Boris Johnson's climate change "scepticism" is an embarrassment to London's scientists

The Mayor's suggestion that we are heading for a "mini Ice Age"shows that he does not understand the basic science behind global warming.

Boris Johnson has become a real embarrassment to London's scientific community after his latest outburst of climate change ‘scepticism’, which exposes not just a glaring weakness in his own knowledge but also within his team of advisers.

On Monday, Johnson used his Telegraph column to muse on the global climatic implications of a few days of wintry weather in the UK in January. He concluded that it might be time for policy-makers to consider whether the earth is heading for a "mini Ice Age".

This is complete rubbish, of course, and shows not only that Johnson does not understand the basic science behind global warming but also that he cannot distinguish between anecdote and evidence, or between weather and climate.

Claiming to be "an empiricist", Johnson suggested that this is "the fifth year in a row that we have had an unusual amount of snow" and that "I don’t remember winters like this". Unfortunately, his commitment to observational analysis apparently does not extend to consulting the Met Office’s records, which would have shown him that although the average temperatures in the UK during winters 2008-09, 2009-10 and 2010-11 were below average, last winter was actually warmer than average, as were most winters since 2000.

Furthermore, he would have discovered that the UK’s climate bears the unmistakeable footprint of global warming, with the seven warmest years on record all occurring since 2000. So why does the Mayor claim we are experiencing global cooling?

Well, it seems that the only person Johnson consults on this issue is his friend Piers Corbyn, who rejects the overwhelming evidence that rising atmospheric levels of greenhouse gases is driving the unambiguous rise in global average temperatures, and instead holds the sun directly responsible for trends in the Earth’s climate.

The trouble with Dr Corbyn’s theory, which he has not published in any peer-reviewed scientific journal, is that it is not supported by evidence. He does not even believe that the earth’s climate is controlled by the amount of energy radiated from the sun, but instead blames its magnetic activity, which increases and decreases cyclically about every 11 years and so clearly cannot be the main driver of global warming.

Johnson’s description of Dr Corbyn’s theory is an almost verbatim reproduction from one of his earlier columns last July (clearly the £250,000 he is allegedly paid each year is not high enough to guarantee original content for its readers), and is punctuated with references to JMW Turner, Shakespeare and the Aztecs, but largely devoid of scientific insight.

This latest gaffe follows his decision last year to invite Matt Ridley, a prominent climate change ‘sceptic’ and former chairman of Northern Rock, to speak at City Hall about how environmental risks are overblown, as part of the cultural celebration that accompanied the Olympics.

Perhaps we should not be surprised by all this given the complete lack of scientific education that Johnson has received. However, the Mayor has to take scientific evidence and expert knowledge into account when making many important decisions, not the least of which is how to adapt the capital’s transport system and infrastructure to withstand the impacts of global warming. He should not be relying on the fanciful theories of friends when it comes to issues that affect the lives and livelihoods of Londoners.

Johnson should make better use of the fact that the capital is home to many world class universities and scientific societies where he could consult genuine experts, most of whom now cringe every time he holds forth about climate change. But it is also time that the Mayor of London followed the example of central government departments by adding a professional and credible chief scientific adviser to his team.

Mayor of London Boris Johnson gestures as he addresses students at The Indian School of Business (ISB) campus in Hyderabad on November 28, 2012. Photograph: Getty Images.

Bob Ward is policy and communications director of the Grantham Research Institute on Climate Change and the Environment at London School of Economics and Political Science.

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Will anyone sing for the Brexiters?

The five acts booked to perform at pro-Brexit music festival Bpoplive are down to one.

Do Brexiters like music too? If the lineup of Bpoplive (or more accurately: “Brexit Live presents: Bpop Live”) is anything to go by, the answer is no. Ok, former lineup.

The anti-Europe rally-cum-music festival has already been postponed once, after the drum and bass duo Sigma cancelled saying they “weren’t told Bpoplive was a political event”.

But then earlier this week the party was back on, set for Sunday 19th June, 4 days before the referendum, and a week before Glastonbury, saving music lovers a difficult dilemma. The new lineup had just 5 acts: the 90s boybands East17 and 5ive, Alesha Dixon of Britain’s Got Talent and Strictly Come Dancing fame, family act Sister Sledge and Gwen Dickey of Rose Royce.

Unfortunately for those who have already shelled out £23 for a ticket, that 5 is now down to 1. First to pull out were 5ive, who told the Mirror that “as a band [they] have no political allegiances or opinions for either side.” Instead, they said, their “allegiance is first and foremost to their fans”. All 4our of them.

Next to drop was Alesha Dixon, whose spokesperson said that that she decided to withdraw when it became clear that the event was to be “more of a political rally with entertainment included” than “a multi-artist pop concert in a fantastic venue in the heart of the UK”. Some reports suggested she was wary of sharing a platform with Nigel Farage, though she has no qualms about sitting behind a big desk with Simon Cowell

A spokesperson for Sister Sledge then told Political Scrapbook that they had left the Brexit family too, swiftly followed by East 17 who decided not to stay another day.

So, it’s down to Gwen Dickey.

Dickey seems as yet disinclined to exit the Brexit stage, telling the Mirror: "I am not allowed to get into political matters in this lovely country and vote. It is not allowed as a American citizen living here. I have enough going on in my head and heart regarding matters in my own country at this time. Who will be the next President of the USA is of greater concern to me and for you?"

With the event in flux, it doesn’t look like the tickets are selling quickly.

In February, as David Cameron’s EU renegotiation floundered, the Daily Mail ran a front-page editorial asking “Who will speak for England?” Watch out for tomorrow’s update: “Who will sing for the Brexiters?”

I'm a mole, innit.