24.6. Estimation Methods

Try these first

1. 1.

   What is the formula for estimating interception loss using empirical methods?

   Hint

   Think about what each letter in the equation stands for.

2. 2.

   What does the interception coefficient depend on?

   Hint

   Consider how different plants interact with precipitation.

3. 3.

   What does the interception loss formula I = P × C represent?

   • Loss of soil moisture
   • Amount of rainfall intercepted
   • Total rainfall

   Hint

   Think about what happens to the rain before reaching the ground.

4. 4.

   True or False: The Gash model focuses mainly on vegetation type.

   • True
   • False

   Hint

   Recall what we said about model definitions.

5. 5.

   If a region experiences 200mm of rainfall, and you measure an interception loss of 50mm, what does this imply about the interception coefficient if you assume only this measurement?

   Hint

   Think about the rearrangement of the formula we learned!

6. 6.

   Calculate the interception loss for a region of 80% dense forest (C=0.30) and 20% grassland (C=0.05) from a total precipitation of 150mm.

   Hint

   Combine the effects of both vegetation types using their respective coefficients.