The Pacific Decadal Oscillation (PDO) swithches from “warm” to “cool” phase approximately every 20-30 years. In April 2008, NASA reports it switched to cool. This graph shows previous data.
PDO Since 1900
The Pacific Decadal Oscillation (PDO) swithches from “warm” to “cool” phase approximately every 20-30 years. In April 2008, NASA reports it switched to cool. This graph shows previous data.