Evaluation of pan coefficient for reference crop evapotranspiration for semi-arid region |
| |
| Authors: | H. G. Gundekar U. M. Khodke S. Sarkar R. K. Rai |
| |
| Affiliation: | (1) Department of Hydrology, Indian Institute of Technology Roorkee, Roorkee, 247 667, Uttarakhand, India;(2) Department of Irrigation and Drainage Engineering, Marathwada Agricultural University, Parbhani, Maharashtra, India;(3) Department of Irrigation, State Water Resources Agency, Ground-floor WALMI Bhawan, Utrethia, 226 026 Lucknow, Uttar Pradesh, India |
| |
| Abstract: | Pan coefficient (K pan) is the important factor for computation of reference evapotranspiration (ET o ) from pan evaporation (E pan). 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 Unpublished Report, Calif.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. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
