multitaper

The multitaper method (MTM) spectral analysis indicates the existence of some decadal (11.4 year) and interannual (9.1, 6.8, 4.0, 2.7 and 2.1-2.0 year) cycles, which may potentially be the fingerprints of some proposed climate change forcings.

The Three-Core Chronology « Climate Audit 2007

Now Mann estimates his spectrum using Thomson's multitaper method - Stoica did not discuss this methodology; the purpose of the multitaper method is to reduce the variance of the estimate, so probably it's less bad than the periodogram, but still the whole procedure, whatever it is, doesn't sound promising.

Not A Solution to the Caramilk Secret « Climate Audit 2006

Percival D, Walden A (1993) Spectral analysis for physical applications: multitaper and conventional univariate techniques.

PLoS ONE Alerts: New Articles Ning Li et al. 2010

For example, the reference to multitaper methods Percival and Walden, 1993 -- incidentally, it is missing in the bibliography, though it is well known does not adequately explain the estimation of “coherence” my memory is that there are questions about how you define the taper, though I haven’t looked at this in a while.

More on Mongolia « Climate Audit 2006

Now Mann estimates his spectrum using Thomson’s multitaper method – Stoica did not discuss this methodology; the purpose of the multitaper method is to reduce the variance of the estimate, so probably it’s less bad than the periodogram, but still the whole procedure, whatever it is, doesn’t sound promising.

Not A Solution to the Caramilk Secret « Climate Audit 2006