Maybe I just answered my own question. If you take data for global temperature anomaly from NASA's webpage (https://climate.nasa.gov/vital-signs/global-temperature/), and compare it to the PDO graph on the NOAA webpage (https://www.ncdc.noaa.gov/teleconnections/pdo/), I see that 2 of the time frames of highest temperature increase (ie. 1933-1944 positive PDO phase, and 1994-present negative PDO phase), show that global temperature change and PDO phases are not correlated. Would you conclude that PDO phase does not correlate with global temperature trends? Any research that concludes this more effectively than my instant analysis here?