Lots of superlatives for September's climate anomalies, but a remarkable aspect to me is the discrepancy between the tropical and extratropical N Pacific.

This chart illustrates: typically, the stronger El Niño, the more positive the PDO.

Record high AMO too, of course (+0.9) pic.twitter.com/ewdfcHM1qc

— World Climate Service (@WorldClimateSvc) October 6, 2023