Rain Gauges |
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The metal cylinder in the photograph on the left is a rain gauge, with metal strips surrounding it to help block wind. Once a week Forest Service technicians check to see how much rain has collected in the cylinders. A small amount of oil is placed in the cylinder to help keep the precipitation from evaporating; during the winter, a small amount of antifreeze also is placed in the cylinder to melt frozen precipitation.
The photo on the right is of the rain gauge that is part of the weather station located just in front of the main Hubbard Brook Ecosystem Laboratory and Forest Service Headquarters.
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