干旱区生态环境知识资源中心(Arid): Assessing suitability of temperature-based reference evapotranspiration methods for semi-arid basin of Maharashtra

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	Assessing suitability of temperature-based reference evapotranspiration methods for semi-arid basin of Maharashtra
	Wable, P. S.; Jha, M. K.; Gorantiwar, S. D.
通讯作者	Wable, PS (corresponding author), Int Crops Res Inst Semi Arid Trop, Hyderabad, India.
来源期刊	JOURNAL OF AGROMETEOROLOGY
ISSN	0972-1665
出版年	2019
卷号	21 期号:3 页码:351-356
英文摘要	FAO Penman-Monteith (FAO-PM) is deemed as a sole standard method for estimating reference evapotranspiration (ETo). However, limited availability of meteorological data at spatial and temporal scales restricts the application of this method. To address this issue, the FAO 56 experts suggested three methods when only maximum and minimum temperature data are available: (i) Temperature-based Penman-Monteith (PMT-1) method wherein T-dew approximate to T-min (ii) PMT-2 wherein T-dew approximate to T-min-2.5, and (iii) Hargreaves method. These ETo methods were assessed for a semi-arid basin of Western India which lacks adequate climatic data. The performances of the ETo methods were evaluated against the standard FAO-PM method using salient statistical and graphical indicators, together with the sensitivity analysis. The results of the three temperature-based methods had a tendency of over-predication of ETo in the study area. The PMT-1 method, however, provided superior ETo estimates compared to PMT-2 and Hargreaves methods. For estimating monthly ETo, the FAO-PM method was most sensitive to temperature. Further, ETo of the monsoon season over the study area increased from 5 to 12% during 'drought' years compared to 'normal' years. It was concluded that PMT-1 method is the most suitable temperature-based method for estimating ETo in semi-arid regions under limited climatic condition.
英文关键词	FAO Penman-Monteith method temperature-based Penman-Monteith method Hargreaves method ET mapping limited data semi-arid region
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000595339900014
WOS关键词	EQUATIONS ; RANGE
WOS类目	Agronomy ; Meteorology & Atmospheric Sciences
WOS研究方向	Agriculture ; Meteorology & Atmospheric Sciences
来源机构	International Crops Research Institute for the Semi-Arid Tropics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369513
作者单位	[Wable, P. S.] Int Crops Res Inst Semi Arid Trop, Hyderabad, India; [Jha, M. K.] Indian Inst Thchnol Kharagpur, Agr & Food Engn Dept, Kharagpur, W Bengal, India; [Gorantiwar, S. D.] Mahatma Phule Krishi Vidyapeeth, Dr AS Coll Agr Engn, Rahuri, India
推荐引用方式 GB/T 7714	Wable, P. S.,Jha, M. K.,Gorantiwar, S. D.. Assessing suitability of temperature-based reference evapotranspiration methods for semi-arid basin of Maharashtra[J]. International Crops Research Institute for the Semi-Arid Tropics,2019,21(3):351-356.
APA	Wable, P. S.,Jha, M. K.,&Gorantiwar, S. D..(2019).Assessing suitability of temperature-based reference evapotranspiration methods for semi-arid basin of Maharashtra.JOURNAL OF AGROMETEOROLOGY,21(3),351-356.
MLA	Wable, P. S.,et al."Assessing suitability of temperature-based reference evapotranspiration methods for semi-arid basin of Maharashtra".JOURNAL OF AGROMETEOROLOGY 21.3(2019):351-356.