21.2.2.b. Aerodynamic Term

Try these first

1. 1.

   What does the aerodynamic term account for in the Penman equation?

   Hint

   Consider factors that influence evaporation.

2. 2.

   Define saturation vapor pressure.

   Hint

   Think about the air's capacity to hold moisture.

3. 3.

   What does the aerodynamic term measure in the evapotranspiration process?

   • Saturation vapor pressure
   • Actual vapor pressure
   • Wind speed influence

   Hint

   Think about factors that speed up moisture removal.

4. 4.

   True or False: The aerodynamic term does not depend on wind speed.

   • True
   • False

   Hint

   Consider what happens in a windy versus a calm environment.

5. 5.

   Given the following data: $e_s = 4.0$ kPa, $e_a = 1.0$ kPa, and $u_2 = 5$ m/s, calculate the aerodynamic term. Discuss the implications of this result on irrigation practices.

   Hint

   Consider each step of the calculation carefully and reflect on the results.

6. 6.

   Explain how varying conditions, such as a change in wind speed or humidity, might alter the irrigation strategy based on the aerodynamic term.

   Hint

   Analyze how each factor influences plant water uptake.