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Segurança hídrica da bacia do Rio Paraíba do Sul

A intensificação de extremos climáticos, o aumento da demanda, e a falta de um planejamento integrado dos recursos hídricos no Brasil vêm se tornando mais evidente ano após ano. No ano de 2014, deparamo-nos com cheias nas regiões Norte e Sul, enquanto o Sudeste e Nordeste sofrem com deficiên...
  • por Portal Padrão
  • publicado
  • 30/04/2021
  • 2:24 PM

Mind the gap: New insights on large-scale forest dynamics over Amazonian forests from airborne lidar and canopy gap data.

Tree mortality has been pointed out as a key factor to quantify global forests carbon stocks and turnover. While there have been recent developments on observational studies aiming at detection and attribution of tree mortality using remote sensing data in temperate forests, the spatial and temporal...
  • por Portal Padrão
  • publicado
  • 30/04/2021
  • 2:22 PM

Assessment of land use and land cover datasets for Brazil and impact on C emissions.

Brazil is responsible for about one third of the global land use and land cover change (LULCC) carbon dioxide emissions. However, there is a disagreement among different methodologies on the magnitude and trends in emissions and their geographic distribution. One of the main uncertainties is associa...
  • por Portal Padrão
  • publicado
  • 30/04/2021
  • 2:20 PM

Isotopic composition of precipitation in a southeastern region of Brazil during the action of the south Atlantic convergence zone.

The use of stable isotopes of hydrogen and oxygen is a tool widely used to trace water paths along the hydrological cycle, providing support for understanding climatic conditions in different spatial scales. One of the main synoptic scale events acting in southeastern Brazil is the South Atlantic Co...
  • por Portal Padrão
  • publicado
  • 30/04/2021
  • 2:17 PM

Contrasting dissolved organic carbon concentrations in the Bransfield Strait, Northern Antarctic Peninsula: insights into ENSO and SAM effects.

The marine reservoir of dissolved organic carbon (DOC) is equivalent to the atmospheric carbon reservoir and represents the largest reduced carbon stock in the ocean. However, the role of DOC in the global carbon cycle is not fully understood. In this study, we analyzed the distribution of DOC in th...
  • por Portal Padrão
  • publicado
  • 30/12/2020
  • 2:31 PM

Contrasting dissolved organic carbon concentrations in the Bransfield Strait, Northern Antarctic Peninsula: insights into ENSO and SAM effects.

The marine reservoir of dissolved organic carbon (DOC) is equivalent to the atmospheric carbon reservoir and represents the largest reduced carbon stock in the ocean. However, the role of DOC in the global carbon cycle is not fully understood. In this study, we analyzed the distribution of DOC in th...
  • por Portal Padrão
  • publicado
  • 27/12/2020
  • 3:32 PM

Energy and CO2 fluxes over native fields of Southern Brazil through multi-objective calibration of inland model.

Land surface/ecosystem models (LSEMs) play a key role in understanding the Earths climate. They represent ecosystem dynamics by simulating fluxes occurring between the biosphere and atmosphere. However, for a correct flux simulation, it is critical to calibrate the model using robust and state-of-th...
  • por Portal Padrão
  • publicado
  • 25/12/2020
  • 8:39 AM

Lightning during the COVID-19 pandemic in Brazil.

This study is concerned with the effects of a decrease in the air pollution concentration on the lightning characteristics of two large Brazilian cities. The decrease in air pollution happened from March 20, till April 02, 2020, and it was caused by the social distancing effort to contain the COVID-...
  • por Portal Padrão
  • publicado
  • 06/12/2020
  • 7:18 PM

Coagulation and precipitation of cyanobacterial blooms

Eutrophication is the prime water quality issue in inland waters. Eutrophication and its key symptom, harmful cyanobacterial blooms, is expected to further increase in the future, which highlights the importance of managing the issue. The reduction of external nutrient load is crucial but might not ...
  • por Portal Padrão
  • publicado
  • 06/12/2020
  • 5:45 PM

AN EXPLICITLY SPATIAL APPROACH TO IDENTIFYING HEAT VULNERABLE URBAN AREAS AND LANDSCAPE PATTERNS.

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  • por Portal Padrão
  • publicado
  • 03/12/2020
  • 11:35 AM

ENERGIA SOLAR – ESTIMATIVA E PREVISÃO DE POTENCIAL SOLAR

Como principal fonte de energia do sistema Terra/Atmosfera, o conhecimento sobre a radiação solar e os processos físicos que ocorrem até a incidência na superfície do planeta éuma condi¬ção básica para a meteorologia e climatologia. A radiação solar éa principal fonte de energia do s...
  • por Portal Padrão
  • publicado
  • 03/12/2020
  • 11:31 AM

A expansão da geração solar e eólica na matriz elétrica brasileira.

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  • por Portal Padrão
  • publicado
  • 01/12/2020
  • 10:40 AM