Results 31 to 40 of about 35,573 (203)

Comparison of M5 Model Tree and Artificial Neural Network for Estimating Potential Evapotranspiration in Semi-arid Climates [PDF]

open access: yesDesert, 2014
Evaporation is a fundamental parameter in the hydrological cycle. This study examines the performance of M5model tree and artificial neural network (ANN) models in estimating potential evapotranspiration calculated byPenman- Monteith and Hargreaves ...
Nozar Ghahreman, Mahsa Sameti
doaj   +1 more source

Estimation of Reference Evapotranspiration during the Irrigation Season Using Nine Temperature-Based Methods in a Hot-Summer Mediterranean Climate

open access: yesAgriculture, 2021
The FAO-56 Penman–Monteith (PM) equation is regarded as the most accurate equation to estimate reference evapotranspiration (ETo). However, it requires a broad range of data that may not be available or of reasonable quality.
Gonçalo C. Rodrigues, Ricardo P. Braga
doaj   +1 more source

Evapotranspiração de referência estimada pelos métodos Penman–Monteith-FAO (56) e Hargreaves & Samani para o município de Dourados, MS [PDF]

open access: yes, 2014
O atendimento das necessidades hídricas é um dos principais parâmetros para o aumento da produtividade das culturas. Entretanto, a utilização de métodos para a estimativa da evapotranspiração de referência, como fator de entrada para estimativa da ...
Noia, Carlos Phelippe Zocolaro   +3 more
core   +2 more sources

Comparison of evapotranspiration results under climate change RCP scenarios [PDF]

open access: yesEnvironmental Resources Research, 2021
Evapotranspiration after rainfall is the main component of the hydrological cycle that quantifies the amount of water lost. Since climate change directly affects the temperature and rainfall parameters, and the evapotranspiration rate is directly related
M.R. Goodarzi, K. Janati, A. Fatehifar
doaj   +1 more source

Métodos de estimativa da evapotranspiração de referência diária para a microrregião de Garanhuns, PE Daily reference evapotranspiration estimating methods for the Garanhuns, PE micro-region

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2012
Para o manejo da irrigação com alta frequência e com base em dados climáticos, é desejável que a estimava da evapotranspiração de referência seja feita para pequenos intervalos de tempo.
João C. F. Borges Júnior   +4 more
doaj   +1 more source

Application of different calibration methods for the Hargreaves-Samani model in Southeast Brazil

open access: yesResearch, Society and Development, 2020
The evapotranspiration is an important variable in the hydrological cycle and one of the main components of water balance in the soil. The use of simplified equations is a potential alternative to estimate reference evapotranspiration (ET0) when there is limited meteorological data.
Rafael Esteves Dohler   +4 more
openaire   +2 more sources

Irrigation scheduling techniques and irrigation frequency on capsicum growth and yield

open access: yesDyna, 2019
The present study aimed to evaluate different irrigation scheduling strategies on capsicum growth and yield inprotected environment. The experiment was carried out at the Northeastern of Brazil. Five irrigation scheduling techniques to define water depth
Leandro Candido Gordin   +5 more
doaj   +1 more source

Models to estimate incident solar radiation on Seropédica, Rio de Janeiro

open access: yesBioscience Journal, 2016
Incident solar radiation (Rs) is usually used as an input variable in growth simulation models and yield of agricultural crops, in the design of alternative energy systems, buildings desing, weather, irrigation projects and food preservation, among ...
Givanildo de Gois   +5 more
doaj   +3 more sources

Az evapotranszspiráció meghatározása Hargreaves-Samani módszerrel magyarországi adatokon [PDF]

open access: yes, 2019
A referencia evapotranszspiráció meghatározására elfogadott standard formula a FAO Penman-Monteith egyenlet. Ennek a formulának az a hátránya, hogy adatigényes. Számos meteorológiai megfigyelőhelyen nincsen sugárzás és szélmérés.
Szalka, Éva   +2 more
core   +1 more source

Evaluation and Calibration of Alternative Methods for Estimating Reference Evapotranspiration in the Senegal River Basin

open access: yesHydrology, 2020
Reference evapotranspiration (ET0) is a key element of the water cycle in tropical areas for the planning and management of water resources, hydrological modeling, and irrigation management.
Papa Malick Ndiaye   +5 more
doaj   +1 more source

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