Tropical Pacific waters show signs of cooling

Tropical Pacific waters show signs of cooling



13 January 2015

El Niño-like conditions in the tropical Pacific Ocean weakened over the past fortnight, after being close to or exceeding El Niño thresholds for several weeks. Despite this easing, the Bureau's ENSO tracker status remains at El Niño ALERT.

Several indicators have moved back from El Niño thresholds over the past fortnight. Sea surface temperature anomalies have notably cooled by around 0.4 °C in the key NINO regions of the central to eastern tropical Pacific Ocean, although temperatures still remain above average along much of the equator. Beneath the surface, temperatures have also eased closer to average in many areas. The Southern Oscillation index remains negative, but is not currently at El Niño thresholds as occurred during spring.

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