One thing that is for certain is that
these oscillations revert to the mean over the long term, and can not be used to explain a natural secular warming trend, which is what the climate sceptics seem to be running on about recently.
The reason for this is that the barycentric
oscillation reverts to a mean of zero as the positive and negative excursions balance out over the years.
Not exact matches
Judith's point that AO and PO
oscillations and multidecadal waves which may go in 60, 80 or 100 year cycles is completely ignored by saying that Natural variation should be ignored over a long time as it
reverts to the
mean.