15.7.1.1. Compilation of daily/monthly/annual series

Try these first

1. 1.

   What is the purpose of compiling rainfall data?

   Hint

   Think about how rain affects agriculture and water supply.

2. 2.

   Name one method used to compile rainfall data.

   Hint

   It's a simple method involving averages.

3. 3.

   What is the Arithmetic Mean Method used for?

   • To average rainfall data
   • To create polygons
   • To visualize rainfall

   Hint

   Which method deals with averaging numbers directly?

4. 4.

   True or False: The Isohyetal Method provides a visual representation of rainfall.

   • True
   • False

   Hint

   Consider whether visual representation is involved in the Isohyetal Method.

5. 5.

   Given three rain gauges measuring 50 mm, 70 mm, and 90 mm, calculate the areal rainfall using the Arithmetic Mean Method and discuss its limitations.

   Hint

   Calculate the average rainfall from the gauges and think about what is not captured.

6. 6.

   Using the Thiessen Polygon Method, describe how you would set up regions for five gauges located at coordinates reflecting their spatial distribution.

   Hint

   Visualize the locations of gauges and how far their influence extends.