COMPARISON OF FOUR TEMPERATURE BASED REFERENCE CROP EVAPOTRANSPIRATION ESTIMATION METHOD AT URMIA LAKE BASIN

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BABAMIRI O.; DINPASHOH Y.

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Journal: Journal of Irrigation Sciences and Engineering Year:2014 | Volume:37 | Issue:1 Page(s): 43-54

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Title

COMPARISON OF FOUR TEMPERATURE BASED REFERENCE CROP EVAPOTRANSPIRATION ESTIMATION METHOD AT URMIA LAKE BASIN

Author(s)

BABAMIRI O. | DINPASHOH Y. | Issue Writer Certificate

Keywords

EVAPOTRANSPIRATIONQ2

URMIA LAKE BASINQ1

PENMAN- MONTEITHQ2

HARGREAVESQ2

LINACREQ2

BLANEY-CRIDDLEQ2

THORNTHWAITEQ2

Abstract

The aim of this study is to compare and calibrate of four different temperature based ETo estimation methods in monthly time scale at URMIA LAKE BASIN. The selected methods were HARGREAVES (HG), Thornth waite (TW), Blaney- Criddle (BC) and LINACRE (Lin). For this purpose the information of weather parameters in the period 1986-2010 were used. Results of mentioned methods compared with the output of the FAO PENMAN- MONTEITH (PM56). Methods calibrated using the two distinct approaches. At first state only one calibration coefficient estimated along every year. At second state calibration coefficientsestimated for each station and every month in a year. Performance of methods evaluated using the R2, RMSE, MBE and MAE statistics. The effectiveness of method’s calibration evaluated using the RaRMSE.Results showed that before calibration larger biases existed for selected methods comparing PM56.Calibration of methods considerably improved their performances. Results indicated that calibration of methods in the case of second state was very effective comparing the first state. The HG method was recognized as a best method either before or after calibration (in the first state) at the Urmia lake watershed. LINACRE and Blaney- Criddle methods selected as the best methods following the LINACRE method (after calibration at first state). THORNTHWAITE method had large error and therefore was not suitable method for estimation of E To at the study area. The LINACRE method was known as the best method of E To estimation at URMIA LAKE BASIN after calibration (at second state). HG, BC and TW were in the second to fourth rank orders, respectively.

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APA: Copy

BABAMIRI, O., & DINPASHOH, Y.. (2014). COMPARISON OF FOUR TEMPERATURE BASED REFERENCE CROP EVAPOTRANSPIRATION ESTIMATION METHOD AT URMIA LAKE BASIN. IRRIGATION SCIENCES AND ENGINEERING (JISE) (SCIENTIFIC JOURNAL OF AGRICULTURE), 37(1), 43-54. SID. https://sid.ir/paper/217014/en

Vancouver: Copy

BABAMIRI O., DINPASHOH Y.. COMPARISON OF FOUR TEMPERATURE BASED REFERENCE CROP EVAPOTRANSPIRATION ESTIMATION METHOD AT URMIA LAKE BASIN. IRRIGATION SCIENCES AND ENGINEERING (JISE) (SCIENTIFIC JOURNAL OF AGRICULTURE)[Internet]. 2014;37(1):43-54. Available from: https://sid.ir/paper/217014/en

IEEE: Copy

O. BABAMIRI, and Y. DINPASHOH, “COMPARISON OF FOUR TEMPERATURE BASED REFERENCE CROP EVAPOTRANSPIRATION ESTIMATION METHOD AT URMIA LAKE BASIN,” IRRIGATION SCIENCES AND ENGINEERING (JISE) (SCIENTIFIC JOURNAL OF AGRICULTURE), vol. 37, no. 1, pp. 43–54, 2014, [Online]. Available: https://sid.ir/paper/217014/en

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