The best alternative for estimating reference crop evapotranspiration in different sub-regions of mainland China

Abstract Reference crop evapotranspiration (ET o) is a critically important parameter for climatological, hydrological and agricultural management. The FAO56 Penman-Monteith (PM) equation has been recommended as the standardized ET o (ET o,s) equation, but it has a high requirements of climatic data...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Lingling Peng, Yi Li, Hao Feng
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/12cd0566c22e4afdb7ab0e3b3fc8974a
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:12cd0566c22e4afdb7ab0e3b3fc8974a
record_format	dspace
spelling	oai:doaj.org-article:12cd0566c22e4afdb7ab0e3b3fc8974a2021-12-02T11:52:39ZThe best alternative for estimating reference crop evapotranspiration in different sub-regions of mainland China10.1038/s41598-017-05660-y2045-2322https://doaj.org/article/12cd0566c22e4afdb7ab0e3b3fc8974a2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05660-yhttps://doaj.org/toc/2045-2322Abstract Reference crop evapotranspiration (ET o) is a critically important parameter for climatological, hydrological and agricultural management. The FAO56 Penman-Monteith (PM) equation has been recommended as the standardized ET o (ET o,s) equation, but it has a high requirements of climatic data. There is a practical need for finding a best alternative method to estimate ET o in the regions where full climatic data are lacking. A comprehensive comparison for the spatiotemporal variations, relative errors, standard deviations and Nash-Sutcliffe efficacy coefficients of monthly or annual ET o,s and ET o,i (i = 1, 2, …, 10) values estimated by 10 selected methods (i.e., Irmak et al., Makkink, Priestley-Taylor, Hargreaves-Samani, Droogers-Allen, Berti et al., Doorenbos-Pruitt, Wright and Valiantzas, respectively) using data at 552 sites over 1961–2013 in mainland China. The method proposed by Berti et al. (2014) was selected as the best alternative of FAO56-PM because it was simple in computation process, only utilized temperature data, had generally good accuracy in describing spatiotemporal characteristics of ET o,s in different sub-regions and mainland China, and correlated linearly to the FAO56-PM method very well. The parameters of the linear correlations between ET o of the two methods are calibrated for each site with the smallest determination of coefficient being 0.87.Lingling PengYi LiHao FengNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-19 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lingling Peng Yi Li Hao Feng The best alternative for estimating reference crop evapotranspiration in different sub-regions of mainland China
description	Abstract Reference crop evapotranspiration (ET o) is a critically important parameter for climatological, hydrological and agricultural management. The FAO56 Penman-Monteith (PM) equation has been recommended as the standardized ET o (ET o,s) equation, but it has a high requirements of climatic data. There is a practical need for finding a best alternative method to estimate ET o in the regions where full climatic data are lacking. A comprehensive comparison for the spatiotemporal variations, relative errors, standard deviations and Nash-Sutcliffe efficacy coefficients of monthly or annual ET o,s and ET o,i (i = 1, 2, …, 10) values estimated by 10 selected methods (i.e., Irmak et al., Makkink, Priestley-Taylor, Hargreaves-Samani, Droogers-Allen, Berti et al., Doorenbos-Pruitt, Wright and Valiantzas, respectively) using data at 552 sites over 1961–2013 in mainland China. The method proposed by Berti et al. (2014) was selected as the best alternative of FAO56-PM because it was simple in computation process, only utilized temperature data, had generally good accuracy in describing spatiotemporal characteristics of ET o,s in different sub-regions and mainland China, and correlated linearly to the FAO56-PM method very well. The parameters of the linear correlations between ET o of the two methods are calibrated for each site with the smallest determination of coefficient being 0.87.
format	article
author	Lingling Peng Yi Li Hao Feng
author_facet	Lingling Peng Yi Li Hao Feng
author_sort	Lingling Peng
title	The best alternative for estimating reference crop evapotranspiration in different sub-regions of mainland China
title_short	The best alternative for estimating reference crop evapotranspiration in different sub-regions of mainland China
title_full	The best alternative for estimating reference crop evapotranspiration in different sub-regions of mainland China
title_fullStr	The best alternative for estimating reference crop evapotranspiration in different sub-regions of mainland China
title_full_unstemmed	The best alternative for estimating reference crop evapotranspiration in different sub-regions of mainland China
title_sort	best alternative for estimating reference crop evapotranspiration in different sub-regions of mainland china
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/12cd0566c22e4afdb7ab0e3b3fc8974a
work_keys_str_mv	AT linglingpeng thebestalternativeforestimatingreferencecropevapotranspirationindifferentsubregionsofmainlandchina AT yili thebestalternativeforestimatingreferencecropevapotranspirationindifferentsubregionsofmainlandchina AT haofeng thebestalternativeforestimatingreferencecropevapotranspirationindifferentsubregionsofmainlandchina AT linglingpeng bestalternativeforestimatingreferencecropevapotranspirationindifferentsubregionsofmainlandchina AT yili bestalternativeforestimatingreferencecropevapotranspirationindifferentsubregionsofmainlandchina AT haofeng bestalternativeforestimatingreferencecropevapotranspirationindifferentsubregionsofmainlandchina
_version_	1718394966959456256

The best alternative for estimating reference crop evapotranspiration in different sub-regions of mainland China

Ejemplares similares