Results 21 to 30 of about 15,830 (212)

Leaf-scale experiments reveal an important omission in the Penman–Monteith equation [PDF]

open access: yesHydrology and Earth System Sciences, 2016
Abstract. The Penman–Monteith (PM) equation is commonly considered the most advanced physically based approach to computing transpiration rates from plants considering stomatal conductance and atmospheric drivers. It has been widely evaluated at the canopy scale, where aerodynamic and canopy resistance to water vapour are difficult to estimate directly,
Stanislaus J. Schymanski, Dani Or
openaire   +4 more sources

Determination of crop-coefficients and estimation of evapotranspiration of rapeseed using lysimeter and different reference evapotranspiration models

open access: yesJournal of Agrometeorology, 2020
Accurate estimation of evapotranspiration of rapeseed is essentially required for irrigation scheduling and water management. The present study was undertaken during 2015-16 and 2017-18 in ICR Farm, Assam Agricultural University, Jorhat to determine ...
ABHIJIT SARMA, KRISHNA BHARADWAJ
doaj   +1 more source

Desempenho do irrigâmetro na estimativa da evapotranspiração de referência Performance of the "irrigâmetro" in the estimation of reference evapotranspiration

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2008
Neste trabalho objetivou testar o Irrigâmetro para estimar a evapotranspiração de referência comparativamente com o método de Penman-Monteith - FAO 56, e confrontar o seu desempenho com os métodos Penman modificado - FAO 24, Radiação - FAO 24, tanque ...
Rubens A. Oliveira   +4 more
doaj   +1 more source

Avaliação de métodos de estimativa da evapotranspiração horária para alface cultivada em sistema hidropônico em ambiente protegido Evaluation of methods of estimation of hourly evapotranspiration for hydroponic lettuce under protected environment

open access: yesEngenharia Agrícola, 2010
O objetivo deste trabalho foi avaliar a precisão e a exatidão de métodos de estimativa de valores horários de evapotranspiração (ETc) para alface cultivada em sistema hidropônico sob ambiente protegido.
Carlos R. W. Moura   +3 more
doaj   +1 more source

The Calibration of Evaporation Models against the Penman–Monteith Equation on Lake Most [PDF]

open access: yesSustainability, 2020
Evaporation is one of the main components of the water cycle in nature. Our interest in free water surface evaporation is due to the needs of ongoing hydric recultivation of the former Ležáky–Most quarry, i.e., Lake Most, and also other planned hydric recultivations in the region.
Viktor Dubovský   +2 more
openaire   +2 more sources

Comparison and analysis of bare soil evaporation models combined with ASTER data in Heihe River Basin

open access: yesWater Science and Engineering, 2009
Based on ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) remote sensing data, bare soil evaporation was estimated with the Penman-Monteith model, the Priestley-Taylor model, and the aerodynamics model. Evaporation estimated by each
Yan-xia Kang   +3 more
doaj   +1 more source

Evaluation of nine reference evapotranspiration models in Traghen region, Southwest of Libya

open access: yesمجلة المختار للعلوم, 2020
  This research was carried out to evaluate nine reference evapotranspiration, and find out an alternative models to the standard FAO Penman-Monteith model in Traghen region southwest of Libya.
Ali Othman Alghusni
doaj   +1 more source

ESTIMATIVA DA EVAPOTRANSPIRAÇÃO DE REFERÊNCIA E DA DEMANDA SUPLEMENTAR DE IRRIGAÇÃO PARA O MILHO ( Zea mays L.) EM SEROPÉDICA E CAMPOS, ESTADO DO RIO DE JANEIRO

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 1998
RESUMO Realizou-se um estudo com o objetivo de se avaliar a correlação entre diferentes métodos utilizados na estimativa da evapotranspiração de referência (ETo) e seu efeito na demanda de irrigação suplementar para a cultura do milho, nos municípios de ...
Marcos Alexandre Amaral de Oliveira   +1 more
doaj   +1 more source

Reference crop evapotranspiration derived from geo-stationary satellite imagery: a case study for the Fogera flood plain, NW-Ethiopia and the Jordan Valley, Jordan [PDF]

open access: yes, 2010
First results are shown of a project aiming to estimate daily values of reference crop evapotranspiration ET0 from geo-stationary satellite imagery. In particular, for Woreta, a site in the Ethiopian highland at an elevation of about 1800 m, we tested a ...
Bruin, H.A.R., de   +5 more
core   +1 more source

Estimativa da evapotranspiração de referência no município de Capim, PB Estimate of the reference evapotranspiration in the municipality of Capim, PB - Brazil

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2010
Objetivou-se, com este trabalho, estimar a evapotranspiração de referência diária para o município de Capim, PB, através dos métodos de Penman-Monteith, Linacre e Radiação, posteriormente correlacionados com a estação do ano, razão por que se coletaram ...
Ednaldo A. Mendonça, Renilson T. Dantas
doaj   +1 more source

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