How does measurement using a standard rain gauge differ from measurement using a tipping bucket gauge?

Is a bucket an accurate rain gauge?

Rainwise tipping bucket rain gauges have an accuracy rating of 2% at 1.5” per hour. This means that the difference between the amount of rain collected by the manual rain gauge and the amount recorded by the Rainwise tipping bucket rain gauge for the same time period should be no more than 2%.

What is standard rain gauge?

Instruments. 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.

Why are rain gauges different sizes?

Rain gauge size determines the repeatability and also the accuracy of a rain gauge. … A finer resolution rain gauge will have a lower limit on the maximum rain rate it is able to measure accurately, which holds true for tipping bucket, siphoning and even weighing rain gauges.

What makes an accurate rain gauge?

The height of a rain gauge typically ranges from 5 to 20 inches, while the diameter of its cylinder ranges from 2 to 8 inches. It’s quite simple: the larger the cylinder, the more rain collected and the more accurate the readings are. If you live in an area where it rains a lot, a larger rain gauge is a wise choice.

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How do you ensure the accuracy of a rain gauge?

Tip: To have accurate results, ensure that all the water in the container is poured into the rain gauge before the test is complete. As the water flows into the rain gauge, the percentage error decreases until the measured value is the same as the expected rainfall. At that point, the error percentage is 0.00.