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Seminar Abstract

Norman Treloar - Oct 5, 2001

Astronomical tidal influences on climate variability

Luni-solar tidal forces are a possible exogenous cause of terrestrial climate variability on time scales of one to one hundred years. Variability in the Southern Oscillation, Inter-decadal Pacific and Pacific Decadal Oscillations appears to be at least partly attributable to these luni-solar tidal effects. Since the process is driven by the changing, but highly predictable, positions and distances of the Moon and Sun, the tidal approach may improve the accuracy and lead time of climate forecasts.

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