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What's behind the heatwave
What's behind the heatwave? Australia heated up this week
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as a mass of hot air swept east across the
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continent. The dominant climate
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driver behind the heat has been a positive Indian Ocean Dipole (IOD) - an event where sea surface
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temperatures are warmer in the western half of the ocean, cooler in the
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east. The difference between
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the two temperatures is currently the strongest in
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60 years. The warmer waters cause higher-than-average
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rains in the western Indian Ocean region, leading to flooding, and drier conditions across South East Asia and Australia.