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DOI	10.1016/j.ejrh.2014.11.007
	Estimating evaporation in semi-arid areas facing data scarcity: Example of the El Haouareb dam (Merguellil catchment, Central Tunisia)
	Alazard, M.; Leduc, C.; Travi, Y.; Boulet, G.; Ben Salem, A.
通讯作者	Alazard, M
来源期刊	JOURNAL OF HYDROLOGY-REGIONAL STUDIES
EISSN	2214-5818
出版年	2015
卷号	3 页码:265-284
英文摘要	Study region: The El Haouareb dam (Merguellil catchment) in central Tunisia, which is typical of semi-arid environments. Study focus: Most estimates of evaporation from water bodies located in semi-arid environments suffer from the lack of data, or biased field measurements. It is thus important for hydrologists to assess the relative performance of the various available methods used to estimate this water loss, as well as their uncertainties. We confronted physical approaches based on contrasted theoretical formulae (Dalton, simplified BREB, Penman) and geochemical approaches based on mass conservation (stable isotopes and chloride). We compared the results with Colorado pan measurements, and tested the methods' sensitivity to various physical parameters and data gaps. New hydrological insights for the region: In this region, where mean annual rainfall is 300 mm, estimates of evaporation of the El Haouareb Dam lake ranged from 1400 to 1900 mm a(-1), depending on the method and the year. The Penman approach was found to be the most robust and gave an annual mean of 1600 mm a(-1). Evaporation values were refined by combining results from the different methods. Mean interannual evaporation was estimated to be 1700 mm a(-1), with an uncertainty of 15%. From this work, we propose an annual Colorado pan conversion coefficient of 0.8 which can be adjusted, 1.0 for spring and 0.76 for the rest of the year. (C) 2014 The Authors. Published by Elsevier B.V.
英文关键词	Semi-arid areas Evaporation Water budget
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000436600400013
WOS关键词	WATER-SURFACE EVAPORATION ; ISOTOPIC CHARACTERIZATION ; STABLE-ISOTOPES ; ENERGY BUDGET ; LAKE ; IRRIGATION ; RESERVOIR ; COEFFICIENTS ; SENSITIVITY ; SYSTEM
WOS类目	Water Resources
WOS研究方向	Water Resources
来源机构	French National Research Institute for Sustainable Development
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/331411
作者单位	[Alazard, M.; Leduc, C.] IRD, UMR G EAU, Montpellier, France; [Alazard, M.] Univ Montpellier 2, Montpellier, France; [Travi, Y.] Univ Avignon UAPV, UMR EMMAH, Avignon, France; [Boulet, G.] IRD, UMR CESBIO, Toulouse, France; [Ben Salem, A.] Minist Agr & Hydraul Resources, Tunis, Tunisia
推荐引用方式 GB/T 7714	Alazard, M.,Leduc, C.,Travi, Y.,et al. Estimating evaporation in semi-arid areas facing data scarcity: Example of the El Haouareb dam (Merguellil catchment, Central Tunisia)[J]. French National Research Institute for Sustainable Development,2015,3:265-284.
APA	Alazard, M.,Leduc, C.,Travi, Y.,Boulet, G.,&Ben Salem, A..(2015).Estimating evaporation in semi-arid areas facing data scarcity: Example of the El Haouareb dam (Merguellil catchment, Central Tunisia).JOURNAL OF HYDROLOGY-REGIONAL STUDIES,3,265-284.
MLA	Alazard, M.,et al."Estimating evaporation in semi-arid areas facing data scarcity: Example of the El Haouareb dam (Merguellil catchment, Central Tunisia)".JOURNAL OF HYDROLOGY-REGIONAL STUDIES 3(2015):265-284.