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- The Effect of Gleissberg’s “Secular Smoothing” Mon, 19 May 14, 5:00pmGuest Post by Willis Eschenbach ABSTRACT: Slow Fourier Transform (SFT) periodograms reveal the strength of the cycles in the full sunspot dataset (n=314), in the sunspot cycle maxima data alone (n=28), and the sunspot cycle...
- The Slow Fourier Transform (SFT) Sun, 4 May 14, 4:29pmGuest Post by Willis Eschenbach While investigating the question of cycles in climate datasets (Part 1, Part 2), I invented a method I called “sinusoidal periodicity”...
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