6.2. Indirect/Analytical Methods

Try these first

1. 1.

   What is evaporation?

   Hint

   Think about the water cycle.

2. 2.

   Name one type of evaporimeter.

   Hint

   Consider the common measurement tools for water loss.

3. 3.

   What does the Penman-Monteith Equation estimate?

   • Precipitation
   • Evapotranspiration
   • Runoff

   Hint

   Consider which process combines evaporation and transpiration.

4. 4.

   True or False: Actual Evapotranspiration is always greater than Potential Evapotranspiration.

   • True
   • False

   Hint

   Consider how real-world conditions influence ET rates.

5. 5.

   Calculate the potential evapotranspiration for a small agricultural plot using the Penman-Monteith equation, given the following data: Net radiation = 200 W/m², soil heat flux = 10 W/m², temperature = 30°C, wind speed = 2 m/s, vapor pressure deficit = 2 kPa.

   Hint

   Revisit the components of the Penman-Monteith equation.

6. 6.

   Discuss the impact of increased wind speed on evaporation rates in reservoirs and suggest practical solutions to minimize losses.

   Hint

   Think about ways to physically obstruct air movement over water surfaces.