An area of high atmospheric pressure and they tend to have a very low pressure gradient and light, variable winds.
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Card 7
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The mixture of gases surrounding the Earth.
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Card 8
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The force per unit area exerted against a surface by the weight of air above that surface.
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Card 9
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A natural or artificial reservoir that accumulates and stores some carbon-containing chemical compounds for an indefinite period.
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Card 10
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Occurs when there are 'urban canyons' which concentrate all airflow in one direction.
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Card 11
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The average annual pattern of weather experienced by a place. It is based on records from the last 30 years and describes the seasonal pattern of temperatures and precipitation.
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Card 12
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A boundary between warm and cold air where cold air is advancing on warm air, undercutting it and causing the warm air to rise. Associated with rainfall.
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Card 13
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Rainfall resulting from the uplift and subsequent cooling of air that has been heated by contact with a warm land surface.
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Card 14
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The effect of the Earth's rotation on air flow.
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Card 15
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The use of annual growth rings of trees to infer past climatic conditions. Counting the rings can also give us a date.
