Question

The average pan coefficient for United States Weather Bureau Class A pan is equal to:

• A. 0.95
• B. 1.1
• C. 0.7
• D. 0.2

Hint:

Remember: Class A pan coefficient (Kp) is typically 0.70. Adjustments depend on location, wind, and humidity conditions.

Answer 1

The Correct Option is C

The pan coefficient (\(K_p\)) is used to convert evaporation measured from a pan to the equivalent evaporation over a larger water body. For the United States Weather Bureau Class A pan, the average pan coefficient is approximately 0.70, accounting for the differences in heat storage and energy exchange between the pan and a natural water body.