Results 21 to 30 of about 35,573 (203)
Método de Penman-Monteith e Hargreaves-Samani para obtenção da ETo em ano chuvoso e seco
Revista Verde de Agroecologia e Desenvolvimento Sustentável, 2020 O planejamento e aproveitamento da água na produção agrícola, bem como o desenvolvimento de metodologias que permitam estimar o correto volume de água são fundamentais para o estabelecimento de planos eficientes de irrigação, evitando o desperdício.
Erllan Tavares Costa Leitão +5 more
doaj +3 more sources
Penman-Monteith with missing data and Hargreaves-Samani for ETo estimation in Espírito Santo state, Brazil [PDF]
Revista Brasileira de Engenharia Agrícola e Ambiental, 2019 ABSTRACT The Penman-Monteith method (PM-FAO) is recommended as standard for calculation of reference evapotranspiration (ETo). However, its use requires a series of meteorological variables that is not normally available, restricting its application in many locations.
Luan P. Venancio +5 more
core +7 more sources
A single hybrid parameter-based model for calibrating hargreaves-samani coefficient in Nigeria
International Journal of Physical Research, 2017 The present research was designed to locally calibrate Hargreaves-Samani computing model (HS) in twenty-one (21) locations with their corresponding coastal and interior regions in Nigeria employing a single hybrid parameter-based model to obtain the adjusted Hargreaves-Samani coefficient (AHC) for Nigerian environment.
Samuel Nwokolo, Julie Ogbulezie
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Spatio-temporal calibration of Hargreaves–Samani model in the Northern Region of Nigeria [PDF]
Theoretical and Applied Climatology, 2021 Abstract One of the significant components of the hydrological cycle is evapotranspiration. Monthly meteorological parameters of 35 years from 19 meteorological stations across the Northern Region of Nigeria (NRN) were obtained and utilized for the calibration of Hargreaves–Samani (HS) model by comparing between potential evapotranspiration (ETo ...
Akinwale T. Ogunrinde +4 more
openaire +3 more sources
An Introduction to the Hyperspace of Hargreaves-Samani Reference Evapotranspiration [PDF]
Sustainability, 2018 Climate change has been shown to directly influence evapotranspiration, which is one of the crucial watershed processes. The common approach to its calculation is via mathematical equations, such as 1985 Hargreaves-Samani (HS85). It computes reference evapotranspiration (ETo) through three climatic variables and one constant: RA (extra-terrestrial ...
Naim Haie, Rui M. Pereira, Haw Yen
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Estimation of Reference Evapotranspiration using Regionally Calibrated Hargreaves-Samani Equation [PDF]
, 2022 Evapotranspiration (ETO) is a significant module in water-balance, irrigation scheduling and estimation of crop water requirement models. ETO can be adequately assessed when meteorological data are accessible to implement robust and strong models such as
Mamoon ur Rasheed
core +3 more sources
Parametric calibration of the Hargreaves–Samani equation for use at new locations [PDF]
Hydrological Processes, 2012 AbstractThe Hargreaves–Samani (HS) evapotranspiration equation is very useful for the on‐site irrigation management in data‐short situations such as small and midsize farms and landscaped areas. Although much work has been performed to improve the precision of the evapotranspiration (ETo) estimates for use at new locations, the results have not been ...
Shahidian, Shakib +3 more
openaire +2 more sources
Modifying Hargreaves–Samani equation with meteorological variables for estimation of reference evapotranspiration in Turkey [PDF]
Hydrology Research, 2016 The Food and Agriculture Organization advocates the Penman–Monteith (FAO-56 PM) equation as the standard model for estimation of the reference evapotranspiration (ET0) because it is considered to have better accuracy. However, in regions where meteorological variables such as solar radiation, wind speed, and relative humidity are not gauged, the ...
Kisi, Ozgur +3 more
openaire +2 more sources
Semina: Ciências Agrárias, 2017 Aiming at assessing the performance of alternative methods to Penman-Monteith FAO56 for estimating the reference evapotranspiration (ETo) for Londrina, Paraná, Brazil, the methods temperature radiation, Hicks-Hess, Hargreaves-Samani (1982), Turc ...
Rodrigo Dlugosz da Silva +4 more
doaj +1 more source
POTENTIAL EVAPOTRANSPIRATION FOR VIEQUES ISLAND, PUERTO RICO, WITH THE HARGREAVES AND SAMANI MODEL [PDF]
, 1988 POTENTIAL EVAPOTRANSPIRATION FOR VIEQUES ISLAND, PUERTO RICO, WITH THE HARGREAVES AND SAMANI MODELPOTENTIAL EVAPOTRANSPIRATION FOR VIEQUES ISLAND, PUERTO RICO, WITH THE HARGREAVES AND SAMANI ...
core +1 more source