Why a fence is built around a weather station and why is not built too high?

1. Why is a weather station fenced?
2. Why is the Stevenson screen a set distance from the ground?
3. What is the purpose of the Stevenson screen?
4. What is inside the Stevenson screen?
5. What is the importance of weather station?
6. Where should weather stations be located?
7. Why Stevenson screen is facing north?
8. Why is a hygrometer kept in a Stevenson screen?
9. Why is a Stevenson screen made of wood?
10. What is a weather probe?
11. Is a rain gauge kept in a Stevenson screen?
12. Where is the barometer kept at the weather station?
13. Why should instrument shelter be painted white?
14. Why does the Stevenson screen have a double roof?
15. How does a weather station work?
16. What information do weather stations collect?

Why is a weather station fenced?

It is not always essential to enclose the weather station with a fence, but it is advisable in many cases, to prevent physical interference and damage to cables laying on the ground. ... If theft or vandalism may be a problem, a surrounding fence is advised.

Why is the Stevenson screen a set distance from the ground?

It is kept 1.25m/4.1ft (UK standard) above the ground by legs to avoid strong temperature gradients at ground level, has louvred sides to encourage the free passage of air, and is painted white to reflect heat radiation, since what is measured is the temperature of the air in the shade, not of the sunshine.

What is the purpose of the Stevenson screen?

The purpose of a Stevenson screen is to shield thermometers from precipitation and from direct radiation from outside sources while allowing air to circulate freely round them. The screen thus creates, as nearly as possible, a uniform-temperature enclosure at the same temperature as the air outside.

What is inside the Stevenson screen?

It forms part of a standard weather station and holds instruments that may include thermometers (ordinary, maximum/minimum), a hygrometer, a psychrometer, a dewcell, a barometer, and a thermograph. ... The common type of Stevenson screen has a maximum and minimum thermometer for daily readings.

What is the importance of weather station?

The weather stations have helped to take the precautionary measures against the destructive rains, winds, severe high or low temperature, diseases and pests. The use of weather stations helps to cope with the frost and high temperature in summer.

Where should weather stations be located?

Ideally mounted at a height of 4 to 6 feet above the ground. Ideally located at a horizontal distance of 4 times the height of the nearest obstruction. Ensure the gauge is mounted level to the ground, away from any horizontal surface that can introduce rain-splashing or surrounding snow buildup.

Why Stevenson screen is facing north?

Stevenson screens are always painted white to better reflect the sun's rays. ... Stevenson screens are always installed so that the door opens facing north, to keep the sun from shining directly on the thermometers and affecting the readings.

Why is a hygrometer kept in a Stevenson screen?

Photo: This traditional weather station contains a hygrometer and other weather forecasting equipment. The white louvered box, called a Stevenson screen, protects the instruments from the direct heat of the Sun but allows air to circulate inside, so giving more reliable measurements.

Why is a Stevenson screen made of wood?

The box is made of wood to prevent absorption and conduction of heat. The four sides of the box are louvered so that the air will still be able to enter and circulate freely.

What is a weather probe?

This plug-and-play weather probe and shield provides accurate humidity and temperature readings used in the emissions calculations. The weather probe must be inserted in the shield provided with the unit. The shield protects against rain and solar radiation which could cause incorrect readings.

Is a rain gauge kept in a Stevenson screen?

The Weather station

A major structure in a weather station is a Stevenson screen. The other instruments in a weather station include a rain gauge, wind vane, anemometer, evaporimeter, windsock, sunshine recorder etc.

Where is the barometer kept at the weather station?

Most weather stations house their barometric pressure sensor within the weather station display console. Therefore, placement of the weather station console receiver is an important consideration since the physical environment of the console will influence air pressure measurement readings.

Why should instrument shelter be painted white?

Whatever paint you use, be sure to keep your shelter painted white to prevent excess heat absorption by the wood. ... Fading paint exposes the wood frame, allowing heat radiation to be absorbed into the shelter unit & causing temperature readings inside the box to be higher than what is actual ambient air temperature.

Why does the Stevenson screen have a double roof?

Stevenson screen has a double roof to reduce excessive heat from solar irradiation.

How does a weather station work?

At the most basic level, an automatic weather station works by measuring atmospheric conditions and transmitting them to a network, forecaster, or display. ... Some parts of a weather station include a thermometer to measure temperature and a barometer to measure atmospheric pressure.

What information do weather stations collect?

Each station measures weather conditions such as temperature, atmospheric pressure, wind speed and direction, amount of cloud cover, and precipitation. The National Weather Service uses the data to make weather maps. clouds and rain.