21.2.2.a. Net Radiation (Rn)

Try these first

1. 1.

   What does Rn stand for?

   Hint

   It's related to radiation balance.

2. 2.

   What does albedo influence?

   Hint

   Think about how light interacts with different surfaces.

3. 3.

   What does net radiation (Rn) measure in the context of evapotranspiration?

   • Only incoming solar radiation
   • The balance of incoming and outgoing radiation
   • Only outgoing longwave radiation

   Hint

   Think about what both components measure together.

4. 4.

   True or False: Albedo is a measure of how much energy is reflected off a surface.

   • True
   • False

   Hint

   Reflectivity is key to understanding energy dynamics.

5. 5.

   A lake has an Rn value of 10 MJ/m2/day during a summer day, while a snow-covered field has an Rn of 3 MJ/m2/day. Discuss the factors leading to this difference.

   Hint

   Think about the properties of water versus snow.

6. 6.

   Calculate the Net Radiation if Rs is 20 MJ/m2/day and α is 0.2, with Rnl at 4 MJ/m2/day.

   Hint

   Apply the formula step-by-step.