Results 51 to 60 of about 35,573 (203)

CALIBRATION OF THE HARGREAVES-SAMANI EQUATION FOR SPECIFIC PERIODS OF THE YEAR IN THE MUNICIPALITY OF JAÍBA-MG, BRAZIL [PDF]

open access: yesREVISTA ENGENHARIA NA AGRICULTURA - REVENG, 2017
Reference evapotranspiration (ET0) explains the climatic effects on crop water demand. The Food and Agriculture Organization (FAO) recommends the Penman Monteith equation as a standard method for estimating ET0. However, because this equation requires a large amount of meteorological data, it has limited application.
Duarte, Anunciene Barbosa   +2 more
openaire   +2 more sources

Comparative analysis and local calibration of evapotranspiration models in Tikrit city, Iraq

open access: yesSamarra Journal of Engineering Science and Research
Accurate estimation of reference evapotranspiration (ET˳) is important for water resource management in arid regions such as Tikrit city. This study evaluates the performance of three models such as Penman-Monteith (PM) model FAO-56, the Hargreaves ...
Akram K. Mohammed
doaj   +1 more source

Estimativa de evapotranspiração de referência (ETO) por diferentes fórmulas empíricas no município de Confresa-MT

open access: yesRevista PesquisAgro, 2022
A evapotranspiração de referência (ETo) é importante para a agricultura irrigada e sua relação com o Kc da cultura determina a Evapotranspiração da cultura (ETc).
Kleber Oliveira da Silva   +3 more
doaj   +1 more source

Machine Learning‐Based Estimation of Reference Evapotranspiration and Crop Coefficients for Wheat Under Diverse Climatic Conditions

open access: yesIrrigation and Drainage, Volume 75, Issue 4, Page 1574-1591, Otober 2026.
ABSTRACT Accurate estimation of reference evapotranspiration (ET0) and crop coefficients (Kc) is critical for irrigation planning, particularly in data‐limited regions where agriculture dominates freshwater consumption. Although machine learning (ML) methods have been widely applied to ET0 and Kc estimation, most studies address these parameters ...
Ilker Angin   +4 more
wiley   +1 more source

Climatic Drivers of the Area Burned by Winter Wildfires in Northern Italy

open access: yesInternational Journal of Climatology, Volume 46, Issue 12, October 2026.
This study investigates winter wildfires occurring between November and April in northern Italy over the period 2008–2022. By integrating high‐resolution burned‐area data with gridded climatic indices derived from 150 weather stations, it identifies spatial and temporal wildfire patterns, highlights the most fire‐prone mountain areas through pixel ...
Alice Baronetti   +2 more
wiley   +1 more source

Unpacking the Farmland Capitalization Effect of Ethanol Establishment

open access: yesApplied Economic Perspectives and Policy, Volume 48, Issue 4, Page 1185-1200, September 2026.
ABSTRACT We unpack the impact of expansions in ethanol production—as measured by proximity to newly constructed ethanol plants and capacity expansions—on farmland values using land transaction data from Kansas in combination with modern causal inference techniques.
Gabriel S. Sampson, Jisang Yu
wiley   +1 more source

Evaluating Reference Evapotranspiration (ETo) Calculation Methods and Quantifying Climate‐Driven Change in Irrigation Demand Across Nepal's Terai

open access: yesInternational Journal of Climatology, Volume 46, Issue 11, September 2026.
Framework illustrating the comparison of different reference evapotranspiration (ETo) estimation methods and the integration of baseline ETo, crop water requirement (CWR), and irrigation water requirement (IWR) calculations with downscaled CMIP6 climate projections under SSP245 and SSP585 scenarios for the mid‐century and late‐century periods across ...
Umesh Kumar Sujakhu   +3 more
wiley   +1 more source

Calibration of Hargreaves–Samani equation for estimating reference evapotranspiration in semiarid and arid regions

open access: yesArchives of Agronomy and Soil Science, 2013
The Penman–Monteith (FAO-56 PM) equation is suggested as the standard method for estimating evapotranspiration (ET0) by the International Irrigation and Drainage Committee and Food and Agriculture Organization (FAO). On the other hand, the Hargreaves–Samani (HS) equation is an alternative method compared with the FAO-56 PM equation.
Mohammad Mehdi Heydari, Morteza Heydari
openaire   +1 more source

Calibration of the Hargreaves–Samani method for the calculation of reference evapotranspiration in different Köppen climate classes [PDF]

open access: yesHydrology Research, 2015
The Penman–Monteith equation (FAO-56) is accepted as the standard model for estimating reference evapotranspiration (ETo). However, the major obstacle to using FAO-56 widely is that it requires numerous climatic data. The Hargreaves–Samani (HS) method is frequently used for the calculation of ETo since it is based on measurements of daily minimum and ...
Jürgen Grieser, Javier Almorox
openaire   +1 more source

Evapotranspiração de referência para Londrina, Paraná: desempenho de diferentes métodos de estimativa

open access: yesSemina: Ciências Agrárias, 2017
Com objetivo de avaliar o desempenho de métodos alternativos ao Penmam-Monteith-FAO56 para a estimativa da evapotranspiração de referência (ETo) para a cidade de Londrina, Paraná, foram comparados a este método padrão recomendado pela FAO os seguintes ...
Rodrigo Dlugosz da Silva   +4 more
doaj  

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