For more information on individual Report Card indicators, please see “Report Card indicator Description and Methods” in the Appendix of this Report (p.257).
Mean:
Trend:
The leading mode of monthly sea surface temperature anomalies in the North Pacific Ocean, poleward of 20 °N. The monthly mean global average SST anomalies are removed to separate this pattern of variability from any “global warming” signal that may be present in the data. The winter index is the average monthly values from December – February. Data from https://oceanview.pfeg.noaa.gov/erddap/tabledap/cciea_OC_PDO.htmlTable?time,PDO. (See Lemagie and Bell, p.30)
Contact: emily.lemagie@noaa.gov