Para um bom manejo de irrigação dos cultivos agrícolas a determinação da evapotranspiração é indispensável. Pensando nisso objetivou-se com este estudo comparar e avaliar o desempenho estimativa referência (Eto) pelos métodos Hargreaves-Samani, Makkink, Budyko, Turc, Jensen-Haise, Linacre, Kharrufa, Radiação FAO24 em relação ao método padrão Penman-Monteith/FAO no período seco chuvoso, Imperatr...

Abstract Evapotranspiration in the hydrologic cycle realizes energy and water transport atmosphere. differences concerning land-use types provide data for studying evapotranspiration of river basins. To investigate reservoir under artificial regulation, we selected basin Sanmenxia Reservoir as study area. Data sources are two-period Landsat8 OIL_TIRS remote sensing images during growing season ...

Accurate estimation of reference evapotranspiration (ETo) plays a vital role in irrigation and water resource planning. The Penman–Monteith method recommended by the Food Agriculture Organization (FAO PM56) is widely used considered standard to calculate ETo. However, FAO PM56 cannot be with limited meteorological variables, so it compulsory choose an alternative model for ETo estimation, which...

The study was conducted to evaluate performance of artificial neural network (ANN) models for estimating reference evapotranspiration (ET0) semi-arid region Haryana state. Ten years (2011-2020) daily weather data maximum and minimum temperature, relative humidity, wind speed sun shine hours collected from the meteorological observatory at CCS HAU, Hisar. Multilayer perceptron feed forward back ...

Determination of crop water requirement is one the key parameters for precise irrigation scheduling, especially under limited resources, such as in Egypt. Hence, an accurate estimation reference evapotranspiration (ETo) a vital factor agriculture production, therefore objectives present study were to influence climate change on different seasons and comparing ETo estimations using Blany- Criddl...

Abstract The potential evapotranspiration is considered as an important element of the hydrological cycle, which plays role in agricultural studies, management plans irrigation and drainage networks, hydraulic structures. Estimating reference particular climatic regions at different time scales, one most atmospheric parameters, a importance optimal use resources. series analysis method, GARCH m...

Su kaynaklarının planlanması ve tarımsal su yönetimi için referans bitki tüketiminin (ET0) doğru tahmin edilmesi oldukça önemlidir. Bu çalışmada üç farklı makine öğrenimi yönteminin, yapay sinir ağları (YSA), rassal ağaç (RT) gauss süreç regresyonu (GPR), yarı nemli iklim koşullarına sahip bir bölgeden alınan verileri kullanılarak günlük ET0’ı etme performansları araştırılmıştır. Modelleri eğit...

Reference evapotranspiration (ET0) plays an irreplaceable role in regional dry/wet 15 conditions under the background of climate change. Based on the FAO Penman-Monteith method 16 and daily climate variables, ET0 was calculated for 22 stations in and around Songnen Grassland, 17 northeast China, during 1960-2014. The temporal and spatial variations of ET0 and precipitation (P) 18 were comprehen...

In this study, ETo was calculated using FAO-56 Penman Monteith method. Lag-1 autocorrelation coefficient was performed to detect the presence of serially correlation in data series. Mann-Kendall (MK) or Modified Mann Kendall (MMK) and Spearman’s rho test were applied to detect the trend in annual and monthly ETo at 8 districts over 49 years (1960–2008) in the Soenath river basin, Chhattisgarh (...