Airmasses
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Airmasses. Given a double barrelled name, named after where they are from, then what they travel over. Tropical – from the Equator – warm Polar – from the Polar regions – cold Arctic – from over the North Pole – very cold… Maritime – over the sea – wet Continental – over land - dry.

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Airmasses

Given a double barrelled name, named after where they are from, then what they travel over.

Tropical – from the Equator – warm

Polar – from the Polar regions – cold

Arctic – from over the North Pole – very cold…

Maritime – over the sea – wet

Continental – over land - dry


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Pressure and winds...

  • Join points of equal pressure carefully with a pencil.

  • Mark and shade the area of highest and lowest pressure.

  • Draw an arrow to show the direction of air flow.

  • Name the airmass passing over the United Kingdom.

  • Suggest the weather over the United Kingdom.

These areisobars, they denote equal points of pressure. They never cross.


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Pressure and winds...

High

What type of air?

Polar Maritime

Cold and Wet Weather.

The larger the difference in pressure, the faster the wind.

Low

What type of air?


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