The standard instrument for the measurement of rainfall is the 203mm (8 inch) rain gauge. This is essentially a circular funnel with a diameter of 203mm which collects the rain into a graduated and calibrated cylinder. The measuring cylinder can record up to 25mm of precipitation.
How to Measure Rainfall?
Measuring rainfall accurately is important for a variety of reasons. It is used to calculate water supplies for agriculture, to measure the amount of precipitation in any given area and to determine the impact of climate change.
While it is not difficult to measure rainfall, it is important to understand the different methods used to do so. Rain gauges are the most common way to measure rainfall.
They come in a variety of shapes and sizes, but all serve the same purpose: to measure the amount of rainfall that has fallen in a specific area.
Rain gauges are typically placed in areas where rainfall is likely to occur, such as rooftops, gardens, and open fields. They can be made out of anything from plastic containers to metal buckets, which are then filled with water and left to collect the rainfall.
The measurement of rainfall is made by noting the level of water in the rain gauge. Another method used to measure rainfall is the tipping bucket rain gauge.
This type of rain gauge consists of a bucket, which is tipped by the force of the rain as it falls. The tip of the bucket is then connected to a counter, which records the number of times it has been tipped. This type of rain gauge is often used in areas where rainfall is more sporadic