Monitoring of soil moisture for drought risk assessment over the Brazilian semiarid region.
Soil moisture is being monitored over the Brazilian semiarid since 2014 using a network of 595 stations. The network was implemented by Cemaden, the National Center for Monitoring and Early Warning of Natural Disasters, with the objective of monitoring of spatial and temporal patterns of soil water ...
por Portal Padrão
publicado
24/02/2019
2:20 PM
From spatio-temporal data to chronological networks: an application to wildfire analysis.
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por Portal Padrão
publicado
24/02/2019
2:19 PM
Net ecosystem exchange and evapotranspiration in a contrasting climate and land-use conditions in a tropical deciduous dry forest in Brazil.
The largest single block of seasonally dry forest in the world is the Caatinga biome found in northeastern Brazil. It covers 844,453 km2 and houses a high level of endemic plant species adapted to the low precipitation (400-800 mm year-1), high mean air temperature (26-28 oC), and elevated potential...
por Portal Padrão
publicado
24/02/2019
2:18 PM
Changes in the Amazon and Brazilian Cerrado’s water resources due to land use change in the last 40 years.
Understanding how land use change can affect natural dynamics of water resources in Amazon and Brazilian Cerrado is of importance due to the constant pressure for deforestation suffered by these biomes. In this work, the dynamic vegetation model with river routing and flood dynamics INLAND-THMB (Int...
por Portal Padrão
publicado
24/02/2019
2:14 PM
Soil moisture variation along a toposequence in the northeast Brazilian caatinga.
Soil moisture variations and soil water potentials are crucial to understand the plant behavior under water stress conditions. Such kind of data are also valuable for modeling efforts in hydrology, ecophysiology, soil-plantatmosphere interactions and earth system models. Here we present soil moistur...
por Portal Padrão
publicado
24/02/2019
2:12 PM
Exposure assessment of rainfall to interannual variability usingthe wavelet transform.
It is generally accepted that El NiñoSouthern Oscillation (ENSO) is the main modulator of rainfall variability over Northern South America in the interannual scale. Assuming that, an index is proposed to quantify this expected interannual variability in time series of rainfall. The result is the ex...
por Portal Padrão
publicado
24/02/2019
2:11 PM
Response of the river discharge in the Tocantins River Basin, Brazil, to environmental changes and the associated effects on the energy potential.
Climate change is expected to impact the hydrological regime worldwide, and land use and land cover change may alter the effects of the former in some cases. Secondary growth in deforested and abandoned areas is one of the main consequences of land use and cover changes in Amazonia. Among land uses,...
por Portal Padrão
publicado
24/02/2019
11:24 AM
Probabilistic flood forecasting in the Doce Basin in Brazil: effects of the basin scale and orientation and the spatial distribution of rainfall.
We critically examined the performance of probabilistic streamflow forecasting inthe prediction of flood events in 19 subbasins of the Doce River in Brazil using theEta (4 members, 5 km spatial resolution) and European Centre for Medium-RangeWeather Forecasts (ECMWF; 51 members, 32 km resolution) we...
por Portal Padrão
publicado
24/02/2019
11:23 AM
Using a hydrologic model to assess the performance of regional climate models in a semi-arid Watershed in Brazil.
This study assessed the impact of climate change on the hydrological regime of the Paraguaçu river basin, northeastern Brazil. Hydrological impact simulations were conducted using the Soil and Water Assessment Tool (SWAT) for 20202040. Precipitation and surface air temperature projections from two ...
por Portal Padrão
publicado
24/02/2019
11:15 AM
Neotectonics and tree mortality in a forest ecosystem of the Negro basin: geomorphic evidence of contemporary seismicity in the intracratonic Brazilian Amazonia.
Neotectonic activity was increasingly recorded over the Amazonian lowlands, even during historical times of a few tens of centuries. However, detailed analyses linking structures and styles of deformation are still few considering the large dimension of the region. Such events in a relatively recent...
por Portal Padrão
publicado
24/02/2019
11:14 AM
Performance of laser-based electronic devices for structural analysis of Amazonian terra-firme forests.
We are obliged to several persons that enabled our research stay at ZF2. We thank Bruno Takeshi, Ana Paula Rocha, and Luciano Castilho for providing logistic support as well as all volunteer researchers who helped during the fieldwork and setup of the experiment. We thank Alacimar Guedes by the qual...
por Portal Padrão
publicado
24/02/2019
11:12 AM
Electrochemical determination of sunscreens agents in cosmetic using square wave voltammetry.
Sunscreen agents and in particular UV filters are compounds added in different cosmetic formulations, that has the function of preventing damage caused by sun exposition. Therefore, this paper proposes the development of a simple, fast and reliable electroanalytical method utilizing square wave volt...
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