what is total rainfall in cm
Answers
Answer:
at which place it is asking about
Step-by-step explanation:
It is a simple unit. It means, that the rainfall (say over Delhi ) is 50 cm over Delhi. This means, if you spread horizontally the entire water that has fallen over Delhi, it will make 50 cm thick layer of water on the ground. Now since you know the area of Delhi, you can calculate the total volume of water that has fallen over the period of measurement. Normally, drizzle is about <2mm /hr., Light rain is 2-4 mm / hr, moderate is between 5-9 mm / hr, followed by heavy ( Upto 40mm/hr) and violent is more than 50mm / hr
You can measure total rainfall ( roughly) at home by taking a deep cylindrical utensil so that rain drops do not come out of the pot. The top area and the lower area should be roughly the same, this means, it is a cylinder.
Now keep it on your roof top and see how many mm / cm rainfall is there in 24 hours. This reading can be taken by dipping a scale in the water.
Actually, when it rains, on one hand water pours over that area but simultaneously, it runs off, it gets percolated and it is absorbed by the soil. So, the net balance is much lower but over a period of time, since buildings are being added, the area for water to spread or getting absorbed is declining , leading to more hue and cry.