Performance of potential evapotranspiration models in Peninsular Malaysia

Potential evapotranspiration (PET) is an important parameter for the operation of irrigation projects and water resources management. The globally recognized PET estimation model, the FAO-56 Penman–Monteith (FAO-56 PM) model, had been criticized for its requirement of many detailed meteorological va...

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Autores principales:	Ee Hang Goh, Jing Lin Ng, Yuk Feng Huang, Stephen Luo Sheng Yong
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	penman–monteith potential evapotranspiration radiation-based model temperature-based model turc model Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/31d92381d16842ea849f151c34fdbf6a
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spelling	oai:doaj.org-article:31d92381d16842ea849f151c34fdbf6a2021-11-09T23:59:42ZPerformance of potential evapotranspiration models in Peninsular Malaysia2040-22442408-935410.2166/wcc.2021.018https://doaj.org/article/31d92381d16842ea849f151c34fdbf6a2021-11-01T00:00:00Zhttp://jwcc.iwaponline.com/content/12/7/3170https://doaj.org/toc/2040-2244https://doaj.org/toc/2408-9354Potential evapotranspiration (PET) is an important parameter for the operation of irrigation projects and water resources management. The globally recognized PET estimation model, the FAO-56 Penman–Monteith (FAO-56 PM) model, had been criticized for its requirement of many detailed meteorological variables, but nevertheless has been accepted as the baseline model in many worldwide studies. The performances of different PET models can be found to be excellent for a specific location but may not be representative in other regions. The aim of this study is to select the most suitable PET model to estimate PET in Malaysia. Three radiation-based models and four temperature-based models were compared with the FAO-56 PM model at seven selected meteorological stations in Peninsular Malaysia. The mean bias error, relative error (Re) and normalized root-mean-square error (NRMSE) and coefficient of determination (R2) were used to evaluate the performances of the PET models. The Re values of Turc models were below 0.2 at all stations, while Priestly–Taylor, Thornthwaite, Thornthwaite-corrected and Blaney–Criddle models were above 0.2. The Makkink and Hargreaves–Samani models were below 0.2 at most of the stations. Thus, the Turc model was recommended as the best model to estimate PET in Peninsular Malaysia. HIGHLIGHTS This study applied various empirical potential evapotranspiration (PET) models to estimate the PET.; Radiation-based models and temperature-based models were compared with the FAO Penman–Monteith model.; MBE, Re, NRMSE and R2 were used to evaluate the performances of PET models.; The Turc model was found to give superior performance.; The outcomes can be used as a reference for water resources-related project design.;Ee Hang GohJing Lin NgYuk Feng HuangStephen Luo Sheng YongIWA Publishingarticlepenman–monteithpotential evapotranspirationradiation-based modeltemperature-based modelturc modelEnvironmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENJournal of Water and Climate Change, Vol 12, Iss 7, Pp 3170-3186 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	penman–monteith potential evapotranspiration radiation-based model temperature-based model turc model Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
spellingShingle	penman–monteith potential evapotranspiration radiation-based model temperature-based model turc model Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Ee Hang Goh Jing Lin Ng Yuk Feng Huang Stephen Luo Sheng Yong Performance of potential evapotranspiration models in Peninsular Malaysia
description	Potential evapotranspiration (PET) is an important parameter for the operation of irrigation projects and water resources management. The globally recognized PET estimation model, the FAO-56 Penman–Monteith (FAO-56 PM) model, had been criticized for its requirement of many detailed meteorological variables, but nevertheless has been accepted as the baseline model in many worldwide studies. The performances of different PET models can be found to be excellent for a specific location but may not be representative in other regions. The aim of this study is to select the most suitable PET model to estimate PET in Malaysia. Three radiation-based models and four temperature-based models were compared with the FAO-56 PM model at seven selected meteorological stations in Peninsular Malaysia. The mean bias error, relative error (Re) and normalized root-mean-square error (NRMSE) and coefficient of determination (R2) were used to evaluate the performances of the PET models. The Re values of Turc models were below 0.2 at all stations, while Priestly–Taylor, Thornthwaite, Thornthwaite-corrected and Blaney–Criddle models were above 0.2. The Makkink and Hargreaves–Samani models were below 0.2 at most of the stations. Thus, the Turc model was recommended as the best model to estimate PET in Peninsular Malaysia. HIGHLIGHTS This study applied various empirical potential evapotranspiration (PET) models to estimate the PET.; Radiation-based models and temperature-based models were compared with the FAO Penman–Monteith model.; MBE, Re, NRMSE and R2 were used to evaluate the performances of PET models.; The Turc model was found to give superior performance.; The outcomes can be used as a reference for water resources-related project design.;
format	article
author	Ee Hang Goh Jing Lin Ng Yuk Feng Huang Stephen Luo Sheng Yong
author_facet	Ee Hang Goh Jing Lin Ng Yuk Feng Huang Stephen Luo Sheng Yong
author_sort	Ee Hang Goh
title	Performance of potential evapotranspiration models in Peninsular Malaysia
title_short	Performance of potential evapotranspiration models in Peninsular Malaysia
title_full	Performance of potential evapotranspiration models in Peninsular Malaysia
title_fullStr	Performance of potential evapotranspiration models in Peninsular Malaysia
title_full_unstemmed	Performance of potential evapotranspiration models in Peninsular Malaysia
title_sort	performance of potential evapotranspiration models in peninsular malaysia
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/31d92381d16842ea849f151c34fdbf6a
work_keys_str_mv	AT eehanggoh performanceofpotentialevapotranspirationmodelsinpeninsularmalaysia AT jinglinng performanceofpotentialevapotranspirationmodelsinpeninsularmalaysia AT yukfenghuang performanceofpotentialevapotranspirationmodelsinpeninsularmalaysia AT stephenluoshengyong performanceofpotentialevapotranspirationmodelsinpeninsularmalaysia
_version_	1718440731920564224

Performance of potential evapotranspiration models in Peninsular Malaysia

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