Christopher Booker looks at the mounting evidence that global warming is real.
Read this and wonder why seemingly intelligent people like David Farrar make silly statements like:
My position on climate change is that greenhouse gas emissions beyond doubt cause warming. There is a legitimate debate about how much warming will occur, as we do not know for sure how the rest of the very complex climatic system will respond.
And about that warming that David says is beyond doubt?
In convincing the world that we must make such a dramatic response to man-made climate change, nothing has been more persuasive than those graphs that purport to show global temperature soaring to dangerous levels.
That iconic “hockey stick” graph, showing temperatures recently shooting up into the stratosphere, may now have been discredited. But just as important have been all those graphs showing how temperatures have changed in recent decades. These have the effect of greatly exaggerating those changes, by narrowly focusing just on what are called temperature “anomalies”, showing how they have risen and fallen round their average level in the past 30-odd years.
What the graphs do not show is the actual level of global temperature, as it is measured above freezing point. In other words, they leave out by far the greater part of the total picture. So the respected Canadian environmental writer, Lawrence Solomon, recently had the bright idea of publishing in his Financial Post newspaper column a graph showing the temperature changes of the past 15 years in proper perspective, using figures from the most prestigious of all official temperature records, compiled by the UK Met Office and its Hadley Centre. Read more »