Has global warming really stopped?

Mark Lynas responds to a controversial article on newstatesman.com which argued global warming has s

On 19 December the New Statesman website published an article which, judging by the 633 comments (and counting) received so far, must go down in history as possibly the most controversial ever. Not surprising really – it covered one of the most talked-about issues of our time: climate change. Penned by science writer David Whitehouse, it was guaranteed to get a big response: the article claimed that global warming has ‘stopped’.

As the New Statesman’s environmental correspondent, I have since been deluged with queries asking if this represents a change of heart by the magazine, which has to date published many editorials steadfastly supporting urgent action to reduce carbon emissions. Why bother doing that if global warming has ‘stopped’, and therefore might have little or nothing to do with greenhouse gas emissions, which are clearly rising?

I’ll deal with this editorial question later. First let’s ask whether Whitehouse is wholly or partially correct in his analysis. To quote:

"The fact is that the global temperature of 2007 is statistically the same as 2006 as well as every year since 2001. Global warming has, temporarily or permanently, ceased. Temperatures across the world are not increasing as they should according to the fundamental theory behind global warming – the greenhouse effect. Something else is happening and it is vital that we find out what or else we may spend hundreds of billions of pounds needlessly."

I’ll be blunt. Whitehouse got it wrong – completely wrong. The article is based on a very elementary error: a confusion between year-on-year variability and the long-term average. Although CO2 levels in the atmosphere are increasing each year, no-one ever argued that temperatures would do likewise. Why? Because the planet’s atmosphere is a chaotic system, which expresses a great deal of interannual variability due to the interplay of many complex and interconnected variables. Some years are warmer and cooler than others. 1998, for example, was a very warm year because an El Nino event in the Pacific released a lot of heat from the ocean. 2001, by contrast, was somewhat cooler, though still a long way above the long-term average. 1992 was particularly cool, because of the eruption of a large volcano in the Philippines called Mount Pinatubo.

‘Climate’ is defined by averaging out all this variability over a longer term period. So you won’t, by definition, see climate change from one year to the next - or even necessarily from one decade to the next. But look at the change in the average over the long term, and the trend is undeniable: the planet is getting hotter.

Look at the graph below, showing global temperatures over the last 25 years. These are NASA figures, using a global-mean temperature dataset known as GISSTEMP. (Other datasets are available, for example from the UK Met Office. These fluctuate slightly due to varying assumptions and methodology, but show nearly identical trends.) Now imagine you were setting out to write Whitehouse’s article at some point in the past. You could plausibly have written that global warming had ‘stopped’ between 1983 and 1985, between 1990 and 1995, and, if you take the anomalously warm 1998 as the base year, between 1998 and 2004. Note, however, the general direction of the red line over this quarter-century period. Average it out and the trend is clear: up.

Note also the blue lines, scattered like matchsticks across the graph. These, helpfully added by the scientists at RealClimate.org (from where this graph is copied), partly in response to the Whitehouse article, show 8-year trend lines – what the temperature trend is for every 8-year period covered in the graph.

You’ll notice that some of the lines, particularly in the earlier part of the period, point downwards. These are the periods when global warming ‘stopped’ for a whole 8 years (on average), in the flawed Whitehouse definition – although, as astute readers will have quickly spotted, the crucial thing is what year you start with. Start with a relatively warm year, and the average of the succeeding eight might trend downwards. In scientific parlance, this is called ‘cherry picking’, and explains how Whitehouse can assert that "since [1998] the global temperature has been flat" – although he is even wrong on this point of fact, because as the graph above shows, 2005 was warmer.

Note also how none of the 8-year trend lines point downwards in the last decade or so. This illustrates clearly how, far from having ‘stopped’, global warming has actually accelerated in more recent times. Hence the announcement by the World Meteorological Organisation on 13 December, as the Bali climate change meeting was underway, that the decade of 1998-2007 was the “warmest on record”. Whitehouse, and his fellow contrarians, are going to have to do a lot better than this if they want to disprove (or even dispute) the accepted theory of greenhouse warming.

The New Statesman’s position on climate change

Every qualified scientific body in the world, from the American Association for the Advancement of Science to the Royal Society, agrees unequivocally that global warming is both a reality, and caused by man-made greenhouse gas emissions. But this doesn’t make them right, of course. Science, in the best Popperian definition, is only tentatively correct, until someone comes along who can disprove the prevailing theory. This leads to a frequent source of confusion, one which is repeated in the Whitehouse article – that because we don’t know everything, therefore we know nothing, and therefore we should do nothing. Using that logic we would close down every hospital in the land. Yes, every scientific fact is falsifiable – but that doesn’t make it wrong. On the contrary, the fact that it can be challenged (and hasn’t been successfully) is what makes it right.

Bearing all this in mind, what should a magazine like the New Statesman do in its coverage of the climate change issue? Newspapers and magazines have a difficult job of trying, often with limited time and information, to sort out truth from fiction on a daily basis, and communicating this to the public – quite an awesome responsibility when you think about it. Sometimes even a viewpoint which is highly likely to be wrong gets published anyway, because it sparks a lively debate and is therefore interesting. A publication that kept to a monotonous party line on all of the day’s most controversial issues would be very boring indeed.

However, readers of my column will know that I give contrarians, or sceptics, or deniers (call them what you will) short shrift, and as a close follower of the scientific debate on this subject I can state without doubt that there is no dispute whatsoever within the expert community as to the reality or causes of manmade global warming. But even then, just because all the experts agree doesn’t make them right – it just makes them extremely unlikely to be wrong. That in turn means that if someone begs to disagree, they need to have some very strong grounds for doing so – not misreading a basic graph or advancing silly conspiracy theories about IPCC scientists receiving paycheques from the New World Order, as some of Whitehouse’s respondents do.

So, a mistaken article reached a flawed conclusion. Intentionally or not, readers were misled, and the good name of the New Statesman has been used all over the internet by climate contrarians seeking to support their entrenched positions. This is regrettable. Good journalism should never exclude legitimate voices from a debate of public interest, but it also needs to distinguish between carefully-checked fact and distorted misrepresentations in complex and divisive areas like this. The magazine’s editorial policy is unchanged: we want to see aggressive action to reduce carbon emissions, and support global calls for planetary temperatures to be stabilised at under two degrees above pre-industrial levels.

Yes, scientific uncertainties remain in every area of the debate. But consider how high the stakes are here. If the 99% of experts who support the mainstream position are right, then we have to take urgent action to reduce emissions or face some pretty catastrophic consequences. If the 99% are wrong, and the 1% right, we will be making some unnecessary efforts to shift away from fossil fuels, which in any case have lots of other drawbacks and will soon run out. I’d hate to offend anyone here, but that’s what I’d call a no-brainer.

Mark Lynas has is an environmental activist and a climate change specialist. His books on the subject include High Tide: News from a warming world and Six Degree: Our future on a hotter planet.
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View from Paisley: How the Conservatives are wooing Labour's Scottish heartlands

Not so long ago, Conservative activists in Paisley could expect doors slammed in their faces. A referendum has changed that.

Tony Lawler, a Labour activist, was recently knocking on doors in the Scottish town of Paisley, when he came across a disgruntled resident. “I’m really disappointed in Douglas Alexander,” the potential voter complained. “I haven’t seen him. He used to be in Morrisons.”

Douglas Alexander, of course, has gone. He was the longstanding Labour MP and onetime International Development secretary who lost his seat in 2015 to a 20-year-old rival, the Scottish National Party’s Mhairi Black. He does not plan to stand again. But when I visit Paisley, a short train ride from Glasgow, I find that memories of him linger on. 

Two years after Alexander’s defeat, I meet Lawler and other local Labour activists in Morrisons, where Alexander used to hold his surgeries. As checkouts beep and trolley wheels roll over linoleum, they point to an empty table in the corner of this hallowed ground: “He used to sit just there.”

In 2015, the SNP’s victory in this former manufacturing town seemed to epitomise the earthquake in Scottish politics. But as the Labour activists know too well, no political fortress is undefeatable. And in Paisley, the home of one of the oldest workers’ festivals in the world, the party with the most to gain is one that previously never dared to canvass in the high street – the Conservative party. 

The town the Brexiteers forgot

In 1988, the historian Sylvia Clarke reflected on Paisley’s lost industries, wondering what was next for the former weaving towns. “Paisley as a tourist centre?” she wondered, in Paisley: A History. “Paisley as a place for visitors to come to, rather than a send-out of goods and emigrants?” 

For all Paisley’s industrial decline, it’s a pretty place. The town is in the running for the 2021 City of Culture, and has the second biggest number of listed buildings after Edinburgh. When I visit in the middle of April, blossom floats on the trees, and a river meanders through a neighbourhood of old, stone houses. It takes a moment to notice weeds tightening their grasp on the window frames. When I try the door of the ancient Paisley Abbey, it’s locked.

Perhaps if Paisley had been located the other side of the border, in Sunderland or Northumbria, it would be voting Leave and flirting with Ukip. But in the most deprived areas here, Labour activists tell me the EU referendum tally was still almost 50-50, and overall the town voted Remain.

There is a view that Brexit is an English concern. “We haven’t picked up anything about the EU referendum,” says Lawler of his doorstep conversations. “What people are talking about is the independence referendum, Jeremy Corbyn and the kids’ ward.” Scotland’s health secretary, Shona Robison, is due to make a decision on whether the specialist ward should be moved to a large hospital in the First Minister’s Glasgow constituency, against the wishes of many Paisley residents. The hospital in question is nicknamed “the Death Star”.  

Another concern, reminiscent of small towns across the UK, is the decline of the high street. When I walk down the historical shopping area Causeyside Street, I find mother and daughter Kate and Linda Hancy packing up what remains of The Pattern Café and Gift Shop. The wallpaper is a glorious Paisley print, but the scented candles are in boxes and a spray soap bottle hangs from a chair. After two years of trying, they are closing down.  

“People just don’t have money to spend,” Kate says. “A lot of people have been on the same wage for more than five years.”

Linda chimes in: “The cost of living going up but wages aren’t the same. I work in a supermarket, and people come in and say ‘How did I spend this much money?’ A lot of people are paying by credit cards.”

The Hancys voted to remain in the UK, and the EU. Although they knew Alexander, they have never met Mhairi Black, and feel devolution, if anything, has made politicians less accountable. “Why are we picking 1,2,3,4,” demands Kate, referring to Holyrood's voting system, which rejected first past the post. “Why can’t we pick one like we used to?”

Without the EU to blame, the most obvious culprits for Paisley town centre’s decline are the out-of-town shopping centres, where cinemas are opening just as historical ones in town close their doors.

Gavin Simpson, owner of Feel the Groove, a new record shop, remembers the 1980s, when a new release would have shoppers queuing round the block. However, he believes the town is over the worst. (As we speak, a customer comes in to reserve such a record and cheerfully warns Gavin that “even if I ask for my money back, don’t give it to me.”)

One thriving business is the longstanding butchers, Wm Phelps. Manager James Peacock tells me it is down to the trustworthy Scottish produce, which is carefully tracked and labelled. But the business has also embraced globalisation.  After noticing a large number of South African customers, Peacock began selling boerewors and biltong.

The other referendum campaign

If Paisley has been spared the divisions of the EU referendum campaign, its “buddies” – as residents are known – are still reeling with the repercussions of an earlier referendum, that on Scotland in the UK. In 2014, the town voted for independence, although the county overall opted to stay in the UK. 

The town is home to a particularly brash strain of indyreffers, including the “Smith Commission burners”, three SNP councillors who gathered in front of the council headquarters to burn a copy of the report setting out new powers for Scotland. One of them, Mags MacLaren, went on to manage Black’s constituency office.

But if the Paisley independence movement has been well covered, less is known about its opposite - the rise of pro-unionism. 

Of the three mainstream parties opposed to independence, it is the Scottish Conservatives, with their unconventional leader Ruth Davidson, who have most effectively capitalised on the pro-union message. In the 2016 Scottish Parliament elections, the Tory Jackson Carlaw captured the West of Scotland constituency of Eastwood, which had been held by Labour since its creation. 

In Holyrood, the Scottish Tories benefit from proportional representation, which allows voters to choose a constituency MSP but also rank parties. 

According to Paul Masterton, the Tory candidate for East Renfrewshire, and the secretary of the Renfrewshire and Inverclyde Scottish Conservative Association, the Conservatives are now getting huge numbers of first preference votes, including in neighbourhoods like the suburb of Ralston, where both Black and Masterton are from. So who are these voters? Masterton describes them as “New Labour voters who were happy with Tony Blair and Gordon Brown but didn’t like Jeremy Corbyn and get tied up into knots by [Scottish Labour leader] Kezia Dugdale flipflopping on the union stance".

The 2016 election saw the Scottish Conservatives surge to second place in Scotland – a superb comeback for a party once ridiculed as being rarer than pandas. The next electoral test is the local council elections. In Paisley, even Labour activists acknowledged the Conservatives were likely to be the most notable winners.

“For a long time we simply didn’t go out in Paisley," says Masterton. "We were written off and we allowed ourselves to be written off.”

But the referendum has changed this. “What I found was that last May, people weren’t shutting the door in your face," he adds. "Once you started the conversation they were far more receptive to that.” 

Like the Labour activists, Masterton argues that the constitutional question matters more than Brexit. “When Theresa May said ‘now is not the time’, I think a lot of people across Paisley did a small quiet fist pump,” he says of a second independence referendum.  

Ironically, after the early election is called, the Scottish Conservatives do everything they can to mention the prospect. “Don't mention the 'i' word,” crows a recent press release about the “SNP indyref ban”. Davidson tweets: “Nicola doesn't want to stand on her record. She knows the country doesn't want her #indyref2.” A Panelbase survey commissioned by The Sunday Times Scotland published shortly after the early election was announced finds support for the Conservatives at Scotland at 33 per cent, 18 percentage points higher than in 2015. 

What you stand for

For now, Paisley remains a Scottish National Party stronghold. George Adams, the MSP with an office off the high street, proves elusive – Labour activists confirm his reputation as a hardworking local. Black’s aide turns down my request for an interview for similar reasons, but I bump into her that evening at a protest against cutting child tax credits in Glasgow’s George Square.

Black, an admirer of the left-wing Labour figure Tony Benn, once said she feels "it is the Labour party that left me". I ask her if she, like her Labour predecessor, holds surgeries in supermarkets. Black says she’d considered it, but given the sensitivity of some of the issues, such as benefit problems, she thought her constituents might appreciate a more private space. “The main thing that crosses the door in my offices is Universal Credit changes,” she explains. She says she has raised her concerns about the children’s ward.

As for the independence debate, she argues that the Scottish government have been “incredibly compromising” since Brexit, but adds: “A lot of folk want another chance at the question.”

Black is standing for re-election. With a majority of more than 5,000, and neither of her previous challengers in the running, she’s likely to keep her seat, even if buddies' discontent over local issues rumbles on. 

Still, as I have discovered, the 2014 referendum continues to reverberate in towns like Paisley. It has divided friends and neighbours on constitutional lines, galvanised new strains of politics, and brought a Labour heavyweight crashing down, with no appetite to return. 

The Tories believe their unionist message is enough to flip seats like East Renfrewshire, once Conservative, then Labour, and now an SNP marginal. As the SNP's shine wears off, could Paisley, with its long tradition of the left, one day follow? It no longer feels implausible. “The one thing about the Scottish Conservatives - and this is true whatever you like us or not,” says Masterton. “You know what we stand for.”

 

Julia Rampen is the digital news editor of the New Statesman (previously editor of The Staggers, The New Statesman's online rolling politics blog). She has also been deputy editor at Mirror Money Online and has worked as a financial journalist for several trade magazines. 

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