claim: When the PDO last switched to a cool phase, global temperatures were about 0.4C cooler than currently.
evidences.evidence_id: Climate variability:96
evidences.article: Climate variability
evidences.evidence: The temperature changes occurred somewhat suddenly, at carbon dioxide concentrations of about 600–760 ppm and temperatures approximately 4 °C warmer than today.
evidences.votes: NOT_ENOUGH_INFO REFUTES
evidences.evidence_id: Pacific decadal oscillation:48
evidences.article: Pacific decadal oscillation
evidences.evidence: 1924/1925: PDO changed to a "warm" phase.
evidences.votes: NOT_ENOUGH_INFO REFUTES
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: NOT_ENOUGH_INFO NOT_ENOUGH_INFO
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: NOT_ENOUGH_INFO NOT_ENOUGH_INFO
evidences.evidence_id: Pacific decadal oscillation:56
evidences.article: Pacific decadal oscillation
evidences.evidence: The 2014 flip from the cool PDO phase to the warm phase, which vaguely resembles a long and drawn out El Niño event, contributed to record-breaking surface temperatures across the planet in 2014.
evidences.votes: NOT_ENOUGH_INFO NOT_ENOUGH_INFO