for resource -warning very long post, page-6

If Scafetta was correct about a 60 (or 20 year) 'cycle' and assuming there was no greenhouse gas warming, then the average global temperature anomaly would be back to what it was sixty years ago in 1951 (or twenty years ago in 1991).

It's a quite a bit hotter than it was back in the early 1950s.

(Even more fancifully, last March John McLean, a computer person, 'predicted' 2011 would be the coldest year globally since 1956!)

Here is an overview of how Scafetta is constantly chasing mysterious cycles.

You can find a pattern in anything if you look hard enough. Curve-fitting is fun but not very meaningful. (Spencer fits a polynomial to his charts but makes it clear it's for entertainment purposes only.)

For it to be shown as real, it has to be able to predict forwards as well as backwards - and provide a physical explanation (plausible hypothesis) that can be tested.

Scafetta has not done this. And it keeps getting hotter, showing that each decade there is more energy being retained on earth.

There are obviously oscillations in different things that affect climate. Some are more or less regular (like the eleven year +/- a couple of years solar cycle) - some irregular (like ENSO). And there are other oscillations that are quasi-regular or more probably irregular (eg Pacific decadel oscillation and North Atlantic oscillation).

Oscillations (such as changes in the ocean) that are detectable and explicable and regular or irregular do not alter the fact that greenhouse gases are increasing and heating up the world. Internal fluctuations are happening at the same time as the greenhouse gas warming - not replacing it.