Friday, October 19, 2012
Weakly Damped Lost in the Noise
Natural internal oscillations appear to be weakly damped. Since the forcings are not using the same dampening, that leads to fun "seeing" what is going on in the climate system. To dig out some of the "signal" there are some simple ways that don't require a ton of work.
This chart is the HADCRUT4 detrended 30-30 or tropical data with 11yr moving average, 4 year moving average that is not labeled for some reason and the average of the two moving averages. The 11 year averaging smooths the curve more than the 4 year moving average and the average of the two is not all that informative. By subtracting the 4 year moving average from the 11 year moving average, you can highlight the differences and remove the trends.