Tamsin Edwards, a climatologist at the Open University in the UK, says it is too early to
tell, since changes in the PDO can only be detected through statistical analysis of large amounts of
data on
ocean surface
temperatures.
By contrast, there is quite a lot of
data now
telling us that CO2 is not a climate driver: We did the experiment of adding a large slug of CO2 to the air and the
temperature stopped rising in 1997, the stratosphere stopped cooling in 1995 and the
oceans showed no warming down to 700m when we replaced guesswork with accurate measurement in 2003.