19.5.2. Energy Balance Methods

Try these first

1. 1.

   What does the Energy Budget Equation represent?

   Hint

   Think about energy balance at the surface.

2. 2.

   What is net radiation?

   Hint

   Consider what happens to sunlight at the surface.

3. 3.

   What do R, G, and H represent in the Energy Budget Equation?

   • Only irrigation factors
   • Temperature effects
   • Net radiation
   • soil heat flux
   • and sensible heat flux

   Hint

   Remember the components of the energy balance.

4. 4.

   The latent heat of vaporization is essential for which process?

   • True
   • False

   Hint

   Think of energy needed for water to transform.

5. 5.

   Explain how variations in R, G, and H might impact ET estimates during a drought period.

   Hint

   Consider how environmental factors interplay.

6. 6.

   Design an irrigation schedule based on ET predictions using the Energy Budget Equation for a crop experiencing high temperatures.

   Hint

   Use R to predict water needs under high temperature.