Performance of Recalibrated Equations for the Estimation of Daily Reference Evapotranspiration

P. Mallikarjuna (), S. Jyothy (), D. Murthy () and K. Reddy ()

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2014, vol. 28, issue 13, 4513-4535

Abstract: An accurate estimation of reference evapotranspiration (ET 0 ) is of paramount importance for many studies such as hydrologic water balance, irrigation system design and management, crop yield simulation, and water resources planning and management. In the present study, Blaney-Criddle, Jensen-Haise and Hargreaves (temperature based), Priestley-Taylor, Radiation and Makkink (radiation based) and, Pan Evaporation and Christiansen (pan evaporation based) methods have been evaluated and recalibrated with respect to FAO-56 Penman-Monteith method for estimating daily ET 0 in the semi-arid Tirupati, Nellore, Rajahmundry, Anakapalli and Rajendranagar sites of Andhra Pradesh, India. Recalibrated Blaney-Criddle (temperature based), Radiation (Radiation based) and Christiansen (Pan evaporation based) methods showed a satisfactory performance at the sites. Further, recalibrated Blaney- Criddle method showed relatively better performance than Radiation and Christiansen methods in the daily ET 0 estimation. Recalibrated Blaney- Criddle method may therefore be adopted at the sites selected for the present study and also at the sites with similar climatic conditions for satisfactory daily ET 0 estimation. Copyright Springer Science+Business Media Dordrecht 2014

Keywords: Reference evapotranspiration; Recalibrated equations; Performance evaluation (search for similar items in EconPapers)
Date: 2014
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DOI: 10.1007/s11269-014-0733-9

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