Comparative study of fifty potential evapotranspiration models for urban area in tropical region

Evaluation of potential evapotranspiration (PET) models against Penman Monteith FAO-56 has become more popular in developing countries. However, it requires complete weather variables data. To overcome this problem, we evaluated a number of PET models which were classified into fourteen-Temperature...

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Main Author:	Faruk Lawan, Umar
Format:	Thesis
Language:	English
Published:	2015
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/53980/1/UmarFarukLawanMFKA2015.pdf
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spelling	my-utm-ep.539802020-10-11T08:23:39Z Comparative study of fifty potential evapotranspiration models for urban area in tropical region 2015-08 Faruk Lawan, Umar TA Engineering (General). Civil engineering (General) Evaluation of potential evapotranspiration (PET) models against Penman Monteith FAO-56 has become more popular in developing countries. However, it requires complete weather variables data. To overcome this problem, we evaluated a number of PET models which were classified into fourteen-Temperature based models; twelve-Mass transfer based models; twenty one-Radiation based models and three-Combination based models against 20 years-observed pan evaporation data from Subang Jaya meteorological station. Julian day based mean imputation was used to fill the missing data. Tukey's outlier detection method was employed before estimating the PET. The performance of the models were evaluated with percentage of error (% error) in total values, % error in maximum values, % error in minimum values, % error in average values, root mean squared error (RMSE), and the paired t-test of the prediction accuracy. The results showed that Linacre, Meyer, Conchrane-Orcutt, and Kimberly Penman performed better than the other PET models among their categories. The present study also indicated that Kimberly Penman (combination based model) is decided as the best PET model. However, with considering the small difference of RMSE values and number of required weather variables, Conchrane-Orcutt (radiation based model) is recommended for future research and practical hydrological application. 2015-08 Thesis http://eprints.utm.my/id/eprint/53980/ http://eprints.utm.my/id/eprint/53980/1/UmarFarukLawanMFKA2015.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:85822 masters Universiti Teknologi Malaysia, Faculty of Civil Engineering Faculty of Civil Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Faruk Lawan, Umar Comparative study of fifty potential evapotranspiration models for urban area in tropical region
description	Evaluation of potential evapotranspiration (PET) models against Penman Monteith FAO-56 has become more popular in developing countries. However, it requires complete weather variables data. To overcome this problem, we evaluated a number of PET models which were classified into fourteen-Temperature based models; twelve-Mass transfer based models; twenty one-Radiation based models and three-Combination based models against 20 years-observed pan evaporation data from Subang Jaya meteorological station. Julian day based mean imputation was used to fill the missing data. Tukey's outlier detection method was employed before estimating the PET. The performance of the models were evaluated with percentage of error (% error) in total values, % error in maximum values, % error in minimum values, % error in average values, root mean squared error (RMSE), and the paired t-test of the prediction accuracy. The results showed that Linacre, Meyer, Conchrane-Orcutt, and Kimberly Penman performed better than the other PET models among their categories. The present study also indicated that Kimberly Penman (combination based model) is decided as the best PET model. However, with considering the small difference of RMSE values and number of required weather variables, Conchrane-Orcutt (radiation based model) is recommended for future research and practical hydrological application.
format	Thesis
qualification_level	Master's degree
author	Faruk Lawan, Umar
author_facet	Faruk Lawan, Umar
author_sort	Faruk Lawan, Umar
title	Comparative study of fifty potential evapotranspiration models for urban area in tropical region
title_short	Comparative study of fifty potential evapotranspiration models for urban area in tropical region
title_full	Comparative study of fifty potential evapotranspiration models for urban area in tropical region
title_fullStr	Comparative study of fifty potential evapotranspiration models for urban area in tropical region
title_full_unstemmed	Comparative study of fifty potential evapotranspiration models for urban area in tropical region
title_sort	comparative study of fifty potential evapotranspiration models for urban area in tropical region
granting_institution	Universiti Teknologi Malaysia, Faculty of Civil Engineering
granting_department	Faculty of Civil Engineering
publishDate	2015
url	http://eprints.utm.my/id/eprint/53980/1/UmarFarukLawanMFKA2015.pdf
_version_	1747817666475720704

Comparative study of fifty potential evapotranspiration models for urban area in tropical region

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