21.2 - Penman Method
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Practice Questions
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What does ET stand for?
💡 Hint: It combines two processes.
Name one advantage of the Penman Method.
💡 Hint: Think about its basis in physical principles.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does the Penman Method estimate?
💡 Hint: Think about the water availability scenario.
The albedo value of a surface affects what?
💡 Hint: Consider the reflectivity of surfaces.
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Challenge Problems
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Given the following data: Incoming solar radiation (Rs) = 20 MJ/m²/day, Albedo (α) = 0.2, Outgoing longwave radiation (Rnl) = 6 MJ/m²/day. Calculate the net radiation (Rn).
💡 Hint: Use the formula discussed and plug in the values correctly.
If a region has an average temperature of 25°C and a wind speed of 3 m/s, discuss how these factors would influence the accuracy of the Penman Method in that region.
💡 Hint: Consider all factors from the equation and how they interrelate.
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