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Regional Calibration of Hargreaves Equation in the Xiliaohe Basin

机译：西辽河盆地哈格里夫斯方程的区域标定

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This paperinvestigates calibration of Hargreaves equation in Xiliaohe Basin. Twelvemeteorologicalgauges located within Xiliaohe Basin in Northeast China weremonitored during 1970 and 2014 providing continuous records of meteorologicaldata. Taking daily ET0 calculated by Penman-Montieth equation as thebenchmark, the error of Hargreaves equation for computing ET0 wasevaluated and the investigation on regional calibration of Hargreaves equationwas carried out. Results showed there was an obvious difference between thecalculating results of Hargreaves and Penman-Monteith equation. The estimationof the former was obviously higher during June and September while lower duringthe rest time in a year. The three empirical parameters of the Hargreavesequation were calibrated using the SCE-UA (Shuffled Complex Evolution) method,and the calibrated Hargreaves equation showed an obvious promotion in theaccuracy both during the calibration and verification period.
机译：本文对西辽河盆地哈格里夫斯方程的标定进行了研究。 1970年至2014年对位于中国东北西辽河盆地的十二个气象测量仪器进行了监测，提供了连续的气象数据记录。以Penman-Montieth方程计算的日ET0为基准，对Hargreaves方程计算ET0的误差进行了评估，并对Hargreaves方程的区域标定进行了研究。结果表明，Hargreaves和Penman-Monteith方程的计算结果之间存在明显差异。前者的估计值在六月和九月明显较高，而在一年的休息时间则较低。使用SCE-UA（随机复数演化）方法对Hargreaves方程的三个经验参数进行了校准，校准后的Hargreaves方程在校准和验证期间均显示出明显的精度提升。

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