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What is Class A Pan Coefficient for ETo Estimation about?

This paper evaluates various methods for estimating Class A pan coefficients (Kp) to convert pan evaporation (ECA) into reference evapotranspiration (ETo), which is crucial for irrigation management. The analysis reveals that most Kp estimation methods show low correlation with observed values, with Pereira et al. (1995) and Cuenca (1989) being the most effective. A constant Kp value of 0.71 provides similar accuracy as the more complex methods, although it requires calibration for local conditions.

Author

manojkmarathon123

Language

EN