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
Biological nitrogen fixation across major biomes in Latin America: patterns and global change effects.
Biological nitrogen fixation (BNF) supports terrestrial primary productivity and plays key roles in mediating human-induced changes in global nitrogen (N) and carbon cycling. However, there are still critical uncertainties in our understanding of the amount of BNF occurring across terrestrial ecosys...
por Portal Padrão
publicado
14/09/2020
11:32 AM
Spatiotemporal data analysis with chronological networks.
The number of spatiotemporal data sets has increased rapidly in the last years, which demands robust and fast methods to extract information from this kind of data. Here, we propose a network-based model, called Chronnet, for spatiotemporal data analysis. The network construction process consists of...
por Portal Padrão
publicado
14/09/2020
11:31 AM
Downscaling of climate extremes over South America – Part I: model evaluation in the reference climate.
In this paper, we evaluate temperature and precipitation trends over South America (SA), simulated by the regional Eta model with 20-km horizontal resolution nested to three global models: The Canadian Earth System Model Second Generation (CanESM2-ES), The Met Office Hadley Centre Global Environment...
por Portal Padrão
publicado
14/09/2020
11:29 AM
Corrigendum to “Analysis of areas undergoing desertification, using EVI2 multi-temporal data based on MODIS imagery as indicator”
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por Portal Padrão
publicado
14/09/2020
11:26 AM
Detection of extreme phenomena in the stable boundary layer over the Amazonian forest.
We apply different methods for detection of extreme phenomena (EP) in air-turbulent time series measured in the nocturnal boundary layer above the Amazon forest. The methods used were: (a) a Morlet complex wavelet transform, which is often used in analysis of non-linear application processes. Throug...
por Portal Padrão
publicado
06/09/2020
7:14 PM
Assessing drought in the drylands of northeast Brazil under regional warming exceeding 4 degrees C
Historically, during periods of extreme drought, food security in the drylands of the semiarid region of Northeast Brazil (NEB) is under severe risk due to agricultural collapse. The drought that started in 2012 continues to highlight the vulnerability of this region, and arid conditions have been d...
por Portal Padrão
publicado
06/09/2020
5:49 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
06/09/2020
5:37 PM
Projeto educação – extensão educacional: um projeto de difusão do conhecimento científico.
O conhecimento e o desenvolvimento científicos e tecnológicos promovidos por Universidades e Instituições de Pesquisa são essenciais para o Brasil, bem como sua difusão à população, de modo que a sociedade tenha consciência de sua importância e apoie novas produções no âmbito da ciênc...
por Portal Padrão
publicado
30/08/2020
2:34 PM
Evapotranspiration and gross primary productivity of secondary vegetation in Amazonia inferred by eddy covariance.
The conversion of primary forest (PF) to other types of land cover, such as pasture and agriculture, in Amazonia, affects regional carbon and water balances, significantly contributing to increased carbon emissions and reduced evapotranspiration. However, secondary forest (SF) growth, resulting from...
por Portal Padrão
publicado
28/08/2020
5:32 PM
Sea surface height trends in the southern hemisphere oceans simulated by the Brazilian Earth System Model under RCP4.5 and RCP8.5 scenarios
The Brazilian Earth System Model (BESM-OA2.5), while simulating the historical period proposed by the fifth phase of the Coupled Model Intercomparison Project (CMIP5), detects an increasing trend in the sea surface height (SSH) on the southern hemisphere oceans relative to that of the pre-industrial...
por Portal Padrão
publicado
25/08/2020
8:38 AM
Seasonal variation of surface radiation and energy balances over two contrasting areas of the seasonally dry tropical forest (Caatinga) in the Brazilian semi-arid.
Arid and semi-arid environments correspond to one-third of the Earths terrestrial surface. In these environments, precipitation is an essential and limiting element for vegetation growth and ecosystem biomass productivity. The semi-arid region of Brazil comprises around 11.5% of the national territo...
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