Exploring the time geography of public transport networks with the gtfs2gps package.
The creation of the General Transit Feed Specification (GTFS) in the mid-2000s provided a new data format for cities to organize and share digital information on their public transport systems. GTFS feeds store geolocated data on public transport networks, including information on routes, stops, tim...
por Portal Padrão
publicado
02/05/2024
3:30 PM
A biomass map of the Brazilian Amazon from multisource remote sensin.
The Amazon Forest, the largest contiguous tropical forest in the world, stores a significant fraction of the carbon on land. Changes in climate and land use affect total carbon stocks, making it critical to continuously update and revise the best estimates for the region, particularly considering ch...
por Portal Padrão
publicado
02/05/2024
3:15 PM
Fonte ou semidouro? uma revisão sobre os fluxos de CO2 na plataforma continental brasileira.
Studies of global carbon balance estimates are still incipient in the oceans of the Southern Hemisphere, mainly in coastal areas and continental shelf. Even in Brazil, despite its continental proportion coastline, there is still a great inconsistency in studies on the marine carbonate system and CO2...
por Portal Padrão
publicado
02/05/2024
3:09 PM
Hydrological Model Performance in the Verde River Basin, Minas Gerais, Brazil.
In hydrological modelling, it is important to consider the uncertainties related to a models structures and parameters when different hydrological models are used to represent a system. Therefore, an adequate analysis of daily discharge forecasts that takes into account the performance of hydrologic...
por Portal Padrão
publicado
02/05/2024
3:05 PM
Re-appraisal of the global climatic role of natural forests for improved climate projections and policies.
Along with the accumulation of atmospheric greenhouse gases, particularly carbon dioxide, the loss of primary forests and other natural ecosystems is a major disruption of the Earth's system and is causing global concern. Quantifying planetary warming from carbon emissions, global climate models hig...
por Portal Padrão
publicado
02/05/2024
2:53 PM
Water Lifting and Outflow Gain of Kinetic Energy in Tropical Cyclones.
While water lifting plays a recognized role in the global atmospheric power budget, estimates for this role in tropical cyclones vary from no effect to a major reduction in storm intensity. To better assess this impact, here we consider the work output of an infinitely narrow thermodynamic cycle wit...
por Portal Padrão
publicado
02/05/2024
2:50 PM
Avaliação dos impactos no clima da América do Sul associados ao aumento da temperatura média global e ao desflorestamento da Amazônia: um estudo de modelagem.
As mudanças no clima global resultado da emissão efeito estufa (GEE), estão cada vez mais perceptíveis em todas as atividades humanas. Na América do Sul (AS) as mudanças climáticas são potencializadas por efeitos concomitantes tais como alterações na cobertura da terra, por exemplo o desma...
por Portal Padrão
publicado
02/05/2024
10:23 AM
Impacts on South America moisture transport under Amazon deforestation and 2 °C global warming.
The increase in greenhouse gasses (GHG) anthropogenic emissions and deforestation over the last decades have led to many chemical and physical changes in the climate system, affecting the atmosphere's energy and water balance. A process that could be affected is the Amazonian moisture transport in t...
por Portal Padrão
publicado
30/01/2024
5:18 PM
RECCAP2 Future Component: Consistency and Potential for Regional Assessment to Constrain Global Projections.
Projections of future carbon sinks and stocks are important because they show how the world's ecosystems will respond to elevated CO2 and changes in climate. Moreover, they are crucial to inform policy decisions around emissions reductions to stay within the global warming levels identified by the P...
por Portal Padrão
publicado
30/01/2024
5:16 PM
Sink or carbon source? how the Opuntia cactus agroecosystem interacts in the use of carbon, nutrients and radiation in the Brazilian semi-arid region.
Anthropogenic disturbances directly influence environmental processes and increase the concentration of carbon (C) in the atmosphere. Here, we compare the differences in the seasonality of the balance of carbon, energy, and radiation, as well as seek to identify the interrelationships between these ...
por Portal Padrão
publicado
30/01/2024
5:14 PM
Eventos de sobreirradiância em sistemas fotovoltaicos em Florianópolis – SC.
Investigamos o efeito de eventos de sobreirradiância em inversores para diferentes tecnologias de módulos (CdTe, CdTe ARC, mc-Si), buscando indícios de perda de potência DC/AC e correntes DC capazes de causar efeitos deletérios nos fusíveis dos sistemas em estudo. Analisamos uma série de dado...
por Portal Padrão
publicado
30/01/2024
5:11 PM
Changes in atmospheric circulation and evapotranspiration are reducing rainfall in the Brazilian Cerrado.
Here we analyze the trends of rainfall and the frequency of rainy days over the Brazilian Cerrado between 1960 and 2021 in four distinct periods according to the seasonal patterns over the region. We also evaluated trends in evapotranspiration, atmospheric pressure, winds, and atmospheric humidity o...
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