Results 21 to 30 of about 28,539 (299)

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   +1 more source

Reference evapotranspiration for Londrina, Paraná, Brazil: performance of different estimation methods

open access: yesSemina: 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

A new method of studying the relation between ionization rates and radio-wave absorption in polar-cap absorption events [PDF]

open access: yes, 2005
International audienceDuring polar-cap absorption events, which are caused by the incidence of energetic solar protons, the high-latitude ionospheric D region is extended down to relatively low altitudes. While the incoming proton fluxes may be monitored
Hargreaves, J. K., J. K. Hargreaves
core   +1 more source

Comparison of Four Temperature Based Reference Crop Evapotranspiration Estimation Method at Urmia Lake Basin [PDF]

open access: yesعلوم و مهندسی آبیاری, 2014
The aim of this study is to compare and calibrate of four different temperature based  estimation methods in monthly time scale at Urmia Lake basin. The selected methods were Hargreaves (HG), Thornthwaite (TW), Blaney- Criddle (BC) and Linacre (Lin). For
Omid Babamiri, Yaghoob Dinpazhooh
doaj  

Creating long-term gridded fields of reference evapotranspiration in Alpine terrain based on a recalibrated Hargreaves method [PDF]

open access: yesHydrology and Earth System Sciences, 2016
A new approach for the construction of high-resolution gridded fields of reference evapotranspiration for the Austrian domain on a daily time step is presented.
K. Haslinger, A. Bartsch
doaj   +1 more source

Analysis of seven indirect methods for evaluation of reference evapotranspiration under climate conditions of Serbia [PDF]

open access: yesJournal of Agricultural Sciences (Belgrade), 2018
In order to calculate water deficit of agricultural crops, it is necessary to have an insight into the evapotranspiration process. As for evaluation of reference evapotranspiration, the Penman-Monteith (FAO56-PM) method, suggested by The International ...
Idrizović Dženita F.   +3 more
doaj  

Regionalization of the Hargreaves coefficient to estimate long-term reference evapotranspiration series in SE Spain

open access: yesSpanish Journal of Agricultural Research, 2013
This study employs a methodological approach for estimating long-term series of monthly reference evapotranspiration (ETo) from historical data. To carry it out a regionally calibrated version of the Hargreaves equation was applied at old ordinary ...
J. F. Maestre-Valero   +2 more
doaj   +1 more source

Reading in the digital age

open access: yesJournal of Learning Development in Higher Education, 2022
In 2019, Learning Developers at Lancaster University were awarded funding by ALDinHE to conduct a small project into how students read (Hargreaves et al., 2022a).
Sarah Robin   +2 more
doaj   +1 more source

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

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   +1 more source

Reference Evapotranspiration by Hargreaves and Modified Hargreaves Equations under Semi-Arid Environment [PDF]

open access: yesCurrent Research in Agricultural Sciences, 2020
The Penman-Monteith (FAO-56 PM) ETo equation is considered as the standard ETo equation to estimate reference evapotranspiration (ETo) under all the weather conditions of the world. But there are many regions of the globe where all the climatic data is not available to evaluate FAO-56 PM ETo equation.
Muhammad Hafeez   +5 more
openaire   +1 more source

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