Space-time cross spectral analysis using the maximum entropy method

Details Space-time cross spectral analysis using the maximum entropy method Space-time cross spectral analysis using the maximum entropy method

Oct 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mesjj..59..620h&link_type=abstract

Meteorological Society of Japan, Journal, vol. 59, Oct. 1981, p. 620-624.

Mathematics

Logic

6

Maximum Entropy Method, Planetary Waves, Power Spectra, Space-Time Functions, Spectrum Analysis, Atmospheric Circulation, Dynamic Models, Geopotential Height, Sine Waves

Scientific paper

Space-time cross spectra are experimentally estimated from sinusoidal waves using the multivariate maximum entropy method (MEM), which gives power spectra, cospectra, phase difference, and coherence with fine frequency resolutions from short time records. A space-time spectral analysis is made of external Rossby waves simulated by a GFDL spectral general circulation model. The MEM cross spectral analysis can be used to replace conventional composite analyses to find the place distribution of waves based on a short time record. The analysis can also give additional information of coherence and can distinguish eastward and westward moving waves.

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