What is the criteria of choosing rain gauge network?
The spot at which rain-gauge is to be installed should be truly representative of the area, of which it is supposed to give depth of rainfall. ADVERTISEMENTS: 2. The rain-gauging station should be easily accessible to the observer at all times.
Does the diameter of a rain gauge matter?
The larger the opening, the lower the statistical error in measurements in real-world applications. Always choose the largest size that your budget allows. Rain gauge resolution determines the smallest amount of precipitation that one is able to measure and the accuracy of short-term rain intensity measurements.
Can a rain gauge be any size?
The 20 inch gauge is the norm throughout the National Weather Service. However, other agencies like the U.S. Forest Service often use the smaller gauge. The inner measuring tube of the large NWS gauge holds 2.0 inches of precipitation. The measuring tube of the small gauge holds 0.50 inch.
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%.
Is a 5 gallon bucket an accurate rain gauge?
Most rain gauges for automatic weather stations are of the swinging bucket type, which must be installed in an accurately horizontal plane for correct operation.” The most accurate rain gage we have is a 5 gallon bucket in the middle of the driveway turn around.
How do I know if my rain gauge is accurate?
Take into account the resolution of the rain gauge. If the resolution is 0.01 inches for example, the measurement would be 0.01 inches/tip x 39 tips = 0.39 inches. Important Note: Make sure the weather station display is set to total rain and not rain rate.
Where is the best place to put a rain gauge?
Location! Keep your rain gauge in open areas as far away from obstacles as possible, whether trees, houses, or fences. Having your gauge level is another great way to keep the readings accurate. This will help rain from splashing out and to help with winds blowing.
What is the standard size of rain gauge?
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.
Why is a rain gauge placed 30 cm above the ground?
The rain gauge is kept on a platform above the level of the ground to prevent the splashing of rain water.