Scientists must rein in misleading climate change claims
I missed this in Wednesday’s Guardian. I picked it up because a recent “hawt post” on Word Press from someone who is a climate change denier has leaped on this story as evidence that the Met Office – and the Guardian – have changed their minds – which is not all the case either.
There have been recent dramatic weather events which some have used to advance the argument that climate change is progressing much faster than predicted. Dr Vicky Pope is the head of climate change advice at the Met Office Hadley Centre – and she is writing in the “Comment is Free” section. That means she is not speaking on behalf of the Met Office – although obviously given her position her opinion has considerable weight. Nor is the opinion necessarily endorsed by the Guardian – they make their opinion area very open indeed.
scientific evidence has been selectively chosen to support a cause. In the 1990s, global temperatures increased more quickly than in earlier decades, leading to claims that global warming had accelerated. In the past 10 years the temperature rise has slowed, leading to opposing claims. Again, neither claim is true, since natural variations always occur on this timescale.
That is not a “blistering attack” – it is a careful analysis of data to disprove both positions – exaggeration and denial.
But also note this final paragraph
When climate scientists like me explain to people what we do for a living we are increasingly asked whether we “believe in climate change”. Quite simply it is not a matter of belief. Our concerns about climate change arise from the scientific evidence that humanity’s activities are leading to changes in our climate. The scientific evidence is overwhelming.
So absolutely no comfort for the deniers there either.
I am not a climate scientist and make no claim to be. I do try to keep up – and one thing I do note is that more extreme weather events of all kinds are part and parcel of global warming. Put simply, there is now more energy in the weather systems – so they are more severe than they used to be. So increased snow in Vancouver and London – more forest fires in Australia – are all consistent with global warming.
Dr Pope is concerned about demagogues on both sides selectively taking data that seem to support their case that either climate change is not happening at all (obviously untrue) or happening much faster than previously thought (which might well be true but could be a premature alarm).
I think civil servants are selected and promoted on their understanding of what it means not to alarm and confuse the population at large. I think she has a point. I also think that policies to deal with climate change to date everywhere have been far too little and too late and are clearly having no measurable effect. And we still need to change direction. The sooner we do that and the more effective the action the better. Once again the precautionary principle kicks in and it seems unlikely that we will risk doing “too much”. There has been far too much caution up to date – and not so much because people thought that the planet was not warming but they were distracted by financial and economic concerns – that in the great scheme of things may well turn out to have been irrelevant.
As a resident of a low lying area I do not think it will be a bad thing if we spend a lot on dyke raising now. It may not be needed for a while, but I will sleep easier in the mean time. It is the same argument I have used to promote the need to earthquake proof our schools. We do not know when the big one is coming – but it will. Nor do we know how big it will be exactly. But we do know that far too many school buildings are not capable of withstanding a significant quake. Putting off the need to upgrade them due to budgetary concerns seems to me to be the height of foolishness.
Equally we need to transform our society from a car dependent sprawl to a compact, efficient and sustainable pattern. We must cut energy use – and switch to sustainable energy sources. This imperative is not affected one whit by esoteric scientific debates about the rate of climate change. We need to do that even if the arctic ice pack does not melt entirely in the next ten – or fifty – years.