This week's Deep Dive looks at one of the most remarkable climate stories of recent years: a potentially record-breaking El Niño and the weather events unfolding around the world as a result.
We explain what El Niño is, why the current event is starting to break records, and whether it has already surpassed the 2015/16 event. We also explore the difference between ONI and RONI and why meteorologists are pay attention to both measures of ENSO strength.
Bringing you this Deep Dive is Met Office meteorologist Aidan McGivern.
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