Big climate cycle means wet decades

Perhaps the PDO flips from warm to cool because of a sequence of La Niñas or El Niños, and not the PDO affecting the sequence?

Repeated El Niños, for example, would be expected to increase sea-surface temperatures. Whatever the connection, the bureau is not satisfied that the pattern is established or can be used to forecast.

Power says the pattern of El Niños and La Niñas could be distinctly different over different decades or even generations with more of one type of pattern than another.

But then repeated coin tosses would also show similar patterns with more heads than tails for a time before the pattern reverses. Overall, there had been about the same number of El Niños and La Niñas.

Another complication was the present high global temperatures and record high sea temperatures around Australia, Power says.

Whatever may come of all this scientific enquiry, as readers can see, the higher temperatures forecast by the IPCC, if and when they ever occur, may not result in lower rainfall.

In fact, as scientists really don’t know how these cycles work, forecasting just how rainfall may change due to those supposed higher temperatures is almost certainly a waste of time.