10.7. Role of IMD Normals

Try these first

1. 1.

   What is the primary purpose of IMD normals?

   Hint

   Think of the duration used in climatology.

2. 2.

   How long is the rainfall data period for IMD normals?

   Hint

   It's a common duration used in climatology.

3. 3.

   What do IMD normals provide?

   • 30-year rainfall averages
   • Real-time data
   • Monthly summaries

   Hint

   Focus on the specific timeframe mentioned.

4. 4.

   True or False: The Normal Ratio Method uses current rainfall to estimate missing data without considering historical records.

   • True
   • False

   Hint

   Think about how historical trends influence current estimations.

5. 5.

   Given the normals of three nearby stations: Station A (200 mm), Station B (180 mm), Station C (160 mm) and observed rainfall of 190 mm at Station D, estimate the missing rainfall at Station D using the Normal Ratio Method.

   Hint

   Focus on how ratios are derived from the normals.

6. 6.

   Evaluate a scenario where normals of a station have changed significantly over the years. How would you approach estimating missing data under this condition?

   Hint

   Think about how historical consistency impacts current data.