It’s harder to tell than you think
Joint Post: Jo Nova and Tony Cox
Even most skeptics agree that the world has been warming during the last 50 years, but there is apparently no significant underlying warming trend in 46 out of 47 years of data. Something decidedly unusual happened to the world in 1977 and we don’t know for sure what it was. The world got warmer, and the change “stuck”. But there were no extra emissions of CO2 in that year, so there is no reason to pin this to CO2.It’s difficult to believe we are not sure – but the last 50 years of warming trend depends on that single stepwise leap in 1977. Look at the graph below. Does it show one strong underlying warming trend, or is it really a trend so insignificant that it wouldn’t exist if there was not a step change that artificially bolstered it?
“If CO2 is having an impact on our atmosphere it is impossible to say with any certainty what that effect has been.”
If we accept the theory that added CO2
will have X effect on global temperature,
it is obvious that other factors have had
a greater effect. Indeed, these other
factors have made the increase in CO2
irrelevant.
Man Made Global Warming is dead.
Just waiting for the funeral.
If it is dead, can you get Obama and company to acknowledge that?