Rarely has an alarmist handed us such a big gift, as John Cook did this week. His graph below shows that reductions in the most potent greenhouse gases CFC, CH4 and N2O have been close to the level of Hansen’s Scenario C.
So what exactly was Scenario C? In his 1988 paper, Hansen wrote
scenario C assumes a rapid curtailment of trace gas emissions, such that the net climate forcing ceases to increase after the year 2000.
What Cook is implying is that we have done a phenomenal job of reducing greenhouse gas emissions, and have nearly achieved Hansen’s scenario C state of no new forcings. We have already accomplished far beyond the requirements of Kyoto, or anything they dreamed up in Copenhagen or Cancun.
But it is better than it seems, because Cook also shows that temperatures are already below Scenario C. Mission accomplished! Time for climate alarmists to declare victory and move on.
Thank you John.