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.
Picture: Bridgeman Images
Show Hide image

The people is sublime: the long history of populism, from Robespierre to Trump

If liberal democracy is to survive, the tide of populism will have to be turned back. The question is: how?

A spectre of populism is haunting the world’s liberal democracies. Donald Trump’s victory in the US presidential election, the narrow Leave majority in the EU referendum, Theresa May’s decision to call a snap election – breaking the spirit of the Fixed-Term Parliaments Act passed by the government of which she was a member – and Recep Tayyip Erdogan’s victory in the recent Turkish referendum all testify to the strength of the populist tide that is sweeping through the North Atlantic world. The consequences have been calamitous: a shrunken public realm, a demeaned civic culture, threatened minorities, contempt for the rule of law and an increasingly ugly public mood. If liberal democracy is to survive, the tide will have to be turned back. The question is: how?

The first essential is to understand the nature of the beast. This is more difficult than it sounds. Most democratic politicians seek popularity, but populism and popularity are not the same. Today’s populism is the descendant of a long line of ancestors. The first unmistakably populist movement in history appeared well over two centuries ago during the later stages of the French Revolution. It was led by Robespierre (Thomas Carlyle’s “sea-green incorruptible”) and the Jacobins who promised a reign of “virtue”. They were inspired by the cloudy prose of Jean-Jacques Rousseau, who believed that mere individuals should be subject to the general will of the social whole and – if necessary – “forced to be free”. As the revolution gathered pace and foreign armies mustered on France’s frontiers, the Jacobins launched the first organised, state-led and ideologically legitimised Terror in history. Chillingly, Robespierre declared, “The people is sublime, but individuals are weak.” That is the cry of populists through the ages. Appropriately, the Terror ended with Robespierre lying on a plank, screaming with pain before he was executed by guillotine.

The French Revolution – which began with the storming of the Bastille and ended with Napoleon’s ascent to an ersatz imperial throne – has an epic quality about it missing from later chapters in the populist story. Ironically, the second chapter, which opened half a century later, was the work of Louis Bonaparte, nephew of the great Napoleon. In 1848 came a second revolution and a second Republic; Louis Bonaparte was elected president by a huge majority. He tried and failed to amend the constitution to make it possible for him to have a second term; and then seized power in a coup d’état. Soon afterwards he became emperor as Napoleon III. (“Napoleon le petit”, in Victor Hugo’s savage phrase.) The whole story provoked one of Karl Marx’s best aphorisms: “History repeats itself; the first time as tragedy and the second as farce.”

There have been plenty of tragedies since – and plenty of farces, too. Trump’s victory was a tragedy, but farcical elements are already in evidence. Erdogan’s victory was even more tragic than Trump’s, but farce is conspicuously absent. The Leave victory in the referendum was tragic: arguably, the greatest tragedy in the three-century history of Britain’s union state. As with Trump, farce is already in evidence – the agitated comings and goings that have followed Theresa May’s loss of her Commons majority; the inane debate over the nature of the Brexit that Britain should seek; and the preposterous suggestion that, freed of the “Brussels” incubus, Britain will be able to conclude costless trade deals with the state-capitalist dictatorship of China and the “America First” neo-isolationists in Washington, DC. Unlike the French farce of Napoleon III’s Second Empire, however, the British farce now in progress is more likely to provoke tears than laughter.


Picture: André Carrilho

Populism is not a doctrine or a governing philosophy, still less an ideology. It is a disposition, perhaps a mood, a set of attitudes and above all a style. The People’s Party, which played a significant part in American politics in the late 19th century, is a case in point. The farmers whose grievances inspired the People’s Party wanted cheaper credit and transport to carry their products to markets in the eastern states. Hence the party’s two main proposals. One was the nationalisation of the railways, to cheapen transport costs; the other was “free silver” – the use of silver as well as gold as currency, supposedly to cheapen credit. Even then, this was not a particularly radical programme. It was designed to reform capitalism, not to replace it, as the largely Marxist social-democratic parties of Europe were seeking to do.

Rhetoric was a different matter. Mary Elizabeth Lease, a prominent member of the People’s Party, declared that America’s was no longer a government of the people by the people and for the people, but “a government of Wall Street, by Wall Street and for Wall Street”. The common people of America, she added, “are slaves and monopoly is the master”.

The Georgian populist Tom Watson once asked if Thomas Jefferson had dreamed that the party he founded would be “prostituted to the vilest purposes of monopoly” or that it would be led by “red-eyed Jewish millionaires”. The People’s Party’s constitutive Omaha Platform accused the two main parties of proposing “to sacrifice our homes, lives and children on the altar of Mammon; to destroy the multitude in order to secure corruption funds from the millionaires”. The party’s aim was “to restore the government of the Republic to the hands of ‘the plain people’ with which class it originated”. Theodore Roosevelt promised “to walk softly and carry a big stick”. The People’s Party walked noisily and carried a small stick. Jeremy Corbyn would have been at home in it.

Almost without exception, populists promise national regeneration in place of decline, decay and the vacillations and tergiversations of a corrupt establishment and the enervated elites that belong to it. Trump’s call to “make America great again” is an obvious recent case. His attacks on “crooked Hillary”, on the courts that have impeded his proposed ban on Muslim immigrants from capriciously chosen Middle Eastern and African countries, on the “fake news” of journalists seeking to hold his administration to account, and, most of all, his attack on the constitutional checks and balances that have been fundamental to US governance for more than 200 years, are the most alarming examples of populist practice, not just in American history but in the history of most of the North Atlantic world.

There are intriguing parallels between Trump’s regime and Erdogan’s. Indeed, Trump went out of his way to congratulate Erdogan on Turkey’s referendum result in April – which gives him the right to lengthen his term of office to ten years, to strengthen his control over the judiciary and to decide when to impose a state of emergency. Even before the referendum, he had dismissed more than 100,000 public servants, including teachers, prosecutors, judges and army officers; 4,000 were imprisoned. The Kurdish minority was – and is – repressed. True, none of this applies to Trump. But the rhetoric of the thin-skinned, paranoid US president and his equally thin-skinned and paranoid Turkish counterpart comes from the same repertoire. In the Turkish referendum Erdogan declared: “My nation stood upright and undivided.” It might have been Trump clamorously insisting that the crowd at his inauguration was bigger than it was.

***

The best-known modern British populists – Margaret Thatcher, Nigel Farage and David Owen – form a kind of counterpoint. In some ways, all three have harked back to the themes of the 19th-century American populists. Thatcher insisted that she was “a plain, straightforward provincial”, adding that her “Bloomsbury” was Grantham – “Methodism, the grocer’s shop, Rotary and all the serious, sober virtues, cultivated and esteemed in that environment”. Farage declared that the EU referendum was “a victory for ‘the real people’ of Britain” – implying, none too subtly, that the 48 per cent who voted Remain were somehow unreal or, indeed, un-British.

On a holiday job on a building site during the Suez War, Owen experienced a kind of epiphany. Hugh Gaitskell was criticising Anthony Eden, the prime minister, on television and in the House of Commons, but Owen’s workmates were solidly in favour of Eden. That experience, he said, made him suspicious of “the kind of attitude which splits the difference on everything. The rather defeatist, even traitorous attitude reflected in the pre-war Apostles at Cambridge.” (Owen voted for Brexit in 2016.)

Did he really believe that Bertrand Russell, John Maynard Keynes and George Moore were traitorous? Did he not know that they were Apostles? Or was he simply lashing out, Trump-like, at an elite that disdained him – and to which he yearned to belong?

Thatcher’s Grantham, Farage’s real people and David Owen’s workmates came from the same rhetorical stable as the American populists’ Omaha Platform. But the American populists really were plain, in their sense of the word, whereas Thatcher, Farage and Owen could hardly have been less so. Thatcher (at that stage Roberts) left Grantham as soon as she could and never looked back. She went to Somerville College, Oxford, where she was a pupil of the Nobel laureate Dorothy Hodgkin. She married the dashing and wealthy Denis Thatcher and abandoned science to qualify as a barrister before being elected to parliament and eventually becoming prime minister. Farage worked as a metals trader in the City before becoming leader of the UK Independence Party. Owen went to the private Bradfield College before going up to Cambridge to read medicine. Despite his Welsh antecedents, he looks and sounds like a well-brought-up English public school boy. He was elected to parliament in 1966 at the age of 28 and was appointed under-secretary for the navy at 30. He then served briefly as foreign secretary in James Callaghan’s miserable Labour government in the 1970s.

Much the same is true of Marine Le Pen in France. She is a hereditary populist – something that seems self-contradictory. The Front National (FN) she heads was founded by her father, Jean-Marie Le Pen – Holocaust denier, anti-Semite, former street brawler and sometime Poujadist. In the jargon of public relations, she has worked hard to “de-toxify” the FN brand. But the Front is still the Front; it appeals most strongly to the ageing and insecure in the de-industrialised areas of the north-east. Marine Le Pen applauded the Leave victory in Britain’s referendum – she seeks to limit immigration, just as Ukip did in the referendum and as the May government does now.

Above all, the Front National appeals to a mythologised past, symbolised by the figure of Joan of Arc. Joan was a simple, illiterate peasant from an obscure village in north-eastern France, who led the French king’s forces to a decisive victory over the English in the later stages of the Hundred Years War. She was captured by England’s Burgundian allies, and the English burned her at the stake at the age of 19. She was beatified in 1909 and canonised in 1920. For well over a century, she has been a heroine for the Catholic French right, for whom the revolutionary triad of liberté, egalité, fraternité is either vacuous or menacing.

***

The past to which the FN appeals is uniquely French. It is also contentious. A struggle over the ownership of the French past has been a theme of French politics ever since the French Revolution. But other mythologised pasts have figured again and again in populist rhetoric and still do. Mussolini talked of returning to the time of the Roman empire when the Mediterranean was Mare Nostrum. Trump’s “Make America great again” presupposes a past when America was great, and from which present-day Americans have strayed, thanks to Clintonesque crooks and the pedlars of fake news. “Take back control” – the mantra of the Brexiteers in the referendum – presupposes a past in which the British had control; Owen’s bizarre pre-referendum claim that, if Britain left the EU, she would be free to “rediscover the skills of blue water diplomacy” presupposed a time when she practised those skills. Vladimir Putin, another populist of sorts, is patently trying to harness memories of tsarist glory to his chariot wheels. Margaret Thatcher, the “plain, straightforward provincial” woman, sought to revive the “vigorous virtues” of her Grantham childhood and the “Victorian values” that underpinned them.

As well as mythologising the past, populists mythologise the people. Those for whom they claim to speak are undifferentiated, homogeneous and inert. Populists have nothing but contempt for de Tocqueville’s insight that the ever-present threat of majority tyranny can be kept at bay only by a rich array of intermediate institutions, including townships, law courts and a free press, underpinned by the separation of powers.

For populists, the threat of majority tyranny is a phantom, invented by out-of-touch and craven elitists. Law courts that stand in the way of the unmediated popular will are “enemies of the people”, as the Daily Mail put it. There is no need to protect minorities against the tyranny of the majority: minorities are either part of the whole, in which case they don’t need protection, or self-excluded from it, in which case they don’t deserve to be protected.

Apparent differences of interest or value that cut across the body of the people, that divide the collective sovereign against itself, are products of elite manipulation or, in Thatcher’s notorious phrase, of “the enemy within”. For there is a strong paranoid streak in the populist mentality. Against the pure, virtuous people stand corrupt, privileged elites and sinister, conspiratorial subversives. The latter are forever plotting to do down the former.

Like pigs searching for truffles, populists search for subversives. Inevitably, they find what they are looking for. Joe McCarthy was one of the most squalid examples of the populist breed: for years, McCarthyism was a baneful presence in Hollywood, in American universities, newspaper offices and in the public service, ruining lives, restricting free expression and making it harder for the United States to win the trust of its European allies. The barrage of hatred and contempt that the tabloid press unleashed on opponents of Theresa May’s pursuit of a “hard” Brexit is another example. Her astounding claim that a mysterious entity known as “Brussels” was seeking to interfere in the British general election is a third.

As the Princeton political scientist Jan-Werner Müller argues, all of this strikes at the heart of democratic governance. Democracy depends on open debate, on dialogue between the bearers of different values, in which the protagonists learn from each other and from which they emerge as different people. For the Nobel laureate, philosopher and economist Amartya Sen, democracy is, above all, “public reasoning”; and that is impossible without social spaces in which reasoning can take place. Populism is singular; democracy is plural. The great question for non-populists is how to respond to the populist threat.

Two answers are in contention. The first is Theresa May’s. It amounts to appeasement. May’s purported reason for calling a snap general election was that the politicians were divided, whereas the people were united. It is hard to think of a better – or more frightening – summary of the spirit of populism. The second answer is Emmanuel Macron’s. For the moment, at least, he is astonishingly popular in France. More important, his victory over Le Pen has shown that, given intelligence, courage and generosity of spirit, the noxious populist tide can be resisted and, perhaps, turned back. 

David Marquand’s most recent book is “Mammon’s Kingdom”: an Essay on Britain Now” (Allen Lane)