Depressions and Anticyclones

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  • Depressions form over the Atlantic ocean, then move east over the UK- Depressions form when warm air meets cold air:
    • Warm , moist air from the tropics meets cold, dry air from the poles
    • The warm air then rises above the cold air because it is less dense
    • Condensation occurs as the warm air rises, causing rain clouds to develop
    • Rising air also causes low pressure at the Earth's surface
    • So winds blow into the depression in a spiral - winds always blow from areas of high pressure to areas of low pressure
    • A warm front is the front edge…

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