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首页> 外文期刊>Mausam: Journal of the Meteorological Department of India >Evaluation of pan coefficient for estimating reference crop evapotranspiration in Solapur station, Maharashtra
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Evaluation of pan coefficient for estimating reference crop evapotranspiration in Solapur station, Maharashtra

机译:在马哈拉施特拉邦索拉普站估算参考作物蒸发蒸腾量的锅系数评估

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摘要

Pan coefficient (Km) is the important factor for computation of reference crop evapotranspiration (ETr) from pan evaporation (E-pan). In this paper, the five approaches proposed by Cuenca, Allen and Pruitt, Snyder, Pereira and Orang were evaluated by using weather parameters for a Solapur station over the years 1983 to 2012. It was observed that, the measured value shows the bi-model variation during the year with values ranging from 0.46 to 0.87. Out of the five methods, Synder method was found to be the best for estimating K-pan with RMSE of 0.38 and MAD of 0.34. By comparing with the Penman-Monteith method, the Snyder approach was best suited.
机译:锅系数(Km)是通过锅蒸发(E-pan)计算参考作物蒸发蒸腾量(ETr)的重要因素。本文利用气象参数对1983年至2012年间索拉普尔站的Cuenca,Allen和Pruitt,Snyder,Pereira和Orang提出的五种方法进行了评估。一年中的变化,范围从0.46到0.87。在这五种方法中,发现Synder方法是估计K-pan的最佳方法,RMSE为0.38,MAD为0.34。通过与Penman-Monteith方法进行比较,Snyder方法是最合适的。

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