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Weather measurement tools.
How do we measure the weather?
To be able to make the best weather forecasts we need to know, with as much detail and accuracy as possible, what the weather is doing right now.
How is weather measured
To do this we measure all the different parts of the weather and record it, this is called a weather observation.
Measuring temperature
Temperature is a measure of how much heat energy something has; when measuring the weather we usually want to know the temperature of the air.
To measure temperature we use a thermometer, you probably have one of these at home for taking your temperature when you are feeling poorly.
We used to use thermometers that had mercury in them, but all of these are no longer used as mercury is dangerous if it were to leak out or the thermometer was to break. Instead we now use digital thermometers or alcohol thermometers.
To measure the temperature accurately we keep our thermometer a Stevenson screens.
This is a white box with slats in it to allow air to flow through the box. Stevenson screens face north, which combined with their colour and slats, give us the best measure o
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