7.5. Interpolation and Estimation of Missing Rainfall Data

Try these first

1. 1.

   What does the Arithmetic Mean Method entail?

   Hint

   Think about how you calculate an average.

2. 2.

   When do we use the Normal Ratio Method?

   Hint

   Consider the percentage difference.

3. 3.

   What does the Arithmetic Mean Method primarily use to estimate missing rainfall data?

   • Surrounding station values
   • Weather patterns
   • Historical data

   Hint

   Think about how averages work.

4. 4.

   Does the Normal Ratio Method rely on the uniformity of rainfall?

   • True
   • False

   Hint

   Consider what 'normal' means.

5. 5.

   A station recorded 120 mm while two nearby stations recorded 100 mm and 130 mm. Calculate the missing rainfall using the Arithmetic Mean Method.

   Hint

   Add the values and divide by the total number of stations.

6. 6.

   You have stations A, B, C reporting 50 mm, 100 mm, and 150 mm respectively. How would you estimate the missing data using the Inverse Distance Method assuming A is 1 km away, B is 3 km away, and C is 5 km away?

   Hint

   Ensure to calculate contributions based on inverse distance.