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GCSE Geography · key term
Prevailing tropical surface winds that blow from east to west across the Pacific under normal conditions.
Used by OCR
Specification 2.3.6 · Paper 2
Revise: Impacts of DroughtUnder normal conditions, trade winds blow westwards across the tropical Pacific. They push warm surface water towards the western Pacific, near Australia. Warm, moist air rises over this water, cools and condenses, bringing rainfall.
Explain the causal chain: weaker trade winds → warm water moves eastwards → less rising moist air over Australia → reduced rainfall.
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