Evaluation of pan coefficient for reference crop evapotranspiration for semi-arid region

被引：0

作者：

H. G. Gundekar

U. M. Khodke

S. Sarkar

R. K. Rai

机构：

[1] Indian Institute of Technology Roorkee,Department of Hydrology

[2] Marathwada Agricultural University,Department of Irrigation and Drainage Engineering

[3] State Water Resources Agency,Department of Irrigation

来源：

Irrigation Science | 2008年 / 26卷

关键词：

Wind Speed; Root Mean Square Error; Mean Absolute Deviation; Reference Crop Evapotranspiration; ASCE Task Committee;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Pan coefficient (Kpan) is the important factor for computation of reference evapotranspiration (ETo) from pan evaporation (Epan). In this paper, the approaches proposed by Cuenca (Irrigation system design: an engineering approach. Prentice-Hall, Englewood Cliffs, 1989), Snyder (J Irrig Drain Eng 118(6):977–980, 1992), Orang (Potential accuracy of the popular non-linear regression equations for estimating pan coefficient values in the original and FAO-24 tables. Unpublished Report, Calif. Dept. of Water Resources, Sacramento, 1998), Raghuwanshi and Wallender (J Irrig Drain Eng 118 (6):977–980, 1998) and Pereira et al. (Agric Water Manage 76:75–82, 1995) were evaluated for a semi-arid region. By comparing with the FAO 56 Penman-Monteith (F-PM) method the Snyder (J Irrig Drain Eng 118(6):977–980, 1992, 1992) approach was best suited for the semi-arid region.

引用

页码：169 / 175

页数：6

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