Declines since 1982!!! (A global warming analogy)

I get the occasional email from my skeptic friend highlighting the latest study he's seen on Watt's Up With That and how the entirety of global warming science is thrown into question.  He included this statement in his last email:

". . .the earth has been cooling now for the last 15 years, while CO2 is still rising."

This is a common meme among the skeptics: that there has been no warming recently despite increasing CO2, therefore global warming has stopped.

The main problem with this argument is that 15 years is too short a period to make any definitive statements about long-term trends.  It also fails to take into account other forcings, such as solar intensity (down), ENSO (more La Nina lately) and increased aeresols from Chinese coal burning (study here).

For today, though, I want to show this: