All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 140 24 5
PDF Downloads 28 10 1

Bispectra of Sea-Surface Temperature Anomalies

Detlev MüllerClimate Dynamics Laboratory, Institute of Geophysics and Planetary Physics, UCLA, Los Angeles, CA 90024

Search for other papers by Detlev Müller in
Current site
Google Scholar
PubMed
Close
Restricted access

Abstract

Observed anomalies of sea-surface temperatures (SST) exhibit significant triple-correlations and bispectra. Features of this type are not covered by the standard Ornstein Uhlenbeck (OU) concept of SST fluctuations. The present paper derives the spectrum and the bispectrum for a simple non-Gaussian Markov process. It can be shown by means of the inverse modeling technique that this process yields a satisfactory approximation to the spectra and the real part of the bispectra of SST-anomaly data. Moreover, the analysis indicates that the imaginary part of the bispectrum cannot be represented in terms of a single-variable model.

Abstract

Observed anomalies of sea-surface temperatures (SST) exhibit significant triple-correlations and bispectra. Features of this type are not covered by the standard Ornstein Uhlenbeck (OU) concept of SST fluctuations. The present paper derives the spectrum and the bispectrum for a simple non-Gaussian Markov process. It can be shown by means of the inverse modeling technique that this process yields a satisfactory approximation to the spectra and the real part of the bispectra of SST-anomaly data. Moreover, the analysis indicates that the imaginary part of the bispectrum cannot be represented in terms of a single-variable model.

Save