7NEWS: BoM shares dire weather warning for Australia ahead of summer
Sea surface temperatures in the tropical Pacific Ocean are exceeding the thresholds needed for an El Nino event, but the atmosphere patterns are pointing toward more neutral conditions.“The atmosphere hasn’t quite coupled or reinforced the pattern that we see in the ocean that’s typical of an El Nino event,” Braganza said.Hot global temperatures are keeping all of the oceans warmer than expected, which could be affecting the atmospheric response to El Nino.
“Historically, we haven’t seen a situation like this before where we’re going into an El Nino event with record global ocean temperatures,” Braganza said. Antarctic sea ice was also at the lowest levels ever recorded in August, with a chunk of ice the size of Western Australia missing.Climate modelling suggests surface temperatures in the Indian Ocean will change in late winter or early spring, bringing less rainfall and exacerbating the drying influence from El Nino.
The bureau is continuing to forecast warmer and drier conditions across the country between August and October.
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