"Australia’s south-east could be in for a marine heatwave that is literally off
the scale, raising the prospect of significant losses in fishing and
The Bureau of Meteorology has forecast a patch of the Tasman Sea off Tasmania
and Victoria could be at least 2.5C above average from September to February,
and it could get hotter.
Oceanographer Grant Smith said the colour-coded scale the bureau uses to map
forecast sea surface temperature anomalies stops at 2.5C.
“We didn’t account for anomalies that high when we developed this ... it could
be 3C, it could be 3.5C, but we can’t see how high it goes,” he said.
Smith said he could not be sure that it was the first time forecast
temperatures had gone beyond the scale’s upper limit, but it was the first time
he had seen it.
South-eastern Australia is a known climate change hotspot with its waters
warming about four times faster than the global average.
“The east Australian current brings warm water south and then also the rising
atmospheric temperature cooks it at the same time,” CSIRO research director
Alistair Hobday said."
*** Xanni ***
Chief Scientist, Xanadu
Partner, Glass Wings
Manager, Serious Cybernetics