Results 11 to 20 of about 35,573 (203)

HS Cal software for the calibration of the Hargreaves-Samani equation [PDF]

open access: yesPesquisa Agropecuária Brasileira, 2019
: The objective of this work was to develop a software (HS Cal) to calibrate the Hargreaves-Samani equation for specific periods of the year, in global, seasonal, and monthly time scales, as well as to compare the performance of calibrated and non ...
Lucas Borges Ferreira   +3 more
doaj   +5 more sources

Calibration methods for the Hargreaves-Samani equation [PDF]

open access: yesCiência e Agrotecnologia, 2018
The estimation of the reference evapotranspiration is an important factor for hydrological studies, design and management of irrigation systems, among others.
Lucas Borges Ferreira   +4 more
doaj   +5 more sources

Estimating reference evapotranspiration using the Hargreaves - Samani formula for end-user applications [PDF]

open access: yesE3S Web of Conferences
Reference evapotranspiration is one of the main geophysical parameters, the reliable assessment of which is important in irrigation water management, planning, distribution and regulation of water resources.
Masaliyeva Zilola   +2 more
doaj   +3 more sources

Parametrização da equação de Hargreaves e Samani para estimativa da evapotranspiração de referência no Estado do Ceará, Brasil

open access: yesRevista Ciência Agronômica, 2016
RESUMO O modelo de Hargreaves e Samani é utilizado na estimativa da evapotranspiração de referência, sendo muito útil para o manejo da irrigação, sendo o mesmo considerado de uso prático, pois utiliza elementos meteorológicos de fácil obtenção como a ...
Juarez Cassiano de Lima Junior   +4 more
doaj   +4 more sources

Análise da sensibilidade dos componentes da equação de Hargreaves - Samani para a região de Bebedouro - SP [PDF]

open access: yesRevista Brasileira de Meteorologia, 2014
A estimativa da evapotranspiração de referência (ETo) subsidia os cálculos de consumo de água na agricultura irrigada. O uso de metodologias mais simples são comuns, porém devem ser criteriosamente estudadas. No presente estudo avaliou-se a sensibilidade
Luiz Fabiano Palaretti   +2 more
doaj   +2 more sources

Modified Hargreaves-Samani Equation for the Assessment of Reference Evapotranspiration in Alpine River Basins [PDF]

open access: yesJournal of Irrigation and Drainage Engineering, 2012
AbstractDeriving accurate estimates of reference evapotranspiration is required for water resource management, irrigation water requirement computations, and successful hydrological modeling. The Food and Agricultural Organization of the United Nations (FAO) recommended the Penman-Monteith equation as the standard for estimating reference ...
RAVAZZANI, GIOVANNI   +4 more
openaire   +4 more sources

ESTIMATION OF POTENTIAL EVAPOTRANSPIRATION WITH HARGREAVES-SAMANI MODEL AT VARIOUS LOCATIONS IN PUERTO RICO [PDF]

open access: yesThe Journal of Agriculture of the University of Puerto Rico, 1991
ESTIMATION OF POTENTIAL EVAPOTRANSPIRATION WITH HARGREAVES-SAMANI MODEL AT VARIOUS LOCATIONS IN PUERTO ...
null M. R. Goyal, null C. Chao de Báez
openaire   +3 more sources

A new approach to evaluation and recalibration of the reference evapotranspiration models based on pan evaporation for Iran’s coastal regions [PDF]

open access: yesScientific Reports
One of the most important challenges for the reference evapotranspiration (ETo) estimation is the selection of the best model. Since all of the ETo models are empirical, there is no an explicit benchmark model to evaluate the others.
Navid Gholampoor   +2 more
doaj   +2 more sources

An evolutionary parsimonious approach to estimate daily reference evapotranspiration [PDF]

open access: yesScientific Reports
The reference evapotranspiration (ETo) is an essential component in hydrological and ecological processes. The objective of this research is to develop an explicit model to estimate ETo only using commonly measurable meteorological parameters such as ...
F. Javier Ruiz-Ortega   +3 more
doaj   +2 more sources

Improvement of Hargreaves–Samani Reference Evapotranspiration Estimates with Local Calibration [PDF]

open access: yesWater, 2019
Improving irrigation water management is an important asset when facing increased water shortages. The Hargreaves–Samani (HS) method is a simple method that can be used as an alternative to the Penman–Monteith (PM) method, which requires only temperature measurements for estimating reference evapotranspiration (ETo).
Daniel Althoff   +4 more
openaire   +2 more sources

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