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.
MARTIN O’NEILL
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The new young fogeys

Today’s teens and twentysomethings seem reluctant to get drunk, smoke cigarettes or have sex. Is abstinence the new form of youth rebellion?

In a University College London lecture theatre, all eyes are on an elaborate Dutch apple cake. Those at the back have stood up to get a better look. This, a chorus of oohs and aahs informs me, is a baked good at its most thrilling.

In case you were wondering, UCL hasn’t rented out a room to the Women’s Institute. All thirty or so cake enthusiasts here are undergraduates, aged between 18 and 21. At the third meeting this academic year of UCL’s baking society, the focus has shifted to a Tupperware container full of peanut butter cookies. One by one, the students are delivering a brief spiel about what they have baked and why.

Sarah, a 19-year-old human sciences undergraduate, and Georgina, aged 20, who is studying maths and physics, help run the baking society. They tell me that the group, which was set up in 2012, is more popular than ever. At the most recent freshers’ fair, more than 750 students signed up. To put the number in perspective: that is roughly 15 per cent of the entire first-year population. The society’s events range from Great British Bake Off-inspired challenges to “bring your own cake” gatherings, such as today’s. A “cake crawl”, I am told, is in the pipeline. You know, like a pub crawl . . . but with cake? Georgina says that this is the first year the students’ union has advertised specifically non-drinking events.

From the cupcake boom to the chart-topping eminence of the bow-tie-wearing, banjo-plucking bores Mumford & Sons, the past decade of youth culture has been permeated by wholesomeness. According to the Office for National Statistics (ONS), this movement is more than just aesthetic. Not only are teenage pregnancies at their lowest level since records began in the 1960s, but drug-taking, binge drinking and sexually transmitted infections among young people have also taken significant dives. Drug use among the under-25s has fallen by a quarter over the past ten years and heavy drinking – measured by how much a person drinks in an average week – is down by 15 per cent. Cigarettes are also losing their appeal, with under-25 smokers down by 10 per cent since 2001. Idealistic baby boomers had weed and acid. Disaffected and hedonistic Generation X-ers had Ecstasy and cocaine. Today’s youth (which straddles Generations Y and Z) have cake. So, what shaped this demographic that, fairly or otherwise, could be called “Generation Zzzz”?

“We’re a lot more cynical than other generations,” says Lucy, a 21-year-old pharmacy student who bakes a mean Welsh cake. “We were told that if we went to a good uni and got a good job, we’d be fine. But now we’re all so scared we’re going to be worse off than our parents that we’re thinking, ‘Is that how we should be spending our time?’”

“That” is binge drinking. Fittingly, Lucy’s dad – she tells me – was an anarchist with a Mohawk who, back home in the Welsh valleys, was known to the police. She talks with deserved pride about how he joined the Conservative Party just to make trouble and sip champagne courtesy of his enemies. Lucy, though decidedly Mohawk-free, is just as politically aware as her father. She is concerned that she will soon graduate into a “real world” that is particularly hard on women.

“Women used to be a lot more reliant on men,” she says, “but it’s all on our shoulders now. One wage isn’t enough to support a family any more. Even two wages struggle.”

***

It seems no coincidence that the downturn in drink and drugs has happened at the same time as the worst financial crisis since the Great Depression. Could growing anxiety about the future, combined with a dip in disposable income, be taming the under-25s?

“I don’t know many people who choose drugs and alcohol over work,” says Tristan, a second-year natural scientist. He is one of about three men at the meeting and it is clear that even though baking has transcended age it has yet to transcend gender to the same extent. He is softly spoken and it is hard to hear him above a room full of sugar-addled youths. “I’ve been out once, maybe, in the past month,” he says.

“I actually thought binge drinking was quite a big deal for our generation,” says Tegan, a 19-year-old first-year linguistics undergraduate, “but personally I’m not into that. I’ve only been here three weeks and I can barely keep up with the workload.”

Tegan may consider her drinking habits unusual for someone her age but statistically they aren’t. Over a quarter of the under-25s are teetotal. Neither Tegan nor Lucy is dull. They are smart, witty and engaging. They are also enthusiastic and seemingly quite focused on work. It is this “get involved” attitude, perhaps, that distinguishes their generation from others.

In Absolutely Fabulous, one of the most popular British sitcoms of the 1990s, a lot of the humour stems from the relationship between the shallow and fashion-obsessed PR agent Edina Monsoon and her shockingly straitlaced teenage daughter, Saffie. Although Saffie belongs to Generation X, she is its antithesis: she is hard-working, moral, politically engaged, anti-drugs and prudishly anti-sex. By the standards of the 1990s, she is a hilarious anomaly. Had Ab Fab been written in the past couple of years, her character perhaps would have been considered too normal. Even her nerdy round glasses and frumpy knitted sweaters would have been considered pretty fashionable by today’s geek-chic standards.

Back in the UCL lecture theatre, four young women are “geeking out”. Between mouthfuls of cake, they are discussing, with palpable excitement, a Harry Potter-themed summer camp in Italy. “They play Quidditch and everything – there’s even a Sorting Hat,” says the tall, blonde student who is leading the conversation.

“This is for children, right?” I butt in.

“No!” she says. “The minimum age is actually 15.”

A kids’ book about wizards isn’t the only unlikely source of entertainment for this group of undergraduates. The consensus among all the students I speak to is that baking has become so popular with their demographic because of The Great British Bake Off. Who knew that Mary Berry’s chintzy cardigans and Sue Perkins’s endless puns were so appealing to the young?

Are the social and economic strains on young people today driving them towards escapism at its most gentle? Animal onesies, adult ball pools (one opened in west London last year) and that much-derided cereal café in Shoreditch, in the East End, all seem to make up a gigantic soft-play area for a generation immobilised by anxiety.

Emma, a 24-year-old graduate with whom I chatted on email, agrees. “It feels like everyone is more stressed and nervous,” she says. “It seems a particularly telling sign of the times that adult colouring-in books and little, cutesy books on mindfulness are such a massive thing right now. There are rows upon rows of bookshelves dedicated solely to all that . . . stuff.” Emma would know – she works for Waterstones.

From adult colouring books to knitting (UCL also has a knitting society, as do Bristol, Durham, Manchester and many more universities), it is hard to tell whether the tsunami of tweeness that has engulfed middle-class youth culture in the past few years is a symptom or a cause of the shrinking interest in drugs, alcohol, smoking and other “risk-taking” behaviours.

***

Christine Griffin is Professor of Social Psychology at Bath University. For the past ten years, she has been involved in research projects on alcohol consumption among 18-to-25-year-olds. She cites the recession as a possible cause of alcohol’s declining appeal, but notes that it is only part of the story. “There seems to be some sort of polarisation going on,” Griffin says. “Some young people are actually drinking more, while others are drinking less or abstaining.

“There are several different things going on but it’s clear that the culture of 18-to-25-year-olds going out to get really drunk hasn’t gone away. That’s still a pervasive social norm, even if more young people are drinking less or abstaining.”

Griffin suggests that while frequent, sustained drinking among young people is in decline, binge drinking is still happening – in short bursts.

“There are still a lot of people going to music festivals, where a huge amount of drinking and drug use goes on in a fairly unregulated way,” she says. It is possible that music festivals and holidays abroad (of the kind depicted in Channel 4 programmes such as What Happens in Kavos, in which British teenagers leave Greek islands drenched in booze and other bodily fluids) are seen as opportunities to make a complete escape from everyday life. An entire year’s worth of drinking, drug-taking and sex can be condensed into a week, or even a weekend, before young people return to a life centred around hard work.

Richard De Visser, a reader in psychology at Sussex University, also lists the economy as a possible cause for the supposed tameness of the under-25s. Like Griffin, however, he believes that the development is too complex to be pinned purely on a lack of disposable income. Both Griffin and De Visser mention that, as Britain has become more ethnically diverse, people who do not drink for religious or cultural reasons – Muslims, for instance – have become more visible. This visibility, De Visser suggests, is breaking down taboos and allowing non-mainstream behaviours, such as not drinking, to become more socially accepted.

“There’s just more variety,” he says. “My eldest son, who’s about to turn 14, has conversations – about sexuality, for example – that I never would’ve had at his age. I think there’s more awareness of alcohol-related problems and addiction, too.”

De Visser also mentions the importance of self-image and reputation to many of the young non-drinkers to whom he has spoken. These factors, he argues, are likely to be more important to people than the long-term effects of heavy drinking. “One girl I interviewed said she wouldn’t want to meet the drunk version of herself.”

Jess, a self-described “granny”, is similarly wary of alcohol. The 20-year-old Liverpudlian, who works in marketing, makes a bold claim for someone her age. “I’ve never really been drunk,” she says. “I’ve just never really been bothered with alcohol or drugs.” Ironically, someone of her generation, according to ONS statistics, is far more likely to be teetotal than a real granny at any point in her life. Jess says she enjoys socialising but her nights out with close friends are rather tame – more likely to involve dinner and one quick drink than several tequila shots and a traffic cone.

It is possible, she suggests, that her lack of interest in binge drinking, or even getting a little tipsy, has something to do with her work ethic. “There’s a lot more competition now,” she says. “I don’t have a degree and I’m conscious of the need to be on top of my game to compete with people who do. There’s a shortage of jobs even for people who do have degrees.”

Furthermore, Jess says that many of her interactions with friends involve social media. One theory put forward to explain Generation Zzzz is that pubs are losing business to Facebook and Twitter as more and more socialising happens online. Why tell someone in person that you “like” their baby, or cat, or new job (probably over an expensive pint), when you can do so from your sofa, at the click of a button?

Hannah, aged 22, isn’t so sure. She recently started her own social media and communications business and believes that money, or the lack of it, is why her peers are staying in. “Going out is so expensive,” she says, “especially at university. You can’t spend out on alcohol, then expect to pay rent and fees.” Like Jess (and as you would probably expect of a 22-year-old who runs a business), Hannah has a strong work ethic. She also has no particular interest in getting wasted. “I’ve always wanted my own business, so for me everything else was just a distraction,” she says. “Our generation is aware it’s going to be a bit harder for us, and if you want to support yourself you have to work for it.” She also suggests that, these days, people around her age have more entrepreneurial role models.

I wonder if Hannah, as a young businesswoman, has been inspired by the nascent strand of free-market, “lean in” feminism. Although the women’s movement used to align itself more with socialism (and still does, from time to time), it is possible that a 21st-century wave of disciples of Sheryl Sandberg, Facebook’s chief operating officer, is forswearing booze, drugs and any remote risk of getting pregnant, in order to get ahead in business.

But more about sex. Do the apparently lower rates of sexually transmitted infections and teenage pregnancies suggest that young people are having less of it? In the age of Tinder, when hooking up with a stranger can be as easy as ordering a pizza, this seems unlikely. Joe Head is a youth worker who has been advising 12-to-21-year-olds in the Leighton Buzzard area of Bedfordshire on sexual health (among other things) for 15 years. Within this period, Head says, the government has put substantial resources into tackling drug use and teen pregnancy. Much of this is the result of the Blair government’s Every Child Matters (ECM) initiative of 2003, which was directed at improving the health and well-being of children and young adults.

“ECM gave social services a clearer framework to access funds for specific work around sexual health and safety,” he says. “It also became a lot easier to access immediate information on drugs, alcohol and sexual health via the internet.”

***

Head also mentions government-funded education services such as Frank – the cleverly branded “down with the kids” anti-drugs programme responsible for those “Talk to Frank” television adverts. (Remember the one showing bags of cocaine being removed from a dead dog and voiced by David Mitchell?)

But Head believes that the ways in which some statistics are gathered may account for the apparent drop in STIs. He refers to a particular campaign from about five years ago in which young people were asked to take a test for chlamydia, whether they were sexually active or not. “A lot of young people I worked with said they did multiple chlamydia tests throughout the month,” he says. The implication is that various agencies were competing for the best results in order to prove that their education programmes had been effective.

However, regardless of whether govern­ment agencies have been gaming the STI statistics, sex education has improved significantly over the past decade. Luke, a 22-year-old hospital worker (and self-described “boring bastard”), says that sex education at school played a “massive part” in his safety-conscious attitude. “My mother was always very open [about sex], as was my father,” he says. “I remember talking to my dad at 16 about my first serious girlfriend – I had already had sex with her by this point – and him giving me the advice, ‘Don’t get her pregnant. Just stick to fingering.’” I suspect that not all parents of millennials are as frank as Luke’s, but teenagers having sex is no longer taboo.

Luke’s attitude towards drugs encapsulates the Generation Zzzz ethos beautifully: although he has taken MDMA, he “researched” it beforehand. It is this lack of spontaneity that has shaped a generation of young fogeys. This cohort of grannies and boring bastards, of perpetual renters and jobseekers in an economy wrecked by less cautious generations, is one that has been tamed by anxiety and fear.

Eleanor Margolis is a freelance journalist, whose "Lez Miserable" column appears weekly on the New Statesman website.

This article first appeared in the 05 February 2015 issue of the New Statesman, Putin's war