Ir direto para menu de acessibilidade.
Portal do Governo Brasileiro
Home > PublicaçõesPage 15

Publicações

More results...

Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors
publicacao
Destaque
noticias
Uncategorized

Spectral impact on PV in low-latitude sites: the case of southeastern Brazil.

The spectral impact on various PV materials eamorphous silicon (a-Si), CdTe, CIGS, single crystalline silicon (sc-Si) and multi crystalline (mc-Si)e in two nearby cities of Southeastern Brazil is presented. For every PV technology studied, the values of the spectral mismatch factor on instantaneous,...
  • por Portal Padrão
  • publicado
  • 07/02/2021
  • 1:19 PM

Carbon Monitoring System Flux Net Biosphere Exchange 2020 (CMS-Flux NBE 2020)

Here we present a global and regionally resolved terrestrial net biosphere exchange (NBE) dataset with corresponding uncertainties between 20102018: Carbon Monitoring System Flux Net Biosphere Exchange 2020 (CMS-Flux NBE 2020). It is estimated using the NASA Carbon Monitoring System Flux (CMS-Flux) ...
  • por Portal Padrão
  • publicado
  • 07/02/2021
  • 11:09 AM

How norms, needs, and power in science obstruct transformations towards sustainability.

After decades of inadequate responses to scientists' warnings about global environmental threats, leading analysts of the science-policy interface are seeking an important shift of research focus. This switch is from continued modeling and diagnoses of biogeochemical conditions in favor of enhanced ...
  • por Portal Padrão
  • publicado
  • 07/02/2021
  • 11:03 AM

Functional rather than taxonomic diversity reveals changes in the phytoplankton community of a large dammed river.

River damming reduces the dispersal rates of biota and filter species by altering the local environmental conditions. Although phytoplankton is a key biotic group to indicate changes in aquatic environments, the effects of river damming on the longitudinal distribution of phytoplankton communities a...
  • por Portal Padrão
  • publicado
  • 07/02/2021
  • 10:16 AM

Nocturnal boundary layer erosion analysis in the amazon using large-eddy simulation during goamazon project 2014/5.

This study investigated the erosion of the nocturnal boundary layer (NBL) over the central Amazon using a high-resolution model of large-eddy simulation (LES) named PArallel Les Model (PALM) and observational data from Green Ocean Amazon (GoAmazon) project 2014/5. This data set was collected during ...
  • por Portal Padrão
  • publicado
  • 06/02/2021
  • 11:02 AM

Desertification risk assessment in Northeast Brazil: Current trends and future scenarios.

Desertification is one of the major environmental problems that humanity faces today, since it reduces the availability of ecosystem services, increases food insecurity and poverty, and affects the wellbeing of societies. The analysis of the process is extremely complex, since the phenomenon takes p...
  • por Portal Padrão
  • publicado
  • 07/01/2021
  • 4:53 PM

Environmental drivers of water use for caatinga woody plant species: combining remote sensing phenology and sap flow measurements.

We investigated the water use of Caatinga vegetation, the largest seasonally dry forest in South America. We identified and analysed the environmental phenological drivers in woody species and their relationship with transpiration. To monitor the phenological evolution, we used remote sensing indice...
  • por Portal Padrão
  • publicado
  • 07/01/2021
  • 3:34 PM

Extreme rainfall events over Rio de Janeiro State, Brazil: Characterization using probability distribution functions and clustering analysis.

Extreme rainfall events are likely to become more frequent according to recent scenarios of climate change. This issue is especially important over regions with complex topography, which enhances rainfall variability when associated with weather patterns. The state of Rio de Janeiro (SRJ), southeast...
  • por Portal Padrão
  • publicado
  • 07/01/2021
  • 11:06 AM

Different wavelengths of visible light influence the conidial production and tolerance to ultra-violet radiation of the plant pathogens Colletotrichum acutatum and Fusarium fujikuroi.

The effects of the visible light wavelengths on germination, mycelial radial growth, and conidial production of the plant pathogens Colletotrichum acutatum and Fusarium fujikuroi were studied. Both fungi were grown on potato dextrose agar medium (PDA) in the dark (control) or on PDA under continuous...
  • por Portal Padrão
  • publicado
  • 06/01/2021
  • 11:08 AM

Desertification susceptibility over Rio de Janeiro, Brazil, based on aridity indices and geoprocessing.

Desertification is a serious threat to human development and sustainability. This process is characterized by land degradation over areas with dry sub-humid, semi-arid and arid climate. In this work, climate susceptibility to desertification was identified for the state of Rio de Janeiro (SRJ), Braz...
  • por Portal Padrão
  • publicado
  • 06/01/2021
  • 10:35 AM

Climate change impacts on heat stress in Brazil—Past, present, and future implications for occupational heat exposure.

Climate change has caused an increased occurrence of heat waves. As a result of rising temperatures, implications for health and the environment have been more frequently reported. Outdoor labour activities deserve special attention, as is the case with agricultural and construction workers exposed ...
  • por Portal Padrão
  • publicado
  • 06/01/2021
  • 10:34 AM

Sensibilidade dos modelos CMIP5 à precipitação no Brasil tropical.

O objetivo principal deste estudo é avaliar a capacidade da quinta fase dos modelos do Coupled Model Intercomparison Project (CMIP5) em simular chuvas semanais sobre o Brasil Tropical. Vinte e quatro anos do experimento histórico de dezesseis modelos para as estações do verão e outono austral f...
  • por Portal Padrão
  • publicado
  • 06/01/2021
  • 10:30 AM