Autocorrelation of ENSO power spectrum

In Chapter 12 of the book, we have a description of the mechanism forcing the El Nino / Southern Oscillation (ENSO) behavior.¬† An important ingredient to the modeled forcing¬† is an annual impulse (with a likely biennial asymmetry) that modulates the hypothesized lunar tidal forcing.¬† We will show next how to confirm that the annual impulse exists simply by analyzing the ENSO power spectrum …

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