Has global warming stopped?

'The global temperature of 2007 is statistically the same as 2006 and every year since"

'The fact is that the global temperature of 2007 is statistically the same as 2006 and every year since 2001'. Plus read Mark Lynas's response

Global warming stopped? Surely not. What heresy is this? Haven’t we been told that the science of global warming is settled beyond doubt and that all that’s left to the so-called sceptics is the odd errant glacier that refuses to melt?

Aren’t we told that if we don’t act now rising temperatures will render most of the surface of the Earth uninhabitable within our lifetimes? But as we digest these apocalyptic comments, read the recent IPCC’s Synthesis report that says climate change could become irreversible. Witness the drama at Bali as news emerges that something is not quite right in the global warming camp.

With only few days remaining in 2007, the indications are the global temperature for this year is the same as that for 2006 – there has been no warming over the 12 months.

But is this just a blip in the ever upward trend you may ask? No.

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.

In principle the greenhouse effect is simple. Gases like carbon dioxide present in the atmosphere absorb outgoing infrared radiation from the earth’s surface causing some heat to be retained.

Consequently an increase in the atmospheric concentration of greenhouse gases from human activities such as burning fossil fuels leads to an enhanced greenhouse effect. Thus the world warms, the climate changes and we are in trouble.

The evidence for this hypothesis is the well established physics of the greenhouse effect itself and the correlation of increasing global carbon dioxide concentration with rising global temperature. Carbon dioxide is clearly increasing in the Earth’s atmosphere. It’s a straight line upward. It is currently about 390 parts per million. Pre-industrial levels were about 285 ppm. Since 1960 when accurate annual measurements became more reliable it has increased steadily from about 315 ppm. If the greenhouse effect is working as we think then the Earth’s temperature will rise as the carbon dioxide levels increase.

But here it starts getting messy and, perhaps, a little inconvenient for some. Looking at the global temperatures as used by the US National Oceanic and Atmospheric Administration, the UK’s Met Office and the IPCC (and indeed Al Gore) it’s apparent that there has been a sharp rise since about 1980.

The period 1980-98 was one of rapid warming – a temperature increase of about 0.5 degrees C (CO2 rose from 340ppm to 370ppm). But since then the global temperature has been flat (whilst the CO2 has relentlessly risen from 370ppm to 380ppm). This means that the global temperature today is about 0.3 deg less than it would have been had the rapid increase continued.

For the past decade the world has not warmed. Global warming has stopped. It’s not a viewpoint or a sceptic’s inaccuracy. It’s an observational fact. Clearly the world of the past 30 years is warmer than the previous decades and there is abundant evidence (in the northern hemisphere at least) that the world is responding to those elevated temperatures. But the evidence shows that global warming as such has ceased.

The explanation for the standstill has been attributed to aerosols in the atmosphere produced as a by-product of greenhouse gas emission and volcanic activity. They would have the effect of reflecting some of the incidental sunlight into space thereby reducing the greenhouse effect. Such an explanation was proposed to account for the global cooling observed between 1940 and 1978.

But things cannot be that simple. The fact that the global temperature has remained unchanged for a decade requires that the quantity of reflecting aerosols dumped put in our atmosphere must be increasing year on year at precisely the exact rate needed to offset the accumulating carbon dioxide that wants to drive the temperature higher. This precise balance seems highly unlikely. Other explanations have been proposed such as the ocean cooling effect of the Interdecadal Pacific Oscillation or the Atlantic Multidecadal Oscillation.

But they are also difficult to adjust so that they exactly compensate for the increasing upward temperature drag of rising CO2. So we are led to the conclusion that either the hypothesis of carbon dioxide induced global warming holds but its effects are being modified in what seems to be an improbable though not impossible way, or, and this really is heresy according to some, the working hypothesis does not stand the test of data.

It was a pity that the delegates at Bali didn’t discuss this or that the recent IPCC Synthesis report did not look in more detail at this recent warming standstill. Had it not occurred, or if the flatlining of temperature had occurred just five years earlier we would have no talk of global warming and perhaps, as happened in the 1970’s, we would fear a new Ice Age! Scientists and politicians talk of future projected temperature increases. But if the world has stopped warming what use these projections then?

Some media commentators say that the science of global warming is now beyond doubt and those who advocate alternative approaches or indeed modifications to the carbon dioxide greenhouse warming effect had lost the scientific argument. Not so.

Certainly the working hypothesis of CO2 induced global warming is a good one that stands on good physical principles but let us not pretend our understanding extends too far or that the working hypothesis is a sufficient explanation for what is going on.

I have heard it said, by scientists, journalists and politicians, that the time for argument is over and that further scientific debate only causes delay in action. But the wish to know exactly what is going on is independent of politics and scientists must never bend their desire for knowledge to any political cause, however noble.

The science is fascinating, the ramifications profound, but we are fools if we think we have a sufficient understanding of such a complicated system as the Earth’s atmosphere’s interaction with sunlight to decide. We know far less than many think we do or would like you to think we do. We must explain why global warming has stopped.

David Whitehosue was BBC Science Correspondent 1988–1998, Science Editor BBC News Online 1998–2006 and the 2004 European Internet Journalist of the Year. He has a doctorate in astrophysics and is the author of The Sun: A Biography (John Wiley, 2005).] His website is www.davidwhitehouse.com

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The dustman and the doctor: fairness and the student fees debate

The idea that education – all education – should be free is intoxicating and liberating. But there's a problem.

The most toxic political imagery of the student fees debate dates from 2010. First, there was Nick Clegg brandishing a sheet of paper bearing his election pledge that the Liberal Democrats would vote against “any increase” in tuition fees. Then, a few months later, there was the sight of protesters scrawling graffiti and urinating on the statue of Winston Churchill in Parliament Square. Churchill was rapidly restored, but Clegg – who, I am told, did not believe in the pledge when he signed it but could not resist the prospect of those student voters in university towns – never properly recovered.

The issue of how to fund English universities had been febrile for years – long before the 2008 financial crisis, the ballooning of the Budget deficit that followed and the 2010 Lib Dem vote for the vertiginous increase in English tuition fees. (University funding is a devolved matter, with the Scots going their own way.)

In 2004, Tony Blair, enfeebled by the absence of weapons of mass destruction in Iraq, had almost been knocked off his prime ministerial perch when he, too, trebled fees, albeit to a mere £3,000, to be paid back after graduation. Gordon Brown’s allies, smelling post-Iraq weakness, hovered over the Labour leader before allowing him – by a sliver – to survive.

The Conservatives have historically been less troubled by the matter. Students largely have not voted in high enough numbers – certainly not for them – to impinge on their chances of electoral success. Meanwhile, the centre left has had lumps kicked out of it while wrestling with the problem of how best to fund higher education. Jeremy Corbyn’s 2017 manifesto significantly changed Labour’s position, promising to abolish fees altogether; he would also, he told the NME, “deal with” student debt. That half-pledge has now become a vague “ambition” because of its estimated £100bn price tag.

As a piece of campaigning, it worked. By contrast, Ed Miliband got nowhere in 2015 with his promise to reduce fees by a third to £6,000. It was too little, too late to mobilise student voters or their concerned parents, but more than enough for George Osborne, an unrepentant Vince Cable and a nervous higher education sector (sotto voce) to raise questions about Labour’s fiscal rectitude and/or the financial security of universities.

The Institute for Fiscal Studies (IFS), in its disinterested and peskily rigorous way, joined in – and with a more subtle point, suggesting that cutting fees would benefit higher-earning graduates the most. Those who earned less over their lifetime would, in any event, not have to pay all of the money back.

Until Corbyn’s swashbuckling manifesto simplified matters, or oversimplified them, the left had been tied in knots on the fairness point from the moment that tuition fees were introduced, relatively quietly, in the peak-Blair year of 1998.

The idea that education – all education – should be free is intoxicating and liberating. It is intoxicating because one’s Enlightenment reflexes are happily triggered: the pursuit of knowledge is wonderful; knowledge leads to individual self-fulfilment and should be made available to the largest possible number. We all benefit from a better-educated population, not least by the spread of liberal values. Utilitarians rejoice – the country becomes economically more prosperous, though the evidence for this is irritatingly murky.

It is liberating because it is a beautifully simple proposition, and thus the complexity of nasty trade-offs – between those who go to university and those who don’t, between generations, between different sorts of universities, between disciplines and courses, between funding higher education and funding a zillion other priorities – is washed away by the dazzling premise. Free.

Alas, there is a problem. Once upon a time, a British university education was for the very few. The state, in the form of the general taxpayer, footed the bill. Now, around 40 per cent of 18- to 19-year-olds are at university and nobody in front-line politics is keen on hauling down the number, notwithstanding the occasional hyperventilating headline about useless degrees in golf course management or surfing studies.

The Liberal Democrats’ ill-fated 2010 manifesto had a little-noticed passage that called for scrapping the participation target of 50 per cent – alongside the now ritual aspiration to improve vocational training and apprenticeship schemes, a promise that is yet another reminder of a long-established and debilitating British weakness that nobody seems to know how to reverse. But mass higher education is here to stay – and it’s a good thing, too.

We could have chosen (and could still choose) both to fund increasing numbers of people going to university and to pay for all of their tuition, but that would not have been a self-funding investment – at least, not for a very long time. Other European countries with decent universities have indeed managed without asking graduates to contribute anywhere near as much as ours. The Swedes pay nothing for tuition. Dutch students pay a quarter of their English counterparts. The Germans have proportionately fewer students in tertiary education (though their vocational education is widely known to be heaps better), but their students are at university for longer and they pay very little for the pleasure. You get the picture.

It would require a lot of extra taxation if we were to go down that route – and there are many other competing demands beyond deficit reduction. Yet the issue is not only framed by tax priorities. We can’t easily afford to have the state picking up the tab because – an ugly fact – we are less well off than most northern European countries that charge less. Yes, we are the fifth-largest economy in the world – how could any of us, since the Brexit vote, not know that? – but we are far from being the fifth most economically prosperous country in the EU, once you allow for the intrusion of vulgar reality in the form of GDP per head. On that measure, we sit somewhere in the middle of the pack.

So who pays? Asking students to pay something is not in itself an outrage. The massive social and economic privileges that my generation accrued from our gloriously free university education may now be spread more widely but that has not eliminated the personal advantages that, on average, follow a degree. Graduates are more likely to get jobs, more likely to get better jobs and more likely to keep their jobs in a recession. The Department for Education puts the graduate premium on average at £250,000 before tax over a lifetime for women and £170,000 for men. These figures may be overstated and might not be sustained, but it is overwhelmingly likely that most graduates will still benefit materially from their degrees.

From the starting point in 2004 – long before the deficit soared – Blair and his then education secretary, Charles Clarke, decided that graduates should pay more once they began to earn sufficient money. I remember Blair at the time doing a BBC Newsnight special with an angry audience, packed with students telling him that he was wrecking their lives and had insufficient respect for their contribution to the greater good. A very articulate trainee doctor told Blair that she faced a mountain of debt (those were the days – that would now be several mountains). Blair responded with a range of left-wing arguments – at least, if you are of a redistributive frame of mind. Here are some highlights of the exchange:

Blair: I think it is unfair to ask general taxpayers – 80 per cent of whom have not been to university – when you have got an adult who perhaps wants to get an additional skill and they have to pay for it if they don’t go to university, to say to those people: we are not giving you education for free. And to say to under-fives, where we are desperately short of investment, to say to primary schools, where again we need more money, that we are going to give an even bigger subsidy to university students. Believe me, if I could say to you, “You can have it all for free,” I would love to.

The student, more than matching the prime minister’s passion, was spectacularly unimpressed.

Student: It really infuriates me that you say, “Why should the dustman fund the doctor?” When he has [a] heart attack, he will be pleased that I went to university and graduated as a doctor. Therefore he should contribute towards the cost of my degree.

Blair: But surely there should be a fair balance. He is contributing to the cost of your degree. Five-sixths of the cost of any degree, even after our proposals come in, will be contributed by the general taxpayer.

Not bad for a prime minister who was not often associated with causes dear to the dustmen part of his Labour flock – nor associated with redistribution in general. Of course, the figure of five-sixths paid for by the state is now, since the introduction of £9,000 tuition fees, a great deal smaller. The trainee doctor of 2017 is expected, over the course of their lifetime, to fork out much more. The average student debt is getting on for £50,000.

The current numbers are the result of decisions taken by Vince Cable of the Liberal Democrats and David Willetts of the Conservative Party. Unlike Blair, these two men were on the left of their parties, with a firm belief in the importance of education and its positive impact on social mobility. The hike in fees led to protests and occupations but also to universities getting much of the extra money that they needed, even if they were markedly reluctant to say so, doubtless for fear of stirring up their students.

There has been no drop in the participation rate of students from poorer family backgrounds. Quite the reverse – despite Jeremy Corbyn’s personal refusal to believe the evidence. But the repayment of fees means that, in effect, recent graduates pay income tax at a rate of 29 per cent once they earn more than £21,000. (The Department for Education cheerily call this “a contribution”, as if it were voluntary.)

The repayment point could have risen with inflation to ease the load but it hasn’t. That allows the Treasury to recoup more money. Why hasn’t the £21,000 limit been raised? The reason is that, under the current IFS estimates, three-quarters of graduates will not pay back all of their debt after 30 years, at which point it is forgiven. Worse, interest rates on this fee debt are 3 per cent above inflation – and thus nearly 6 per cent above the base rate. That is not quite at Wonga levels but it is patently demoralising and much too steep.

That is far from the end of the matter. Until last September, poorer students received a maintenance grant of up to £3,400 to help with their living costs. For better- off students, the state’s supposition has always been that their parents should and would contribute financially to ensure that their offspring could lead a reasonable life while at university. No government has chosen to make this very explicit: there are only so many enemies you want at any one time on any one issue.

But as the number of students rose, so did the number entitled to the grant, and as part of the strategy to reduce the country’s Budget deficit, those grants were turned into loans, too.

The Labour Party, before Jeremy Corbyn became leader, opposed the change when it was announced but not with much elan. From my Oxford eyrie, I was astonished at how little excitement this generated. Perhaps everyone was exhausted by the failed protests five years earlier.

There is mitigation. It is worth remembering that nobody pays anything for their tuition up front (part of the Blair package, too) and some universities, including mine, have good and reliable schemes to help those from poorer backgrounds and hardship funds for those whose circumstances – normally their parents’ circumstances – change while they are studying.

But I know from direct experience that many students worry a great deal about the debt that awaits them. And if graduates were feather-bedded before 1998 (and that includes me), it is hard not to sympathise now. The debt is too much for too many.

Blair defined the problem correctly – the question of who pays is about striking a fair balance – even if Corbyn seems uninterested in the pain involved in thinking it through and has opted for the easiest answer. But what should that balance be? A graduate tax for those of us who went to university when it was both a much scarcer resource and cheap would offend people who want as little retrospection as possible in the tax system. However, it would do something to deal with generational injustice, a subject on which Corbyn’s credentials are sullied by his fondness for the “triple lock” on pensions.

Labour’s policy of telling English students that they will pay nothing for their tuition is nowhere near as left-wing as it sounds, but it was far too successful a piece of retail politics for anyone in his team to consider going back to the drawing board. So now it is the Tories, facing an energised student vote, who have to engage with the issues for the first time since the tumult of 2010. The least they can do – and they should do it fast – is cut the interest rate. They won’t want to do any of it but, as the man said, the times they are a-changing.

Mark Damazer is master of St Peter’s College, Oxford