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Avaliação das concentrações de poluentes atmosféricos na região metropolitana do vale do paraíba e litoral norte de 2013 até 2022.

O presente estudo investiga a climatologia de 10 anos (2013-2022) das concentrações de poluentes atmosféricos na Região Metropolitana do Vale do Paraíba e Litoral Norte (RMVP). Utilizando dados de satélites e reanálises, foram analisados os padrões sazonais de monóxido de carbono (CO), dió...

por Portal Padrão
publicado
19/12/2025
4:55 PM

Projecting the impact of global warming on the distribution of a potentially harmful and invasive marine diatom.

iatoms represent the most abundant group of microorganisms carried by ballast water; they present great invasive potential and remain viable after long periods of darkness. This is likely the dispersal route of Coscinodiscus wailesii, a species native to the Indian Ocean or Pacific Ocean, which has ...

por Portal Padrão
publicado
19/12/2025
4:52 PM

Modeling the impact of planned highways on deforestation and illegal land occupation in a critical area of Brazilian Amazonia: the Trans-Purus region.

Deforestation in Brazilian Amazon impacts ecosystem services, affects the Amazonian population, and contributes to global warming. Public policies promoting highway construction pose a major threat to a critical area of undesignated public forests in Brazilian Amazonia: the Trans-Purus region-a vast...

por Portal Padrão
publicado
30/09/2025
1:24 PM

Climate change, urbanisation and transmission potential: Aedes aegypti mosquito projections forecast future arboviral disease hotspots in Brazil.

Background Climate change and urban expansion pose significant challenges to controlling Aedes aegypti mosquito populations, a primary vector of arboviruses such as dengue, Zika, and chikungunya. This study aims assess how climate and anthropogenic factors will jointly shape Ae. aegypti densities...

por Portal Padrão
publicado
30/09/2025
1:22 PM

Forecasting drought using machine learning: a systematic literature review.

The number of reported drought events per year and their impacts have signifcantly increased in the last two decades. In addition to monitoring drought conditions, forecasting is essential for planning activities. Various Machine Learning (ML) algorithms have experienced a substantial increase in po...

por Portal Padrão
publicado
09/07/2025
11:26 AM

Atmospheric disconnection from the Amazon forests behind extreme droughts in a tropical savanna of the Orinoco basin.

In 2014, an extreme drought caused massive, unprecedented livestock and wildlife deaths in northwestern South Americas tropical savanna region. The causes of this drought remain unclear. Here, we present evidence that a weakening of the atmospheric teleconnection from the Amazon forests is a previou...

por Portal Padrão
publicado
09/07/2025
11:25 AM

Co-production in climate services for the electricity sector in Brazil-Insights from the CLIMAX project.

This research paper presents the findings and lessons from the international CLIMAX project-Climate Services Through Knowledge Co-production: A Euro-South American Initiative for Strengthening Societal Adaptation Response to Extreme Events. The project, engaging with the Brazilian National Electric ...

por Portal Padrão
publicado
09/07/2025
11:24 AM

Eutrophication triggers diel and seasonal shifts of carbon dioxide and oxygen in tropical urban coastal waters.

Coastal waters play a pivotal role in the global carbon cycle, showing increased short-term variability of dissolved oxygen saturation (DOsat) and partial pressure of greenhouse gases like carbon dioxide (pCO(2) ), especially in underrepresented tropical eutrophic environments. Here, we conducted h...

por Portal Padrão
publicado
09/07/2025
11:22 AM

Integrating renewable energy for power security under water stress scenarios due to climate change: Strategies and opportunities.

Hydropower systems are vulnerable to climate change effects, mainly in the Southern Hemisphere, risking energy security and investments in emerging markets. With Brazil as the representative case, this study explores strategies to enhance the power system's reliability and opportunities amid water s...

por Portal Padrão
publicado
09/07/2025
11:21 AM

How well CMIP6 models simulate key boundary conditions affecting South American climate? Insights for regional modeling efforts.

South America is a large continent with a wide diversity of weather and climate features, including tropical, subtropical and extratropical regimes interacting within a complex landscape. Simulations by global climate models, as well as their downscaling through regional circulation models or statis...

por Portal Padrão
publicado
09/07/2025
11:20 AM

Changes in the aridity index across Brazilian biomes.

The increase in aridity has been reported in different regions of the world in recent decades. This study analyzes changes in aridity in Brazil over the period 19612020, both in terms of their spatial distributions and across different main Brazilian biomes, using the index recommended by the desert...

por Portal Padrão
publicado
09/07/2025
11:12 AM

Influence of geomagnetic disturbances on myocardial infarctions in women and men from Brazil.

Background Understanding the role of space weather, specifically Geomagnetic Disturbances (GMDs) caused by solar activity, on health outcomes is unclear. One emerging link includes the impact of space weather on myocardial infarctions (MI). In this study we examined the correlation between MI and GM...

por Portal Padrão
publicado
09/07/2025
11:11 AM