Analysis of potential evapotranspiration using 11 modified temperature-based models
Analysis of potential evapotranspiration using 11 modified temperature-based models
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DOI：
10.1504/ijhst.2014.067733
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发表时间：
2014
影响因子：
1.8
通讯作者：
M. Valipour;S. Eslamian
中科院分区：
文献类型：
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作者：
M. Valipour;S. Eslamian
采用11个基于温度的模型估算了蒸散量，并与FAO Penman-Monteith模型进行了比较。结果表明，在伊朗大部分省份，修正后的Hargrest-Samani模型对蒸散量的估计优于其他模型。然而，伊朗15个省的R2值小于0.98。因此，对模型进行了校正，提高了估计精度（修正模型中只有5个省的R2值小于1.00（以两位小数计））。基于温度的模型估计蒸散在伊朗东北部和西南部省份优于其他省份。最佳精密度方法为AL（校准前）的改良Hargreen-Samani 1方法和AR的Hargreen-Samani方法、SE和GH的改良Hargreen-Samani 2方法、FA的改良Hargreen-Samani 1方法和MZ的改良Hargreen-Samani 3方法（校准后）。
The evapotranspiration was estimated using 11 temperature-based models and was compared with the FAO Penman-Monteith model. The results showed that the modified Hargreaves-Samani models estimate the evapotranspiration better than the other models in the most provinces of Iran. However, the values of R2 were less than 0.98 for 15 provinces of Iran. Therefore, the models were calibrated and precision of estimation was increased (the values of R2 were less than 1.00 (with respect to two decimal numbers) for only five provinces in the modified models). The temperature-based models estimated the evapotranspiration in the north east and south west provinces of Iran better than other provinces. The best precise methods were the modified Hargreaves-Samani 1 method for AL (before calibration) and the Hargreaves-Samani method for AR, the Modified Hargreaves-Samani 2 method for SE and GH, the modified Hargreaves-Samani 1 for FA, and the modified Hargreaves-Samani 3 for MZ (after calibration).