| Air set in motion by: |
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| • | Absorption
of energy at surface followed |
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| by
transfer of heat to lowest layer of air |
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| • | Heated
parcels become buoyant relative |
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| to
nearby cooler parcels, thereby rising |
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| • | Rising
of air parcel leaves lower pressure |
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| at surface |
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| • | Dense,
cool air moves towards the area of |
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| low
pressure |
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| • | Pressure
gradient force drives winds |
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