Bernardo Barbosa da Silva
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View article: ESTIMET: Enhanced and Spatial-Temporal Improvement of MODIS EvapoTranspiration algorithm for all sky conditions in tropical biomes
ESTIMET: Enhanced and Spatial-Temporal Improvement of MODIS EvapoTranspiration algorithm for all sky conditions in tropical biomes Open
View article: Guia de Cibersegurança
Guia de Cibersegurança Open
View article: Estimation of the Evapotranspiration of Irrigated Açaí (Euterpe oleracea M.), through the Surface Energy Balance Algorithm for Land—SEBAL, in Eastern Amazonia
Estimation of the Evapotranspiration of Irrigated Açaí (Euterpe oleracea M.), through the Surface Energy Balance Algorithm for Land—SEBAL, in Eastern Amazonia Open
The culture of açaí (Euterpe oleraceae M.), originating from floodplain areas, was planted on dry land in many properties in Pará, Brazil, making necessary the use of irrigation. To irrigate adequately with less waste, it is necessary that…
View article: Assessment of water demands for irrigation using energy balance and satellite data fusion models in cloud computing: A study in the Brazilian semiarid region
Assessment of water demands for irrigation using energy balance and satellite data fusion models in cloud computing: A study in the Brazilian semiarid region Open
Assessment of irrigation in arid and semiarid regions is imperative to ensure the sustainable use of limited water resources and guarantee food production. Therefore, this study aimed to assess actual evapotranspiration – ETa derived from …
View article: Remote Sensing Phenology of the Brazilian Caatinga and Its Environmental Drivers
Remote Sensing Phenology of the Brazilian Caatinga and Its Environmental Drivers Open
The Caatinga is the largest nucleus of Seasonally Dry Tropical Forests (SDTF) in the Neotropics. The leafing patterns of SDTF vegetation are adapted to the current environmental and climate variability, but the impacts of climate change te…
View article: A satellite-based approach to estimating spatially distributed groundwater recharge rates in a tropical wet sedimentary region despite cloudy conditions
A satellite-based approach to estimating spatially distributed groundwater recharge rates in a tropical wet sedimentary region despite cloudy conditions Open
View article: Relationship between photosynthetically active radiation and global radiation in Petrolina and Brasília, Brazil
Relationship between photosynthetically active radiation and global radiation in Petrolina and Brasília, Brazil Open
Photosynthetically active radiation (PAR) comprises the spectral range of global solar radiation (Rs) that is highly related to vegetation productivity. The study aimed to evaluate the relationship between PAR and Rs in Petrolina, PE, and …
View article: ESTIMATIVA DO SALDO DE RADIAÇÃO DO AÇAÍ IRRIGADO POR MEIO DE SENSORIAMENTO REMOTO NO LESTE DA AMAZÔNIA
ESTIMATIVA DO SALDO DE RADIAÇÃO DO AÇAÍ IRRIGADO POR MEIO DE SENSORIAMENTO REMOTO NO LESTE DA AMAZÔNIA Open
ESTIMATIVA DO SALDO DE RADIAÇÃO DO AÇAÍ IRRIGADO POR MEIO DE SENSORIAMENTO REMOTO NO LESTE DA AMAZÔNIA EWELYN REGINA ROCHA SILVA 1; DENILSON BARRETO DA LUZ2; DENIS DE PINHO SOUSA3; LUCAS BELÉM TAVARES4; BERNARDO BARBOSA DA SILVA5 E PAULO J…
View article: Models for determining the daily average air temperature: evaluation and proposal for Brazil
Models for determining the daily average air temperature: evaluation and proposal for Brazil Open
A temperature do ar media diária – TMD (°C) é utilizada em diversas atividades envolvendo pesquisa e planejamento agrícola. O objetivo desta pesquisa foi avaliar a precisão e desempenho de diferentes expressões usadas no cômputo da tempera…
View article: Geotecnologia para Caracterização do Albedo e Temperatura da Superfície no Sertão de Pernambuco, Brasil
Geotecnologia para Caracterização do Albedo e Temperatura da Superfície no Sertão de Pernambuco, Brasil Open
O Sensoriamento Remoto é a ferramenta que viabiliza o monitoramento das feições terrestre por meio de sensores a bordo de satélite, possibilitando uma análise holística e de baixo custo de grandes áreas da superfície terrestre. O presente …
View article: Relationship between photosynthetically active radiation and global radiation in Petrolina and Brasília, Brazil
Relationship between photosynthetically active radiation and global radiation in Petrolina and Brasília, Brazil Open
Photosynthetically active radiation (PAR) comprises the spectral range of global solar radiation (Rs) that is highly related to vegetation productivity. The study aimed to evaluate the relationship between PAR and Rs in Petrolina, PE, and …
View article: DOWNWARD LONGWAVE RADIATION ESTIMATES FOR CLEAR AND ALL-SKY CONDITIONS IN CENTRAL AMAZONIA
DOWNWARD LONGWAVE RADIATION ESTIMATES FOR CLEAR AND ALL-SKY CONDITIONS IN CENTRAL AMAZONIA Open
The downward longwave radiation (L↓), really is difficult of the net radiation the measured values component. Therefore, different parameterizations have been proposed to estimate it. Thus, in this study we evaluated the performance of var…
View article: Application of Spatial Modeling of Biophysical Variables in an Urbanized Area in the Amazon: The Case of the Metropolitan Area of Belém-Pará
Application of Spatial Modeling of Biophysical Variables in an Urbanized Area in the Amazon: The Case of the Metropolitan Area of Belém-Pará Open
The type of land use and land cover plays a decisive role in land surface temperature (LST). As cities are composed of varied covers, including vegetation, built-up areas, buildings, roads and areas without vegetation, understanding LST pa…
View article: Evaluation of gridded meteorological datasets and their potential hydrological application to a humid area with scarce data for Pirapama River basin, northeastern Brazil
Evaluation of gridded meteorological datasets and their potential hydrological application to a humid area with scarce data for Pirapama River basin, northeastern Brazil Open
This work evaluated the simulation of streamflow using observed and estimated gridded meteorological datasets and the Soil and Water Assessment Tool (SWAT) model for a humid area with scarce data in northeastern Brazil. The coefficient of …
View article: Análisis de componentes biofísicos del balance de radiación neta, usando teledetección, en la cuenca hidrográfica de Sorocaba con bosque atlántico intervenido, Brasil
Análisis de componentes biofísicos del balance de radiación neta, usando teledetección, en la cuenca hidrográfica de Sorocaba con bosque atlántico intervenido, Brasil Open
Los ecosistemas forestales, como el bosque atlántico en América del sur, han sido removidos para dar lugar a actividades agropecuarias y asentamiento humanos. Tal situación estaría ocasionando cambios en la absorción de la energía solar en…
View article: Evapotranspiration of banana using the SEBAL algorithm in an irrigated perimeter from the Northeastern Brazil
Evapotranspiration of banana using the SEBAL algorithm in an irrigated perimeter from the Northeastern Brazil Open
The study aimed to estimate the evapotranspiration of banana (Musa spp.) in an irrigated perimeter of the municipality of Barbalha, CE, Brazil, using the Surface Energy Balance Algorithm for Land (SEBAL) model and to compare these results …
View article: Energy balance and evapotranspiration of melon grown with plastic mulch in the Brazilian semiarid region
Energy balance and evapotranspiration of melon grown with plastic mulch in the Brazilian semiarid region Open
Melon plants (Cucumis melo L.) are grown in the state of Rio Grande do Norte (RN), the largest producer of melons in Brazil, with plastic mulch and agrotextiles. Studies of crop evapotranspiration (ET) under these conditions are required t…
View article: Evapotranspiration of banana using the SEBAL algorithm in an irrigated perimeter from the Northeastern Brazil
Evapotranspiration of banana using the SEBAL algorithm in an irrigated perimeter from the Northeastern Brazil Open
The study aimed to estimate the evapotranspiration of banana (Musa spp.) in an irrigated perimeter of the municipality of Barbalha, CE, Brazil, using the Surface Energy Balance Algorithm for Land (SEBAL) model and to compare these results …
View article: Monitoramento da superfície do solo usando indicadores ambientais provenientes de dados de satélite em órbita geoestacionária
Monitoramento da superfície do solo usando indicadores ambientais provenientes de dados de satélite em órbita geoestacionária Open
O satélite de órbita geoestacionária Meteosat-10 fornece indicadores ambientais com alta resolução temporal e baixa resolução espacial, permitindo o monitoramento da fenologia da paisagem. Porém, devido ao alto ângulo de visada do Meteosat…
View article: Wind Speed Variability and Ocean Influences: An Approach for Electrical Energy Generation Purposes in Northeastern Brazil
Wind Speed Variability and Ocean Influences: An Approach for Electrical Energy Generation Purposes in Northeastern Brazil Open
Informações sobre o potencial eólico de uma região são relevantes para o gerenciamento e monitoramento em parques eólicos para fins de geração de energia elétrica. Neste trabalho foram utilizados dados da velocidade do vento a 10 m de altu…
View article: Spatio-temporal patterns of energy exchange and evapotranspiration during an intense drought for drylands in Brazil
Spatio-temporal patterns of energy exchange and evapotranspiration during an intense drought for drylands in Brazil Open
The Caatinga biome, located in the northeastern region of Brazil, is the most populated dryland region on the planet and extremely vulnerable to land degradation due to climatological and anthropogenic factors. Energy partitioning substant…
View article: SWAT PARAMETERIZATION FOR IDENTIFICATION OF CRITICAL EROSION WATERSHEDS IN THE PIRAPAMA RIVER BASIN, BRAZIL
SWAT PARAMETERIZATION FOR IDENTIFICATION OF CRITICAL EROSION WATERSHEDS IN THE PIRAPAMA RIVER BASIN, BRAZIL Open
The aim of this research is to estimate the sediment yield in the Pirapama River Basin and in the area of contribution of the Pirapama Reservoir and to identify areas susceptible to soil erosion for identification of critical erosion water…
View article: Spatial Temporal Change of Land Use and Cover and Estimation of Soil Surface Temperature in the Municipality of Teresina – Piauí, Brazil
Spatial Temporal Change of Land Use and Cover and Estimation of Soil Surface Temperature in the Municipality of Teresina – Piauí, Brazil Open
A expansão urbana promove a supressão vegetal bem como a alteração no balanço de energia, acarretando mudanças climáticas, como por exemplo, a elevação do campo térmico urbano. Nesse sentido, esta pesquisa teve por objetivo investigar, com…
View article: Estimativa da evapotranspiração em área urbana através de imagens digitais TM - Landsat 5
Estimativa da evapotranspiração em área urbana através de imagens digitais TM - Landsat 5 Open
A evapotranspiração (ET) exerce grande relevância no arrefecimento da temperatura do ar e contribui com o equilíbrio climático em área urbana. Entretanto, o conhecimento das taxas de ET voltados para esta finalidade apresentam-se limitados…
View article: SWAT parameterization for identification of critical erosion watersheds in the Pirapama River basin, Brazil
SWAT parameterization for identification of critical erosion watersheds in the Pirapama River basin, Brazil Open
The aim of this research is to estimate the sediment yield in the Pirapama River Basin and in the area of contribution of the Pirapama Reservoir and to identify areas susceptible to soil erosion for identification of critical erosion water…
View article: Evapotranspiration, crop coefficient and water use efficiency of coriander (Coriandrum Sativum l.) grown in tropical environment
Evapotranspiration, crop coefficient and water use efficiency of coriander (Coriandrum Sativum l.) grown in tropical environment Open
The water scarcity is expected to intensify in the future and irrigation becomes an essential component of crop production, especially in arid and semiarid regions, where the available water resources are limited. Four field experiments we…
View article: Experimentation and modeling of soil evaporation in underground dam in a semiarid region
Experimentation and modeling of soil evaporation in underground dam in a semiarid region Open
In semi-arid regions, there is a high evaporation, which leads to soil dryness, interfering in the availability of water in the soil. Usually it is difficult to measure and model the evaporation due to the complexity of the available metho…
View article: Experimentation and modeling of soil evaporation in underground dam in a semiarid region
Experimentation and modeling of soil evaporation in underground dam in a semiarid region Open
In semi-arid regions, there is a high evaporation, which leads to soil dryness, interfering in the availability of water in the soil. Usually it is difficult to measure and model the evaporation due to the complexity of the available metho…
View article: Comparison of the Normalized Difference Vegetation Index (NDVI) Between the Sensors OLI-Landsat Satellite-8 and MSI-Sentinel-2 Satellite in Semi-Arid Region
Comparison of the Normalized Difference Vegetation Index (NDVI) Between the Sensors OLI-Landsat Satellite-8 and MSI-Sentinel-2 Satellite in Semi-Arid Region Open
O uso de técnicas de sensoriamento remoto em apoio aos estudos ambientais se tornou comum nos últimos anos, e a disponibilidade de imagens de satélites de forma gratuita também tem impulsionado esse crescimento. A utilização de imagens orb…
View article: Análise das Mudanças de Parâmetros Biofísicos Sobre o Nordeste Brasileiro de 2002 a 2011 com Dados Modis
Análise das Mudanças de Parâmetros Biofísicos Sobre o Nordeste Brasileiro de 2002 a 2011 com Dados Modis Open
Resumo Este estudo avaliou as mudanças ocorridas no NEB por meio da análise espaço-temporal do albedo, NDVI e Ts obtidas com base no sensor MODIS no período de 2002 a 2011. Os dados obtidos por sensoriamento remoto foram associados a dados…