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Hierarchical color similarity metrics for step-wise application on sky monitoring surface cameras.

Digital cameras deployed on the surface are frequently used for monitoring atmospheric conditions. Several methods were developed to use the images for synoptic observations, cloud assessments, validation of satellite models, short term forecasting and so on. However, there are some restrictions not...
  • por Portal Padrão
  • publicado
  • 01/12/2020
  • 10:33 AM

Fatores associados a distribuição da temperatura das superfícies em área urbana: zonas climáticas locais e suas características espectrais

Global warming makes urban fabric benchmarking necessary for the development of policies that promote urban heat resilience. This research is aimed at identifying urban fabric patterns, which can promote the negative feedback of the urban climate system naturally. The method includes the use of Land...
  • por Portal Padrão
  • publicado
  • 01/12/2020
  • 10:29 AM

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
  • 01/12/2020
  • 10:26 AM

Co-designing global target-seeking scenarios: a cross-scale participatory process for capturing multiple perspectives on pathways to sustainability.

The United Nations 2030 Agenda catalysed the development of global target-seeking sustainability-oriented scenarios representing alternative pathways to reach the Sustainable Development Goals (SDGs). Implementing the SDGs requires connected actions across local, national, regional, and global level...
  • por Portal Padrão
  • publicado
  • 27/11/2020
  • 3:31 PM

Lightning changes in response to global warming in Rio de Janeiro, Brazil.

Physical concepts based on the Clausius-Clapeyron relation and on the thermodynamics and aerosol characteristics associated with updrafts, global climate models assuming different parametrizations and lightning-related output variables, and lightning-related data (thunderstorm days) are being used t...
  • por Portal Padrão
  • publicado
  • 06/11/2020
  • 7:18 PM

Looking to future perceptions about climate change in Brazil: what children’s teachers think, learn and teach about?

The social and human sciences have had a minor role in the studies of climate change. There remains a signifcant gap in our knowledge and understanding of the many facets of this theme. The educational sector has been neglected in the climate change scientifc debate, although it is acknowledged as a...
  • por Portal Padrão
  • publicado
  • 06/11/2020
  • 5:49 PM

How to prioritize areas for new ant surveys? Integrating historical data on species occurrence records and habitat loss.

Habitat loss is a leading cause of extinctions, which may occur even before species are recorded or formally described. On the other hand, limitations in species distribution data and sampling biases can hamper inferences about patterns of species richness that form the basis of conservation strateg...
  • por Portal Padrão
  • publicado
  • 06/11/2020
  • 5:36 PM

Brazilian amazon indigenous peoples threatened by mining bill.

The Brazilian Amazon has the highest concentration of indigenous peoples in the world. Recently, the Brazilian government sent a bill to Congress to regulate commercial mining in indigenous lands. This work analyzes the risks of the proposed mining bill to Amazonian indigenous peoples and their land...
  • por Portal Padrão
  • publicado
  • 06/10/2020
  • 7:22 PM

Hydro-geomorphological characterization of the Rio Grande Basin, Brazil, using geospatial approach.

Several studies have presented morphometric analysis as the key to understanding hydrological behavior or support tool for the assessment of natural resources and environmental risks in a river basin. The Rio Grande Basin has great socioeconomic and environmental relevance for Brazil; however, its m...
  • por Portal Padrão
  • publicado
  • 06/10/2020
  • 5:40 PM

Enhancement of Cloudless Skies Frequency over a Large Tropical Reservoir in Brazil.

Several studies show the effects of lake breezes on cloudiness over natural lakes and large rivers, but only few contain information regarding large flooded areas of hydroelectric dams. Most Brazilian hydropower plants have large water reservoirs that may induce significant changes in the local envi...
  • por Portal Padrão
  • publicado
  • 27/09/2020
  • 3:02 PM

Nitrous oxide fluxes over establishing biofuel crops: characterization of temporal variability using the cross-wavelet analysis.

Emissions of nitrous oxide (N2O) over croplands are a major source of greenhouse gases to the atmosphere. The precise accounting of sources of N2O is essential to national and global budgets, as well as the understanding of the spatial and temporal relationships with environmental variables such as ...
  • por Portal Padrão
  • publicado
  • 14/09/2020
  • 11:36 AM

Refining national greenhouse gas inventories.

The importance of greenhouse gas inventories cannot be overstated: the process of producing inventories informs strategies that governments will use to meet emissions reduction targets. The Intergovernmental Panel on Climate Change (IPCC) leads an effort to develop and refine internationally agreed ...
  • por Portal Padrão
  • publicado
  • 14/09/2020
  • 11:35 AM