During the warm (or positive)phase of the Pacific Decadal Oscillation, unusually cold surface water exists along the west coast of North America, whereas over the central North Pacific, warmer-than-normal surface water prevails.

Question

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During the warm phase of the Pacific Decadal Oscillation, warmer-than-normal surface waters are found along the west coast of North America, while cooler waters prevail over the central North Pacific.

During the Warm (Or Positive)phase of the Pacific Decadal Oscillation