What is the height of a rain gauge before installation?

In open areas place the gauge top approx. 2 feet off the ground. In developed areas place the gauge top approx. 5 feet off the ground.

How high off the ground should a rain gauge be?

The gauge should be installed 2-5 feet above the ground mounted on the side of a single post. The top of the rain gauge should extend several inches above the top of the mounting post. The mounting post should have a rounded, pointed, or slanted top to avoid upward splash towards the rain gauge.

Where should you place a rain gauge?

Place the gauge at least 2-5 feet off the ground on the side of a pole, with the top of the cylinder several inches above the top of the pole to prevent splash back. Make sure the top of the rain gauge is level.

Why is a rain gauge placed 30cm above the ground?

The rain gauge is kept on a platform above the level of the ground to prevent the splashing of rain water.

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Why is rain gauge placed below the ground?

The purpose of the grid is to reduce wind turbulence around the gauge and rain splash into the gauge. … In high rainfall and poor drainage areas some arrangement has to be made to prevent the pit from flooding during heavy rain or snow melt as this could cause damage to the electronics of the gauge.

What is the guideline for installation of weather station?

The surface should be covered with short grass or another natural surface. These sensors should be located a distance of at least 4 times the height of any nearby obstruction, or at least 30 m (about 100 ft), from large paved areas. Sensors should be protected (or shielded) from thermal radiation and ventilated.

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.

How do you accurately use a rain gauge?

To assure an accurate reading, the rain gauge should be placed in an open area away from trees, the house, and other outbuildings. Position the rain gauge twice as far away as the height of a tree or other object and be sure to empty it after every rain shower.

How do you measure rainfall at home?

Here’s what you’ll need to do:

  1. Measure the diameter of the bucket at the level of the rain. …
  2. Measure the diameter of the bucket at the bottom in the same way.
  3. Calculate the average of the two diameters.
  4. Divide by two to find the average radius.
  5. Find the average volume of rain = Depth x radius x radius x 3.14.
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What is rainfall depth?

The precipitation depth indicates to what depth liquid precipitation would cover a horizontal surface in an observation period if nothing could drain, evaporate or percolate from this surface. The precipitation depth of 1 mm corresponds to a liquid quantity of 1 litre to 1 m² of ground area.

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.

How do they measure inches of rain?

A rain gauge is really just a cylinder that catches rain. If an inch collects in the cylinder, it means an inch of rain has fallen. It’s that simple. Most standard rain gauges have a wide funnel leading into the cylinder and are calibrated so that one-tenth of an inch of rain measures one inch when it collects inside.

Can you use a bucket as a rain gauge?

Rain and drizzle are the easiest forms of precipitation to measure. Rain gauges are used to measure liquid water depth and can be as simple as an open bucket with a consistent cross section throughout. Meteorologists however, use more accurate instruments and slightly more sophisticated gauges to measure rainfall.

Why are rain gauges tapered?

Usually a tapering funnel of copper or polyester of standard dimension allows the rain water to collect in an enclosed bottle or cylinder for subsequent measurement.