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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When heritage becomes hate: why my home town of Charlottesville needs to address its complex past

After an invasion of white supremacists, we need to see what our history means today.

Watching a tragedy happening in slow motion, without any way to stop it - that’s how it has felt to be from Charlottesville, Virginia in the summer of 2017. A city that used to always get voted “happiest town in the USA” when I was growing up was the target this weekend of an ugly white supremacist movement whose roots spread far from the city.

It was a huge surprise when we won the lottery of Nazi flags, with our stupid old statues that have become icons of international fascism, with a park named after a distantly forgotten old man becoming a site of struggle for an attempted racist coup of the United States. Our first reaction is: they aren´t from here. Our second: make them go away. Our third: a realisation we need to examine the way that our own ways of life, which we thought so harmless, have inspired such horrible feelings in strangers.

Maybe for my African-American classmates at high school the statue of Confederate general Robert E Lee, and the park when it was still named after him rather than Emancipation Park, always meant violence. Pulling the statue down says no more about the historical Lee than tearing down Lenin in '89 says about socialism. We've been invaded by people pretending to protect us from invasion, and the symbols of our past will never matter as much as living people do.

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The invaders picked our town, probably, because Virginia was a confederate state, and was in fact where the southern gentry used to live. Lee exemplified this tradition. He was son of Lighthorse Harry Lee, a hero of the revolutionary war and governor of Virginia, and is a descendant of one of “Virginia’s first families,” the aristocratic Englishmen who emigrated to Virginia when it was a British colony. He is part of Charlottesville's heritage, and perhaps not even all that shameful a part. He opposed the secession of the confederacy, supported the reconstruction after the war, including giving rights to recently freed slaves. Not exactly woke, but for a confederate general, not as bad as some.

We were taught at Venable Elementary School that he fought only reluctantly, to defend his land, not slavery. In the version we learned, one would imagine Lee being very opposed to people from the Midwest coming to Virginia in cars with Ohio license plates to murder Virginians. Many non-racist Virginians, including quite a few friends, respect Lee deeply - the same is true in towns like New Orleans where other Lee statues are being taken down. Yet if once we could fool ourselves into thinking that the statue didn't represent hatred and racial hierarchies, we can't anymore. The discussion of local history has turned into one of national identity. The statue should be gone by Christmas. 

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The real hero of Charlottesville is the town’s founder, Thomas Jefferson, who was among the most enigmatic of the founding fathers, idealistic and hypocritical - a real American, in other words. His idea of the gentleman farmer is also part of our heritage. It was an alternative to Hamiltonian industrial capitalism, but lost out in the tustle to shape American history. Much like English contemporaries such as William Cobbett, Jefferson believed in a rural ideal, reading poetry by morning, farming by afternoon, playing the harpsichord by night. His thought is also present in our beautiful "academical village" of the University of Virginia which he also founded. It is one of UNESCO’s few world heritage sites in the United States, so I guess it is part fo the globe's heritage as well, and it is also where the white supremacists stomped around with their tiki torches.

It’s time for us to stop being romantic about Jefferson, too. The statue in our minds needs to come down. We can recognize the great parts of his work, of his thought, in Charlottesville today, but we can also recognise that he allowed himself to use violence to dominate others, that he owned slaves and raped them. And we can recognise that equivalent scenarios continue to play out today, and will continue to play out until we are willing to face the truth.

There can be no more excuses. It’s not about Jefferson, or Lee, after all. We use monuments, statues, heroes, to inspire ourselves. In the end, the “truth” about Jefferson or Lee is a matter of trivia and history. Today, for every white male in America, we need to deconstruct the parts of our identity built on the graves of others. It’s not easy.

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Jefferson's gentleman farmer was the forerunner of the people who populate the gentrified Charlottesville that exists today of expensive coffee-shops and celebrity-filled suburbs. This romantic idea, much like the lifestyles of the American and English elite today, seems to engender a lot of resentment from those who can only watch helplessly, and are often gentrified out. It’s not only immigrants or, in the United States, African-Americans, who are denied access to America's Williamsburgs and Charlottesvilles, London's Shoreditches and Oxfords. In Charlottesville, descendants of white sharecroppers and black slaves alike are unable to afford $15 glasses of local Virginia wine.

The paradox implicit in Jefferson’s beautiful idea is that in the end, it’s impossible to sustain this chilled-out and happy lifestyle without the labor being done by others, be they slaves, sharecroppers, or factory workers in China. If America is in trouble now, the conflict comes precisely from the fact that our universalist ideas of freedom, equality, and liberty correspond to an economy that is anything but universal. We actually did it, keep doing it, and unless we can use these ridiculous men dancing through our streets iin Halloween costumes as a funhouse mirror to make us see ourselves as we are, we’ll probably keep doing it.

I resent Jefferson for his hypocrisy, because in truth, I would love it if America looked more like Charlottesville than the industrialized and nasty-looking Interstate 95 highway that leads up the East Coast, the aftermath of Hamiltonian industrial-revolution factory America. The New Jersey towns, the gas stations, what we contemptuously call “McMansions,” suburban Northern Virginia... none of it is really authentic enough. Parallel to the rich and ugly suburbs, are poor and ugly towns, the sort of places with unemployment and discounts on cereal that tastes like sugary trash in the supermarket.

The residents of these towns don’t hate the residents of more gentrified towns for our organic granola, they hate the world for the structures of oppression that they can’t escape, even as an international class, an educated class, a well-meaning class, escapes without even needing to. We coexisted in the same place but not the same set of opportunities, and we glided on to new and bigger worlds of possibility, ones denied to those of different class backgrounds, regardless of their ethnicity.

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Some of my African-American classmates at Charlottesville High School were likely descendants of Jefferson’s slaves, coming from poorer neighbourhoods and housing projects and taking "standard" level classes, with honors and AP classes for students whose parents worked in the University (very liberal, of course), a genteel place where every year, some kid wears blackface or a Nazi outfit to a party - as a joke, of course. While my classmates in AP and Honors classes got help from our teachers in applying to Ivy League schools, the general level classes saw black and white students who shared poorer backgrounds acting out to get attention from harried teachers. This was public school, but Charlottesville’s many excellent private schools, of course, didn’t even have the general level students at all.

Despite some southerners such as Lee supporting the post-war “reconstruction,” white resistance to racial equality led to a Jim Crow system that wasn’t much better than slavery, and an American South which dozed in sweaty decline while the rest of the country industrialised and modernized. From 1865 to 1965, not much happened in the South. True, there were intellectual movements like the Agrarians, whose 1920s manifesto “I’ll Take My Stand” I found one high school afternoon in the local bookstore, we had our Faulkners, our occasional geniuses. But as a society, it was stagnant. 

It was only when the civil rights movement began that the south began to actually rise again. UVa went from being a minor regional school to being a world-class one. Charlottesville went from being a mediocre gentleman’s club to a place that people of all backgrounds could make lives for themselves in the public service. And we, the public, gained so much - that’s why my family chose to live there.

I remember as a child strolling the beautiful downtown mall to go to dinner al fresco with my parents, my father pointed out a man in a turban; it was Satyendra Huja, a Sikh professor at the university who had planned the downtown mall, and made a useless street into one of the nicest places to congregate in town. In 2012, Huja became the mayor. I guess the former mayor of Charlottesville who single-handedly made Charlottesville one of the most charming towns in the country often gets told to “go home,” as if that's somewhere else.

Martin Luther King Jr.’s birthday is a national holiday in the United States, but in Virginia it used to be “Lee/King/Jackson” day, with two confederate officers added in just as a reminder. That’s not really our heritage, and as students, we were grateful for the day but always laughed at how immature it was that the powers that be needed to block out Dr. King’s achievements so much.

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Charlottesville is a southern town true to and even obsessed with our heritage - a place filled with museums, historians, bookstores - which wants to dissect that heritage to remove the parts of our forefathers (and mothers) lives that we can’t accept, like a sandwich that you open up, take the pickles out of, and then keep on eating. We love our heritage in Virginia. We read about it, celebrate it, live it every day. But heritage isn’t a static thing, fixed in time, and the walls between myth and history are thin. In fact, perhaps knowing about your heritage is the ultimate form of privilege. I doubt that either the descendants of slaves I went to high school  with, or the “redneck” (so-called because they got sunburned by working in the fields - “redneck” is a class slur) descendants of the illiterate sharecroppers of rural Maryland, do. 

What happened this weekend to Charlottesville could happen to any town as long as we those who are deprived of their history and who don’t feel at home in their hometown. But the Charlottesville I remember, and the one it is now, proves that you can go from war and conflict and institutionalised racism to one where people of all races and identities can coexist, for the most part, peacefully and happily. We can, if we try, honor Jefferson for his achievements without forgetting the slaves his beautiful buildings were built by. A “Memorial to Enslaved Laborers” is being built on the campus he founded.

For the first time, every one of my old friends is thinking about racism, white privilege, the origins of violence, and what we can do about it. We can honor Jefferson and General Lee’s memory best by trying to learn from their mistakes. Maybe, if it seems like we are able to solve these problems, I’ll have a child myself. I hope she goes to Venable Elementary School, and I’ll take her to Emancipation Park afterwards.