Comparative analysis of 12 reference evapotranspiration methods for semi-arid regions (Spain)

IF 2.7 4区环境科学与生态学 Q2 WATER RESOURCES

Journal of Water and Climate Change Pub Date : 2023-08-17 DOI:10.2166/wcc.2023.448

Joel Hernández-Bedolla, A. Solera, S. T. Sánchez-Quispe, Constantino Domínguez-Sánchez

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Abstract

Evapotranspiration is one of the most significant variables used to determine runoff, hydrological balances, and climate change studies. In semi-arid conditions, there is a need to evaluate various alternatives to establish reference evapotranspiration (ETo), given that climate change scenarios sometimes do not provide information on diverse climate variables. Several alternatives for obtaining evapotranspiration are analyzed in this study and compared with the Penman-Monteith method, modified by FAO (PMFAO56). Due to limited daily climate information, it is necessary to consider different options for determining reference evapotranspiration. In the present work, methods based on temperature (Hargreaves, Hargreaves 1, Hargreaves 2, and Baier-Robertson) and radiation (Caprio, Irmark 1, Irmark 2, Irmark 3, Makkink, Priestley-Taylor and Hasen) were investigated. The best performance for the semi-arid Jucar River Basin was determined by Hargreaves methods. Regional calibration of Hargreaves methods, Hargreaves 1 and Hargreaves 2, were performed for each sub-basin.

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半干旱区12种蒸散发参考方法的比较分析(西班牙)

蒸散发是决定径流、水文平衡和气候变化研究的最重要变量之一。在半干旱条件下，考虑到气候变化情景有时不能提供各种气候变量的信息，有必要评估各种备选方案以确定参考蒸散量(ETo)。本研究分析了几种获取蒸散发的替代方法，并与经FAO (PMFAO56)修订的Penman-Monteith方法进行了比较。由于每日气候信息有限，有必要考虑确定参考蒸散发的不同选择。本文研究了基于温度(Hargreaves, Hargreaves 1, Hargreaves 2, and Baier-Robertson)和辐射(Caprio, Irmark 1, Irmark 2, Irmark 3, Makkink, Priestley-Taylor和Hasen)的方法。在半干旱的朱卡河流域，采用哈格里夫斯方法确定了最佳效果。对每个子流域进行了Hargreaves方法(Hargreaves 1和Hargreaves 2)的区域校准。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Water and Climate Change WATER RESOURCES-

CiteScore

4.80

自引率

10.70%

发文量

168

审稿时长

>12 weeks

期刊介绍： Journal of Water and Climate Change publishes refereed research and practitioner papers on all aspects of water science, technology, management and innovation in response to climate change, with emphasis on reduction of energy usage.