Causes of Decadal Climate Variability over the North Pacific and North America

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Science  28 Oct 1994:
Vol. 266, Issue 5185, pp. 634-637
DOI: 10.1126/science.266.5185.634


The cause of decadal climate variability over the North Pacific Ocean and North America is investigated by the analysis of data from a multidecadal integration with a state-of-the-art coupled ocean-atmosphere model and observations. About one-third of the low-frequency climate variability in the region of interest can be attributed to a cycle involving unstable air-sea interactions between the subtropical gyre circulation in the North Pacific and the Aleutian low-pressure system. The existence of this cycle provides a basis for long-range climate forecasting over the western United States at decadal time scales.

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