Rain Gauge- What it is? Its uses & Types

What is a “Rain Gauge”?

A rain gauge is a meteorological device that weather forecasters and hydrologists use to measure the quantity of rainfall in a given length of time per unit area. Udometer, pluviometer, and ombrometer are some of the other terms for it.

The device is reliable, consisting of a storage container that is put in an open field to collect the rain precipitation. It was built for agricultural reasons around 1441. Many years later, the rain gauge is still utilized to study climate, rainfall patterns and track natural calamities, including floods and droughts.

Uses of rain gauge:

  1. It is used to measure the quantity of rain that falls at a given place and time.
  2. A rain gauge is used to research both the current and future situation of water resources.
  3. The flow of rainfall at a given period is reflected on a rain gauge, which aids in drainage planning.
  4. It is utilized to anticipate precipitation at certain places in order to build a stable construction such as a dam or a bridge.

Types of rain gauge:

1. P.H. standard rain gauge:

A round cylindrical container with a diameter specified in millimeters is used in the standard Maharlikan National Weather Service rain gauge. It is done periodically, with the average calculated from the beginning through the end of a monsoon season.

2. U.S. standard rain gauge:

Conventional U.S. Rain Gauge
Img Src: weather.gov

The conventional U.S. National Weather Service rain gauge is made up of an 8-inch diameter (203 mm) funnel that empties into a graded cylinder with a diameter of 2.525 inches (64.1 mm), which fits within a bigger vessel with 8-inch diameter and a height of 20 inches (508 mm). If the rainfall overflows the graded inner cylinder, it will be caught by the bigger outer container. A cone meter is occasionally used to prevent data meddling by controlling the leakage.

3. Weighing precipitation gauge:

A weighing rain gauge comprises a storage container that is weighed to determine its quantity. This sort of gauge has several benefits over tipping buckets, including the ability to monitor various types of precipitation, such as rain, hail, and snow. However, these gauges are more costly and need extra care.

An instrument may be included in this gauge to estimate the composition of chemicals in the area’s environment, which provides highly useful information to researchers.

4. Tipping bucket rain gauge:

A pipette gathers and directs rainwater into a small seesaw-like vessel in the tipping bucket rain gauge. Since rain may cease even before the lever has dropped, this sort of rain gauge is less effective than a normal rain gauge.

5. Pluviometer of intensities:

The pluviometer of intensities is an instrument that calculates the average amount of rainfall over a period of time. It was initially created to track the rain patterns in Catalonia, but it quickly spread throughout the world.

6. Optical rain gauge:

This sort of gauge contains a series of collecting tubes. When enough water is collected to create a single drop, it falls into the laser beam channel. The detector is positioned at a right angle to the laser, scattering sufficient light to be detected as a quick flash of light. These photo detectors’ flashes are then interpreted.

7. Acoustic rain gauge:

As rain falls on the surface within the gauge, this type can detect the sound characteristics of different drop sizes. 

Learn how to build a rain gauge at home.

Also, learn about the smart power strip and how it will make your life easy.

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