La Niña WATCH remains, while strong negative Indian Ocean Dipole continues
Michael Chen
Senior Web Developer
All climate models indicate more cooling of the tropical Pacific Ocean is likely, but only two of eight models exceed La Niña thresholds for an extended period.
Despite some cooling of the tropical Pacific Ocean surface waters, ENSO indicators remain neutral and well shy of La Niña thresholds. In contrast, a strong negative Indian Ocean Dipole (IOD) event continues, with ocean temperature well above average in the eastern Indian Ocean and below average near Africa.
All international climate models surveyed by the Bureau indicate the negative IOD will persist until the end of spring, which historically has brought increased rainfall to southern Australia.
Sea surface temperatures have cooled slightly in the tropical Pacific over the past fortnight. Some atmospheric indicators have shifted slightly towards La Niña thresholds, but all remain within neutral bounds.
All climate models indicate more cooling of the tropical Pacific Ocean is likely, but only two of eight models exceed La Niña thresholds for an extended period.
A La Niña WATCH (indicating a 50% chance of La Niña in 2016) remains, but if La Niña does develop it would most likely be weak.
May to July 2016 was Australia’s third-wettest May–July on record. During negative IOD events, southern Australia typically experiences above average winter–spring rainfall and cooler than average daytime temperatures, with warmer daytime and night-time temperatures in northern Australia.
Source: comunicaffe.com/la-nina-watch-remains-strong-negative-indian-ocean-dipole-continues/
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