professor of higher education in different areas of study. Specialized in the area of remote sensing, geoprocessing, energy balance in the terrestrial surface and water resources.
The use of remote sensing satellite in conjunction with models and meteorological data enable the... more The use of remote sensing satellite in conjunction with models and meteorological data enable the mapping of biophysical properties of agroecosystems with satisfactory accuracy. The main goal of this research was to determine the spatial-temporal agro-ecological indicators of water productivity in watersheds with different types of land use and occupation, using Landsat 8 images, agro-meteorological stations and application of Monteith and SAFER (Simple Algorithm for Retrieving Evapotranspiration) models to estimate the production biomass (BIO) and the actual evapotranspiration (ET), respectively. Incident global solar radiation (RS ↓) is observed seasonality of radiation during the year. Higher RS ↓levels happen during the first and the last four months, when the Sun is around its zenith positions in the study region. During the natural dry period in the region, the RS ↓ is lower because winter solstice time for the Southern Hemisphere, this condition it is verified the reducing in the values of ET and BIO. Average values of biophysical properties for the study period were 0.54, 0.16 and 301 K for Normalized Difference Vegetation Index, albedo and surface temperature, respectively. The highest value of BIO was 105 kg ha -1 d -1 and occurred in July 2013. The lowest value was 15.9 kg ha -1 d -1 and occurred in October 2014. ET showed a value of 1.65 mm d -1 in the rainy period and 0.64 during the dry period in the study area. The highest average ET occurred in the irrigated area (June 2014), with a value of 1.89 mm d -1 and a maximum of 2.46 mm d -1 . WP average for the evaluated period was 3.06 Kg m -3 , with the largest value of 4.91 Kg m -3 in June 2013 and a minimum value of 2.45 Kg m -3 in September 2013.
O sensoriamento remoto possibilita a quantifi cação dos componentes do balanço de radiação e ener... more O sensoriamento remoto possibilita a quantifi cação dos componentes do balanço de radiação e energia em larga escala, estimando os parâmetros biofísicos da superfície terrestre por meio de algoritmos que fornecem informações para a construção de modelos ambientais. O presente estudo teve como objetivo quantifi car as variações espaciais e temporais do balanço de radiação e energia em larga escala, no noroeste do Estado de São Paulo, durante o período 1996 a 2010, com o uso de dados agrometeorológicos, imagens Landsat TM-5 e aplicação do modelo SAFER (Simple Algorithm For Evapotranspiration Retrieving). O albedo de superfície (α 0 ), temperatura da superfície (T 0 ) e Índice de Vegetação da Diferença Normalizada (NDVI) foram os parâmetros de entrada obtidos por sensoriamento remoto. Os valores médios diários dos pixels de radiação solar global incidente, radiação solar de onda curta refl etida, radiação solar de onda longa incidente e radiação solar de onda longa emitida foram 21,20 MJ m -2 d -1 ; 3,55 MJ m -2 d -1 ; 32,04 MJ m -2 d -1 e 39,47 MJ m -2 d -1 , respectivamente. A fração de R G transformada em saldo de radiação (R n ) apresentou valor máximo de 55% e mínimo de 37% com média de 46%. Os valores médios de fl uxo de calor latente (λE) diários apresentaram um incremento de 153,2% no período, sendo as áreas irrigadas responsáveis por esse aumento. As médias da partição de energia em λE e no fl uxo de calor sensível (H) foram de 35% e 68%, respectivamente.
Aiming to subsidize the rational water resources management, four Landsat 8 (L8) images along dif... more Aiming to subsidize the rational water resources management, four Landsat 8 (L8) images along different conditions of the year 2014 were used for modeling the radiation and energy balances in the mixed agroecosystems inside a Brazilian reference semiarid area. The SAFER algorithm was applied to calculate the latent heat flux (λE); net radiation (R n ) was acquired by the Slob equation; ground heat flux (G) was considered a fraction of R n ; and the sensible heat flux (H) was retrieved by residue in the energy balance equation. For classifying the vegetation, the surface resistance algorithm (SUREAL) was used to estimate the surface resistance to the water fluxes (r s ) with threshold values for r s . Clearly, one could see higher λE values from irrigated crops (ICs) than those for natural vegetation (NV) with some situations of heat horizontal advection. The respective λE, H, and G average ratios to R n for the ICs ecosystem were 64% to 79%, 18% to 28%, and 3%, respectively. For the NV ecosystem, the corresponding fractions were 4% to 37%, 60% to 94%, and 4%, respectively. The algorithms proved to have strong sensibility to quantifying the large-scale energy and mass exchanges by applying L8 images in mixed agroecosystems of semiarid environments.
The Cabeceira Comprida stream's watershed, located in Santa Fé do Sul, Brazil, is an agroecosyste... more The Cabeceira Comprida stream's watershed, located in Santa Fé do Sul, Brazil, is an agroecosystem with great demand of water for the population and agriculture. During the dry season the water demand exceeds the amount generated by the watershed. It is important to know the dynamics of the water above the ground to improve the water resources management. Ten Landsat 8 images were used combined with Northwestern São Paulo State Weather Network data under different thermohydrological conditions of the year 2014 to quantify actual evapotranspiration (ET a ), biomass production (BIO) and water productivity (WP) based on ET a . Using the Simple Algorithm for Retrieving evapotranspiration (SAFER) for calculating ET a , the Monteith's radiation model was applied for estimating the BIO and for calculation of WP the ratio of BIO and ET a . The average pixels for ET a , BIO and WP ranged respectively from 0.38 ± 0.35 to 2.05 ± 0.76 mm day -1 ; 10.15 ± 12.19 to 71.61 ± 35.54 kg ha -1 day -1 ; 1.89 ± 0.76 to 3.88 ± 0.86 kg m -3 . The lower values of ET a (0.38 mm day -1 ; DOY 220), BIO (10.15 kg ha -1 day -1 ; DOY 220) and WP (1.89 kg m -3 ; DOY 204) were obtained in winter, and highest values of ET a (2.05 mm day -1 ; DOY 364) and BIO (71.64 kg ha -1 day -1 ; DOY 364) in the summer and WP (3.88 kg m -3 ; DOY 92) in the autumn. The water productivity components can subsidize the monitoring of the agro-ecosystems, being a useful tool to quantify the annual variability of ET a and BIO.
Remote Sensing for Agriculture, Ecosystems, and Hydrology XVIII, 2016
In the northwestern side of the São Paulo state, Brazil, irrigated areas are expanding, because r... more In the northwestern side of the São Paulo state, Brazil, irrigated areas are expanding, because rainfall is not enough to supply the crop water requirements. Under the actual climate and land-use change scenarios, large-scale evapotranspiration (ET) and biomass production (BIO) acquirements are relevant. Eleven Landsat 8 images, from May 2013 to October 2014, were used together with a net of eight agrometeorological stations for modelling these water productivity (WP) parameters in the main agricultural growing irrigated areas inside three hydrological basins in this region. Some of these areas inside of each basin were highlighted for more in-depth WP analyses. The SAFER algorithm estimated the ratio of actual (ET) to reference (ET0) evapotranspiration and this ratio was used for both, to calculate ET and to include the soil moisture effects in the Monteith's Radiation Use Efficiency (RUE) model. The highlighted agricultural growing regions were Paranapuã, Populina and Santa Rita d'Oeste in the Turvo/Grande basin; Rubinéia, Santa Fé do Sul, Suzanópolis and Ilha Solteira, in the São José dos Dourados basin; and Pereira Barreto and Sud Mennucci, in the Baixo Tietê basin. The highest averages of both ET (1.7 ± 0.9 mm d -1 ) and BIO (47 ± 31 kg ha -1 d -1 ) were for Ilha Solteira, while the lowest ones happened in Sud Mennucci (1.3 ± 0.7 mm d -1 and 40 ± 27). These ET and BIO ranges returned WP values varying from 2.2 ± 0.6 to 2.6 ± 0.8 kg m -3 , with the higher end of this range happening in the Turvo/Grande hydrological basin. Considering the annual time-scale, crops will consume around 770, 828 and 786 mm yr -1 with the corresponding BIO values of 27, 26 and 25 t ha -1 yr -1 , respectively in Turvo/Grande, São José do Dourados and Baixo Tietê. It was concluded that increments in agricultural irrigated areas should be stimulated in the northwestern side of the state, mainly in the first basin, to retrieve good yield with less water use.
The region of Ilha Solteira, in the Northwestern of São Paulo State, has been undergoing signific... more The region of Ilha Solteira, in the Northwestern of São Paulo State, has been undergoing significant changes in agricultural land use and cover since 2006, as pasture fields have been replaced by sugarcane crop. This drastic change can lead to a disturbance in the energy balance, affecting the local climate. The aim of this paper was to assess some parameters related to the energy balance of Ipê´s watershed, that changed since no sugarcane cultivation in 2006 to 2,164 hectares in 2011, occupying 31% of the catchment area with this important energy crop for the economy and the environment of Brazil. This study was carried out using remote sensing combined with weather data and using the SAFER (Simple Algorithm for Retrieving Evapotranspiration) model applied in 9 Landsat images collected between 2003 and 2011. The results showed a wide variation between the components of energy balance and when considering only the sugarcane crop were verified the increase values of ETa (Actual Evapotranspiration), H/Rn (Sensible Heat Flux/Net Radiation), TS (Surface Temperature), Rl↑ (Emitted longwave), Rl↓ (Incidente longwave) and surface albedo after the sugarcane production over these years. On the other hand, the NDVI, λE/Rn (Latent Heat Flux/Net Radiation) and Rn values (data) decreased in the same period. Also there was satisfactory correlation between NDVI and ETa. The SAFER model showed satisfactory results for studies of energy balance applied in the Northwestern of São Paulo State.
Revista Brasileira de Engenharia Agrícola e Ambiental, 2017
The Cabeceira Comprida stream’s watershed, located in Santa Fé do Sul, São Paulo state, has great... more The Cabeceira Comprida stream’s watershed, located in Santa Fé do Sul, São Paulo state, has great environmental importance. It is essential for supplying water to the population and generating surpluses for sewage dilution. This study aimed to evaluate the annual performance of the components of water productivity from Landsat-8 images of 2015, using the Simple Algorithm for Evapotranspiration Retrieving (SAFER), calculating the actual evapotranspiration (ETa), biomass (BIO) and water productivity (WP). The annual averages of ETa, BIO and WP were 1.03 mm day-1, 36.04 kg ha-1 day-1 and 3.19 kg m-3, respectively. The average annual values of ETa for land use and occupation were 1.40, 1.23, 1.05, 0.97 and 1.08 mm day-1 for the remaining forest (RF), invasive species (IS), pasture (Pa), annual crop (AC) and perennial crop (PC), respectively, with BIO of 57.64, 46.10, 36.78, 32.69, 40.03 kg ha-1 day-1 for RF, IS, Pa, AC and PC, respectively, resulting in WP of 3.94, 3.59, 3.25, 3.09, 3.3...
Revista Brasileira De Agricultura Irrigada Rbai, Apr 10, 2013
Para realizar a irrigação, além de considerar a disponibilidade hídrica, torna-se importante, con... more Para realizar a irrigação, além de considerar a disponibilidade hídrica, torna-se importante, considerar a qualidade da água, pois a presença, em excesso, de alguns íons e partículas de diversas origens como as do solo podem causar danos ao sistema de irrigação, através de obstrução da tubulação e de emissores. Portanto, o presente trabalho teve por objetivo avaliar a qualidade de água para a irrigação no Córrego do Cinturão Verde, localizado na cidade de Ilha Solteira. Com os resultados obtidos das análises de cálcio, magnésio, sólidos dissolvidos e sólidos em suspensão pode-se concluir que a água do Córrego do Cinturão Verde pode ser utilizada para a irrigação, pois o os parâmetros analisados, com exceção do ferro, estão dentro do valor aceitável. No caso do ferro, os valores observados estão bem acima do limite permitido, o que confere alto potencial de danos ao desempenho do sistema de irrigação. Logo, produtores que utilizarem esta água devem ter atenção com o uso de filtros para evitar a deposição de ferro na tubulação do sistema. PALAVRAS-CHAVE: monitoramento hídrico, ferro, perda de carga
Avalia��o Da Qualidade F�sica Da �gua Para Fins De Irriga��o No C�rrego Do Ip�, Ilha Solteira-SP
RESUMO: A irriga????o ?? um importante insumo que garante que uma cultura n??o sofrer?? d??ficit ... more RESUMO: A irriga????o ?? um importante insumo que garante que uma cultura n??o sofrer?? d??ficit h??drico que afetar?? a sua produtividade potencial eo do C??rrego do Ip??, munic??pio de Ilha Solteira???SP, pode ser uma op????o ao fornecimento de ??gua para as diferentes ...
Water productivity (WP) of various classes of soil usage from watersheds was estimated using the ... more Water productivity (WP) of various classes of soil usage from watersheds was estimated using the SAFER -Simple Algorithm For Evapotranspiration Retrieving -algorithm and the Monteith equation to estimate the parameters of biomass production (BIO). Monteith's equation is used to quantify the absorbed photosynthetically active radiation (APAR) and Actual Evapotranspiration (ET) was estimated with the SAFER algorithm. The objective of the research is to analyze the spatial-temporal water productivity in watersheds with different uses and soil occupation during the period from 1996 to 2010, in conditions of drought and using the Monteith model to estimate the production of BIO and using the SAFER model for ET. Results indicated an increase of 153.2% in ET value during the period 1997-2010, showing that the irrigated areas were responsible for this increase in ET values. In September 2000, image of day of year (DOY) 210 showed high values of BIO, with averages of 80.67 kg ha -1 d -1 . In the year 2010 (DOY:177), the mean value of BIO was 62.90 kg ha -1 d -1 , with an irrigated area with a maximum value of 227.5 kg ha -1 d -1 . The highest incremental values of BIO is verified from the start of irrigated areas equal to the value of ET, because there is a relationship between BIO and ET. The maximum water productivity (WP) value occurred in June/2001, with 3,08 kg m -3 , the second highest value was in 2010 (DOY:177), with a value of 2,97 kg m -3 . Irrigated agriculture show the highest WP value, with maximum value of 6.7 kg m -3 . The lowest WP was obtained for DOY 267, because of the dry season with condition of low soil moisture.
Revista Brasileira De Agricultura Irrigada Rbai, Apr 10, 2013
O objetivo deste trabalho foi avaliar a concentração de ferro total, sólidos suspensos, dissolvid... more O objetivo deste trabalho foi avaliar a concentração de ferro total, sólidos suspensos, dissolvidos, totais e turbidez na água do Córrego do Coqueiro. Para isso, foram coletadas amostras de água ao longo do rio principal, mensalmente no período de 2007 a 2009 em 5 pontos georreferenciados. Conforme os resultados apresentados, o manancial possui baixo potencial de causar danos ao sistema de irrigação para os parâmetros físicos, no entanto, devido a concentração de ferro na água o manancial apresentou médio a alto potencial de risco ao sistema de irrigação, sendo assim, a utilização de sistemas de irrigação sem filtragem, principalmente nos sistemas localizados, pode causar risco de obstrução de tubulações e emissores, principalmente nos pontos finais do manancial. Palavras-chave: degradação, obstrução, monitoramento.
The use of satellite imagery has been very useful when we need to obtain data from large surface ... more The use of satellite imagery has been very useful when we need to obtain data from large surface areas because of its speed and convenience. Determine the surface temperature for a given region is of paramount importance to support research or monitoring strategize regarding the use and availability of water, as well as the use and occupation of land, indicating how management applied to the ecosystem interfering with the environment same. The objective of this study is to measure the surface temperature of the watershed stream Cabeceira Comprida, located in Santa Fé do Sul, in northwestern São Paulo, using scenes from the TIRS sensor onboard Landsat 8 satellite, provided by NASA / USA, on your website. For processing the ARCGIS software was used to determine the surface temperature of a small watershed, and it was concluded that vegetated surfaces have lower temperatures than bare soil. Palavras-chave: ARCGIS, Image processing, Landsat 8, remote sensing. ARCGIS, Landsat 8, noroeste...
Aplicação do algoritmo SAFER na determinação da evapotranspiração em condições de sazonalidade climática no noroeste paulista
Satellite data represent good input information for estimating surface radiation balance in using... more Satellite data represent good input information for estimating surface radiation balance in using remote sensing data together with agrometeorological data it is possible to determine the evapotranspiration (ET) in large scale, being based largely on the energy balance theories. The study aimed to estimate the temporal variation of regional flows of the surface radiation balance at different types of agroecosystems through the SAFER (Simple Algorithm for Retrieving Evapotranspiration) algorithm and seasonal climatic conditions in northeastern São Paulo. The highest rates of λE/R n occurred on Julian day 171 and the lowest in Julian day 251. The highest H/R n occurred on day 251 and day 171 the smallest. The largest variations in the daily evapotranspiration occurred in the dry season and lowest after the rainy season in the region. Keywords: remote sensing, sensible heat flux, latent heat flux sensoriamento remoto, fluxo de calor sensível, fluxo de calor latente 1. Introdução Para o...
Avaliação temporal e espacial do balanço de energia na microbacia do córrego do Ipê, no município de Ilha Solteira face a mudança de uso do solo
The region of Ilha Solteira, which is a municipality located in the northwest of São Paulo state,... more The region of Ilha Solteira, which is a municipality located in the northwest of São Paulo state, has been undergoing significant changes in agricultural land use and land cover since 2006, as pasture fields have been replaced by sugarcane plantations. This drastic change can lead to a disturbance in the energy balance, which can also affect the local climate. In this context, the main aim of this paper is to assess some parameters related to the energy balance of the Córrego do Ipê, which is a watershed located in the Ilha Solteira county. This study has been carried out using remote sensing techniques together with the SAFER algorithm applied to 9 images collected between 2003 and 2011. The results show that the values of Etr, H/Rn, TS, and surface albedo increased after the plantation sugarcane production over these years. On the other hand, the NDVI and λE/Rn values (data) decreased in the same period. The change in these parameters can be addressed to the expansion of sugarcane...
Environmental indicators and integrated planning of water resources in the watershed of the stream of Coqueiro
With economic and technological advancement, natural ecosystems have been replaced by agroecosyst... more With economic and technological advancement, natural ecosystems have been replaced by agroecosystems and urban landscape. This process begins with the partial replacement of native vegetation by fields of crops, or pasture, need for the food production, fiber and other agricultural products. Food production is dependent on environmental resources, especially water. The watershed of Coqueiro, in northwestern São Paulo is dependent on water resources for the production of grapes and citrus, as well as public water supply to serve the cities of Palmeira d’Oeste and Marinópolis. From the environmental characterization, the study aims to make a diagnosis of the environmental resources of the watershed through technology tools and present a proposal for integrated planning of water resources in the watershed. The evaluation quality and disponibility of water occurred in the years 2006, 2007, 2008 and 2009 and for the environmental characterization geoprocessing techniques and GIS were use...
Uso do satélite Landsat 8 na determinação da produtividade da água em bacia hidrográfica com predomínio do uso agrícola da cana-de-açúcar, 2015
Uso do satélite Landsat 8 na determinação da produtividade da água em bacia hidrográfica com pred... more Uso do satélite Landsat 8 na determinação da produtividade da água em bacia hidrográfica com predomínio do uso agrícola da cana-de-açúcar Abstract. Understanding temporal and spatial variability of the parameters of water productivity in plantations of sugar cane became a very important issue in the context of water use and climate change. The objective of the research is to analyze the spatial-temporal parameters of the water of productivity in the watershed occupied by the culture of sugar cane through the incorporation of agro-meteorological data and remote sensing. The algorithm used to calculate evapotranspiration was SAFER (Simple Algorithm For Evapotranspiration Retrieving)and the Monteith equation to estimate the parameters of biomass production (BIO). Monteith's equation is used to quantify the absorbed photosynthetically active radiation (APAR) and Actual Evapotranspiration (ET) was estimated with the SAFER algorithm. Spatial variation of the BIO for sugarcane was 20.1...
RESUMO A região de cerrado apresenta fator limitante na produção devido às condições climáticas e... more RESUMO A região de cerrado apresenta fator limitante na produção devido às condições climáticas e por apresentar solos com baixa fertilidade. O objetivo foi avaliar o efeito do boro, zinco e molibdênio em grãos de ervilha. Foram utilizados grãos de ervilha da cultivar Utrillo, obtidos do cultivo na área experimental da Fazenda de Ensino e Pesquisa da Faculdade de Engenharia da UNESP, Campus de Ilha Solteira. Os oito tratamentos constaram das combinações entre aplicação de zinco (Zn), boro (B) e molibdênio (Mo), ou seja, Testemunha, Zn+B+Mo, Zn+B, Zn+Mo, B+Mo, B, Mo, Zn. O Mo foi aplicado via foliar aos 20 dias após a emergência (DAE). O B e o Zn foram aplicados também via foliar aos 30 DAE. O delineamento experimental foi em blocos casualizados com quatro repetições, a análise de significância pelo teste de Duncan a 5%. Analisou-se a produtividade, o conteúdo de proteínas, carboidratos e aminoácidos. Os resultados indicaram que os tratamentos não alteram significativamente nenhum do...
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