# Rain Gauge Calculation

Rain Gauge Calculation. Area of collector is 16.605 [rainfall=14.44 cu.in./16.605=0.87]. The funnel makes the rain gauge measurements stretch out so that it is more accurate.

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A rain gauge is simply an instrument that is designed to measure the amount of rain that reaches the ground surface during a storm. The funnel makes the rain gauge measurements stretch out so that it is more accurate. If you look at the data from the last test in the table file above. the time from the first tip to the last tip was 14 minutes and 42 seconds (14:42). which is 882 seconds.

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The volume of rain measured in the measuring cylinder directly represents the rainfall volume in cm of water depth i.e. Select the rainfall depth units. such as inches. feet or yards.

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You can adjust correction factor in main program if your unit differs from mine. All rain gauges have a rainfall catchment area and a rainfall amount measurement.

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In that case you would have to do some fancy math to get the numbers to come out the same. Rain gauge is a meteorological instrument that is used by meteorologists and hydrologists to measure the rain precipitation in a given amount of time per unit area.

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Select the rainfall depth units. such as inches. feet or yards. The catchment area is the region over which the rain is collected.

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Factors such as evaporation. wetting. and. To measure solid precipitation such as snow and hail with such a device. a known amount of warm water is added to melt the precipitation;

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The components are the same. Easy way to tell is hold a ruler against the tube and compare the ruler to the gauge.

#### In That Case You Would Have To Do Some Fancy Math To Get The Numbers To Come Out The Same.

1/1.000 inches 1/100 inches 1/10 inches 1/4 inches 1/3 inches 1/2 inches 2/3 inches 3/4 inches 1 inch 1 1/2 inches 2 inches 3 inches 4 inches 5 inches 6 inches 7 inches 8 inches 9 inches 10 inches 12 inches 15 inches 20 inches. Radius x radius x pi (if your calculator doesn’t have a. The number of gauges required to give a reliable estimate of catchment rainfall increases where rainfall gradients are marked.

#### If The Gauge Numbers Are Farther Apart Than The Ruler It Has A Funnel.

A minimum density of 1 per 25 km 2 should be the target. bearing in mind that significant thunderstorm systems may be only about 20 km 2 in size. Area of collector is 16.605 [rainfall=14.44 cu.in./16.605=0.87]. You are on the right track.

#### The Measuring Object Would Be Some Kind Of Volume Measurement For A Liquid.

The total amount is then measured with the measuring glass. and the amount of warm water added is subtracted from the total to obtain the precipitation amount. You do not need to convert the rain gauge area because the rain gauge has been calibrated to give you the correct measured depth of rainfall as a linear. You can adjust correction factor in main program if your unit differs from mine.

#### The Measured Rainfall Was 1.12 Inches.

Now that i’ve described all that can go wrong measuring rainfall. let me add that. putting a rain gauge in the right place. and taking an accurate rainfall measurement is fairly easy. From amount of rain and area. Select the rainfall depth units. such as inches. feet or yards.

#### The Volume Of Water Collected In Cm/3 Divided By Area Of The Aperture (Hole I.e.

If an 11 inch plastic rain gauge is used in lieu of a srg. it too becomes the primary point of calculations. Rainfall height = volume of rain collected / catchment area A rain gauge is simply an instrument that is designed to measure the amount of rain that reaches the ground surface during a storm.