Evaluation of FAO Penman–Monteith and Alternative Methods for Estimating Reference Evapotranspiration with Missing Data in Eqlid County

سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 511

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شناسه ملی سند علمی:

AGRIHAMAYESH02_100

تاریخ نمایه سازی: 5 آبان 1397

چکیده مقاله:

Evapotranspiration (ET) is an indispensable component of surface energy and waterbalance. Accurate ET estimations play significant roles in the study of global climatechange, environmental evolution, and water resource utilization. The FAO Penman–Monteith equation is the most common method for estimating reference cropevapotranspiration (ET). However, this method needs full weather data, but few stationswith complete weather data exist in Fars province in Iran. In this study reference cropevapotranspiration calculated by Ref-ET software for Eqlid county, Fars province in Iran,by using Eqlid synoptic stations meteorological data during years 2004 to 2016. Theresults of methods evaluated with FAO Penman-Monteith standard method. Theefficiency of all methods was evaluated using Root Mean Square Error (RMSE) andMean Absolute Error (MAE) statistic parameters. The results showed that ASCE st PM,ASCE PM, ASCE PM, ASCE PMrs, 1972 K Pen, FAO 24Pen, FP 17 Pen, 1948Pen,1996 KPen, 1985 Harg, FAO 24Rd, FAO 24BC, 1957 Makk, Prs –Tylr, 1961 Turc andFAO Pan methods, respectively, have less MAE and RMSE. So in situation of less datafor FAO Penman Monteith method in Eqlid, it is possible to use of other methods thatneeds few hydrological parameters.

نویسندگان

Hedieh Ahmadpari

M.Sc. Student of Irrigation and Drainage, University of Tehran

Behnam Rigi Ladez

M.Sc. Student of Irrigation and Drainage, Department of Water Engineering, University of Zabol

Efat Mohamadi

M.Sc. Student of Water Resources Engineering, Department of Water Engineering, University of Zabol