais causas das atuais mudanças climáticas globais. Desde a publicação do Quarto Relatório de Avaliação do Painel Intergovernamental sobre Mudanças Climáticas (IPCC...
por Portal Padrão
publicado
30/01/2024
10:46 AM
Landscape changes in the Cerrado: Challenges of land clearing, fragmentation and land tenure for biological conservation.
Land clearing, low levels of protection, and high biodiversity make the Brazilian Cerrado a hotspot for biological conservation. However, one of the most active agricultural frontiers in Brazil is located in this region. We thus aimed to evaluate the current trends of deforestation and fragmentation...
por Portal Padrão
publicado
30/01/2024
10:28 AM
Inter-basin water transfers under changing climate and land use: Assessing water security and hydropower in the Paraíba do Sul River basin, Brazil.
The intensification of climate extremes and land uses poses a major challenge for water managers, especially in heavily populated basins with large reservoirs, multiple uses, and inter-basin transfers. In this study, we analyzed water security in the Paraíba do Sul River basin, responsible for supp...
por Portal Padrão
publicado
30/01/2024
10:22 AM
Climate risks and vulnerabilities of the Arabica coffee in Brazil under current and future climates considering new CMIP6 models.
The susceptibility to climate change concerns the coffee market worldwide due to possible severe productivity losses. Brazil is the world's largest Arabica coffee producer and has crops in regions considered persistent climate change hotspots. Our study analyzed risks, vulnerabilities, and susceptib...
por Portal Padrão
publicado
30/01/2024
10:15 AM
Numerical assessment of tidal potential energy in the Brazilian Equatorial Shelf.
The Brazilian Equatorial Shelf (BES) is one among the macrotidal regions worldwide. This study used a high-resolution numerical configuration of the ocean model ROMS (Regional Ocean Modeling System) forced with realistic surface and lateral forcing, as well as with tides and river discharges. Tidal ...
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