Climate Change Act

Debate between Lord Lilley and John Redwood

Tuesday 10th September 2013 Westminster Hall

[Mr Lilley]

Yes, but I am just about to.

The Act was introduced with no consideration of the uncertainties. Projections from climate models were taken as if they were infallible. In 2007, just before the Act was introduced, the Met Office Hadley Centre said:

“We are now using the system to predict changes out to 2014. By the end of this period, the global average temperature is expected to have risen by around 0.3° C compared to 2004, and half of the years after 2009 are predicted to be hotter than the current record hot year, 1998.”

As we know, the pause that was already well established in 2008 has continued since then. There has been no 0.3° C rise, and all the years since then have been cooler than 1998.

I asked the previous Government in 2006 how long the pause would have to continue before the Met Office amended its model to take the reality into account. They sent people from the Met Office to come and see me in my office, and we had an interesting discussion. However, the answer was—this answer is also in Hansard—that they would not alter the model, because the model is right. If the facts are rebutted then, in the words of Hegel, so much the worse for the facts. That has been people’s attitude about it all. It is not science, because it is not refutable.

That does not mean to say that the greenhouse effect does not exist; I am a physicist by training, and of course it exists. The question is: how big is it? If it is of a modest size and it has been offset over the past 15 years by natural variations, is it not possible that in the previous 20 years, when there was a rise in temperature, some of that was due to the opposite movement in natural factors, adding to and amplifying any minor global warming due to CO₂?

[Mr Redwood]

Does my right hon. Friend agree with the point that I was trying to make earlier to the hon. Member for Brent North (Barry Gardiner), who seemed to be unwilling to consider it? If one wishes to establish the impact of human CO₂, one needs to understand all the other factors driving climate change, which might be up or down, and be able to quantify them. Otherwise, one cannot calculate the human effect.

[Mr Lilley]

Absolutely. When people say that there is a scientific consensus that all or the majority of heating that has occurred over the recent decades is due to man-made emissions, there is in fact no such consensus. If one drills down into the questions people ask, one will see that the questions in the first study included, “Do you believe that man-made emissions contribute to warming?” Yes, I do. “Do you believe that that is largely due to CO₂?” Yes, I do. However, that does not make me an alarmist, and it does not justify anyone else pretending that every scientist is an alarmist—they are not.

The Act is not just the most expensive, impractically ambitious and uncertainly based piece of legislation that I have ever known; it is unique in being legally binding and unilateral. No other country has followed us down that route. Since we went down that route, Canada and Japan have resiled from Kyoto, and Australia has just abandoned its carbon tax. It is time we looked critically at the Act, repealed or revised it, and do not allow ourselves to be slavishly, legally bound to continue doing something that no longer accords with the evidence or goes along with what the rest of the world is doing.