Objective Comments and Analysis - All Science, No Politics
Contributions by Richard James and Rick Thoman
Wednesday, January 2, 2013
December in Perspectve
Here is a scatter plot of mean temperature in December over the past 84 years. I've marked the year of the change in phase of the Pacific Decadal Oscillation (PDO), a long term variation in sea surface temperatures in the central and eastern Pacific Ocean. December 2010 and 2012 were unremarkable for a negative PDO phase.