Evaluation of Class A Pan Coefficient Models For Estimation of Reference Evapotranspiration Using Penman-Monteith Method

Author(s):

CH. SreeMaheswari , R.G.M.C.E.T.,Nandyal,India.; S. Aruna Jyothy, SVUCE, Tirupati

Keywords:

Reference Evapotranspiration, Class A pan, Pan Evaporation, Pan Coefficient, Pan Coefficient models

Abstract:

Evapotranspiration and evaporation measurements are important parameters for many agricultural activities such as water resource management and design of irrigation systems etc. From Food and Agriculture Organization, FAO-56 Irrigation and Drainage paper FAO Penman - Monteith method (FAO PMM) was selected as the sole standard method for the estimation of reference evapotranspiration (ETO). The objective of this paper was to evaluate seven pan models for prediction of KPan values and their comparison against the FAO PMM approach for Anakapalli station of Andhra Pradesh. Monthly mean reference evapotranspiration (ETO) was calculated according to the pan-ETO model and then compared with ETO calculated using FAO PMM. Performance evaluation of the KPan models in ETO estimation has been done using statistical parameters. The results from the analysis showed that for estimation of ETO, the most appropriate pan coefficient is calculated using the Snyder model for the study area, which give almost nearer estimates.

Other Details:

Manuscript Id	:	IJSTEV3I7037
Published in	:	Volume : 3, Issue : 7
Publication Date	:	01/02/2017
Page(s)	:	90-93

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