claim: In 1946, PDO switched to a cool phase.
evidences.evidence_id: Pacific decadal oscillation:3
evidences.article: Pacific decadal oscillation
evidences.evidence: There is evidence of reversals in the prevailing polarity (meaning changes in cool surface waters versus warm surface waters within the region) of the oscillation occurring around 1925, 1947, and 1977; the last two reversals corresponded with dramatic shifts in salmon production regimes in the North Pacific Ocean.
evidences.votes: SUPPORTS SUPPORTS
evidences.evidence_id: Pacific decadal oscillation:48
evidences.article: Pacific decadal oscillation
evidences.evidence: 1924/1925: PDO changed to a "warm" phase.
evidences.votes: REFUTES NOT_ENOUGH_INFO
evidences.evidence_id: Pacific decadal oscillation:49
evidences.article: Pacific decadal oscillation
evidences.evidence: 1945/1946: The PDO changed to a "cool" phase, the pattern of this regime shift is similar to the 1970s episode with maximum amplitude in the subarctic and subtropical front but with a greater signature near the Japan while the 1970s shift was stronger near the American west coast.
evidences.votes: SUPPORTS SUPPORTS
evidences.evidence_id: Pacific decadal oscillation:5
evidences.article: Pacific decadal oscillation
evidences.evidence: During a "warm", or "positive", phase, the west Pacific becomes cooler and part of the eastern ocean warms; during a "cool" or "negative" phase, the opposite pattern occurs.
evidences.votes: REFUTES NOT_ENOUGH_INFO
evidences.evidence_id: Pacific decadal oscillation:50
evidences.article: Pacific decadal oscillation
evidences.evidence: 1976/1977: PDO changed to a "warm" phase.
evidences.votes: SUPPORTS NOT_ENOUGH_INFO