Why is rainfall measured in mm and not milliliters?

Answer 1

Because they measure how deep the rainfall is, they are not measuring the volume of the rain. The depth is measured because it is not important to know the total amount of rainfall that falls, because an area of indeterminant size is not so much affected by the total amount of water that falls, but the amount of water that falls on an area of given size, which is best represented by the depth of the moisture.

Answer 2

Rainfall is typically measured in millimeters because it represents the depth of water covering a specific area. Milliliters are used to measure volume, which could vary depending on factors like the shape of the container used for measurement. Using mm as a standard unit helps ensure consistency in how rainfall data is collected and compared across different locations.

Answer 3

On each square metre of ground a certain number of litres fall. If 1 liter falls, that's 1000 cm3 per 100x100cm2, that is 0.1cm3 per cm2. That is, on each square cm the water stands 1mm deep. It is easier to say "1 millimeter of rain, than "1 liter per square meter". In any dish with vertical sides, that amount of rain would give you 1 millimeter depth. And depth of water worries people the most.

Answer 4

because it fell downward and extreme can be known in inces upto the souce or its origin.

Answer 5

because that is the unit we use