Energy Bill [HL]

Debate between Lord Winston and Viscount Ridley

Wednesday 9th September 2015 Lords Chamber

[Viscount Ridley]

On the first point about the lag, yes, but the whole point is that I am comparing the rate of temperature increase with the rate predicted by the IPCC, which knew about the lag and built it into its models. Essentially, the noble Baroness is talking about the difference between equilibrium climate sensitivity, which is reached after many centuries, and transient climate response, which is what you immediately get. Yes, there is a big difference there, but the climate sensitivity figures—I was coming on to this—are based on 14 new studies, one of which Myles Allen co-authored.

[Lord Winston (Lab)]

Forgive me, but is not this discussion a little irrelevant to the amendment? What we are trying to do in this Bill is to create a plan, and in considering this amendment that is what we should be focusing on, rather than the arguments about climate change.

[Viscount Ridley]

I do not disagree—I was simply picking up on a couple of points made by the noble Baroness, Lady Worthington, and the noble Lord, Lord Oxburgh. I will wrap up my remarks very soon, but let me point out that the only scenario that the IPCC considered in its models that gets us to 4 degrees by 2100 is RCP 8.5, which assumes that the world will be burning 10 times as much coal in 2100 as we are today. That is not very realistic, and it also assumes that by then, we will be getting our motor fuel from coal. Nobody thinks that is going to happen, so one has to be careful about which of the IPCC scenarios one looks at. That one is not very plausible.

Anyway, I think we agree that this is an excellent amendment, and I will leave it at that.