When you measure the amounts of rainfall, know that this procedure is done by using rain gauges that function in three different ways. The three main types of rain gauges are the standard gauge, weighing gauge, and tipping bucket gauge. Knowing how each rain gauge function and how they are set up is crucial towards you getting accurate results and readings. With that said, this article will serve to provide a short yet concise overview of each type of rain gauges.
Standard Rain Gauge
The standard or funnel rain gauge records rainfall manually. It works by catching the falling rain onto a funnel-shaped collector that is then attached to a measuring tube. These tubes are around eight to 10 inches and have been used for more than a century. The diameter of the collector will be 10 times more than the tube. That way, the standard rain gauge works by magnifying the liquid by a factor of 10. By magnifying the rain in this manner, you can yield accurate measurements down to a hundredth of an inch. The amounts that go beyond tube capacity are caught in the outer shell of the rain gauge, which will allow the recorder to pour the liquid onto the tube and fill it back up if necessary. Click here to learn more about it.
Tipping Bucket Rain Gauge
Rain gauge function is quite different from the standard gauge. Instead of a tube, the receiving funnel leads to either one or two smaller buckets. Filling of a single bucket will occur at a hundredth of an inch. This rain gauge will result in the liquid being tipped into the outer shell of the, which will trigger the second bucket to replace its position. The process will now repeat itself, allowing precise measurement of rainfall amount and intensity. The tipping bucket rain gauge has become a standard for wireless weather stations. In weather stations, an electric contact is made whenever a bucket tips, which causes the pen to register a mark. So while we have multiple modern digital gauges available, many people still use basic technology.
Weighing Rain Gauge
The universal weighing rain gauge is important for climatology use. The reason for this is because of a vacuum that accounts for the effects of wind. This process allows more rainwater to enter the gauge. Keep in mind that these gauges are precise in the measuring of rainfall amount and intensity as the weighing mechanism is used to measure depth and time simultaneously. Recording is also carried out much the same way as the older rain gauges for the tipping bucket gauges.
For more information about how a rain gauge function, click here. You can also read other articles about the rain gauge and other scientific instruments.