Showing posts with label climate charts. Show all posts

Monday, November 4, 2013

More proof that "global warming" has been a hoax, almost from the beginning.

Global warming 'pause' may last for 20 more years and Arctic sea ice has already started to recover

Study says warmer temperatures are largely due to natural 300-year cycles
Actual increase in last 17 years lower than almost every prediction
Scientists likened continuing pause to a Mexican wave in a stadium

PUBLISHED: 19:32 EST, 2 November 2013 | UPDATED: 20:00 EST, 2 November 2013

The 17-year pause in global warming is likely to last into the 2030s and the Arctic sea ice has already started to recover, according to new research.

A paper in the peer-reviewed journal Climate Dynamics – by Professor Judith Curry of the Georgia Institute of Technology and Dr Marcia Wyatt – amounts to a stunning challenge to climate science orthodoxy.

Not only does it explain the unexpected pause, it suggests that the scientific majority – whose views are represented by the UN Intergovernmental Panel on Climate Change (IPCC) – have underestimated the role of natural cycles and exaggerated that of greenhouse gases.

Pause: How the Earth's average temperature defied scientists' predictions by remaining almost the same

The research comes amid mounting evidence that the computer models on which the IPCC based the gloomy forecasts of a rapidly warming planet in its latest report, published in September, are diverging widely from reality.

The graph shown above, based on a version published by Dr Ed Hawkins of Reading University on his blog, Climate Lab Book, reveals that actual temperatures are now below the predictions made by almost all the 138 models on which the IPCC relies.

The pause means there has been no statistically significant increase in world average surface temperatures since the beginning of 1997, despite the models’ projection of a steeply rising trend.

According to Dr Hawkins, the divergence is now so great that the world’s climate is cooler than what the models collectively predicted with ‘five to 95 per cent certainty’.

Curry and Wyatt say they have identified a climatic ‘stadium wave’ – the phenomenon known in Britain as a Mexican wave, in which the crowd at a stadium stand and sit so that a wave seems to circle the audience.

Recovery: A new study suggests global warming is at a halt and Arctic seas are starting to recover

In similar fashion, a number of cycles in the temperature of air and oceans, and the level of Arctic ice, take place across the Northern hemisphere over decades. Curry and Wyatt say there is evidence of this going back at least 300 years.

According to Curry and Wyatt, the theory may explain both the warming pause and why the computer models did not forecast it.

It also means that a large proportion of the warming that did occur in the years before the pause was due not to greenhouse gas emissions, but to the same cyclical wave.

‘The stadium wave signal predicts that the current pause in global warming could extend into the 2030s,’ said Wyatt. This is in sharp contrast with the IPCC’s report, which predicts warming of between 0.3 and 0.7C by 2035.

Wyatt added: ‘The stadium wave forecasts that sea ice will recover from its recent minimum.’ The record low seen in 2012, followed by the large increase in 2013, is consistent with the theory, she said.

Even IPCC report co-authors such as Dr Hawkins admit some of the models are ‘too hot’.

He said: ‘The upper end of the latest climate model projections is inconsistent’ with observed temperatures, though he added even the lower predictions could have ‘negative impacts’ if true.

But if the pause lasted another ten years, and there were no large volcanic eruptions, ‘then global surface temperatures would be outside the IPCC’s indicative likely range’.

Professor Curry went much further. ‘The growing divergence between climate model simulations and observations raises the prospect that climate models are inadequate in fundamental ways,’ she said.

If the pause continued, this would suggest that the models were not ‘fit for purpose’.

Sunday, October 14, 2012

Global warming stopped 16 years ago

Global warming stopped 16 years ago, reveals Met Office report quietly released... and here is the chart to prove it

The figures reveal that from the beginning of 1997 until August 2012 there was no discernible rise in aggregate global temperatures
This means that the ‘pause’ in global warming has now lasted for about the same time as the previous period when temperatures rose, 1980 to 1996

By DAVID ROSE

PUBLISHED: 16:42 EST, 13 October 2012 | UPDATED: 20:21 EST, 13 October 2012

The world stopped getting warmer almost 16 years ago, according to new data released last week.

The figures, which have triggered debate among climate scientists, reveal that from the beginning of 1997 until August 2012, there was no discernible rise in aggregate global temperatures.

This means that the ‘plateau’ or ‘pause’ in global warming has now lasted for about the same time as the previous period when temperatures rose, 1980 to 1996. Before that, temperatures had been stable or declining for about 40 years.

global temperature changes

Research: The new figures mean that the 'pause' in global warming has now lasted for about the same time as the previous period when temperatures rose, 1980 to 1996. This picture shows an iceberg melting in Eastern Greenland

The new data, compiled from more than 3,000 measuring points on land and sea, was issued quietly on the internet, without any media fanfare, and, until today, it has not been reported.

This stands in sharp contrast to the release of the previous figures six months ago, which went only to the end of 2010 – a very warm year.

Ending the data then means it is possible to show a slight warming trend since 1997, but 2011 and the first eight months of 2012 were much cooler, and thus this trend is erased.

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Some climate scientists, such as Professor Phil Jones, director of the Climatic Research Unit at the University of East Anglia, last week dismissed the significance of the plateau, saying that 15 or 16 years is too short a period from which to draw conclusions.

Others disagreed. Professor Judith Curry, who is the head of the climate science department at America’s prestigious Georgia Tech university, told The Mail on Sunday that it was clear that the computer models used to predict future warming were ‘deeply flawed’.

Even Prof Jones admitted that he and his colleagues did not understand the impact of ‘natural variability’ – factors such as long-term ocean temperature cycles and changes in the output of the sun. However, he said he was still convinced that the current decade would end up significantly warmer than the previous two.

Disagreement: Professor Phil Jones, left, from the University of East Anglia, dismissed the significance of the plateau. Professor Judith Curry, right, from Georgia Tech university in America, disagreed, saying the computer models used to predict future warming were ‘deeply flawed’

Warmer: Since 1880 the world has warmed by 0.75 degrees Celsius. This image shows floating icebergs in Greenland

The regular data collected on global temperature is called Hadcrut 4, as it is jointly issued by the Met Office’s Hadley Centre and Prof Jones’s Climatic Research Unit.

Since 1880, when worldwide industrialisation began to gather pace and reliable statistics were first collected on a global scale, the world has warmed by 0.75 degrees Celsius.

Some scientists have claimed that this rate of warming is set to increase hugely without drastic cuts to carbon-dioxide emissions, predicting a catastrophic increase of up to a further five degrees Celsius by the end of the century.

The new figures were released as the Government made clear that it would ‘bend’ its own carbon-dioxide rules and build new power stations to try to combat the threat of blackouts.

At last week’s Conservative Party Conference, the new Energy Minister, John Hayes, promised that ‘the high-flown theories of bourgeois Left-wing academics will not override the interests of ordinary people who need fuel for heat, light and transport – energy policies, you might say, for the many, not the few’ – a pledge that has triggered fury from green activists, who fear reductions in the huge subsidies given to wind-turbine firms.

Flawed science costs us dearly

Here are three not-so trivial questions you probably won’t find in your next pub quiz. First, how much warmer has the world become since a) 1880 and b) the beginning of 1997? And what has this got to do with your ever-increasing energy bill?

You may find the answers to the first two surprising. Since 1880, when reliable temperature records began to be kept across most of the globe, the world has warmed by about 0.75 degrees Celsius.

From the start of 1997 until August 2012, however, figures released last week show the answer is zero: the trend, derived from the aggregate data collected from more than 3,000 worldwide measuring points, has been flat.

Surprising: News that the world has got no warmer for the past 16 years will come as something of a shock. This picture shows drifting ice in Canada

Not that there has been any coverage in the media, which usually reports climate issues assiduously, since the figures were quietly release online with no accompanying press release – unlike six months ago when they showed a slight warming trend.

The answer to the third question is perhaps the most familiar. Your bills are going up, at least in part, because of the array of ‘green’ subsidies being provided to the renewable energy industry, chiefly wind.

They will cost the average household about £100 this year. This is set to rise steadily higher – yet it is being imposed for only one reason: the widespread conviction, which is shared by politicians of all stripes and drilled into children at primary schools, that, without drastic action to reduce carbon-dioxide emissions, global warming is certain soon to accelerate, with truly catastrophic consequences by the end of the century – when temperatures could be up to five degrees higher.

Hence the significance of those first two answers. Global industrialisation over the past 130 years has made relatively little difference.

And with the country committed by Act of Parliament to reducing CO2 by 80 per cent by 2050, a project that will cost hundreds of billions, the news that the world has got no warmer for the past 16 years comes as something of a shock.

It poses a fundamental challenge to the assumptions underlying every aspect of energy and climate change policy.

This ‘plateau’ in rising temperatures does not mean that global warming won’t at some point resume.

Damage: Global warming has been caused in part by the CO2 emitted by fossil fuels. This image shows smoke billowing out of a power station

But according to increasing numbers of serious climate scientists, it does suggest that the computer models that have for years been predicting imminent doom, such as those used by the Met Office and the UN Intergovernmental Panel on Climate Change, are flawed, and that the climate is far more complex than the models assert.

‘The new data confirms the existence of a pause in global warming,’ Professor Judith Curry, chair of the School of Earth and Atmospheric Science at America’s Georgia Tech university, told me yesterday.

‘Climate models are very complex, but they are imperfect and incomplete. Natural variability [the impact of factors such as long-term temperature cycles in the oceans and the output of the sun] has been shown over the past two decades to have a magnitude that dominates the greenhouse warming effect.

‘It is becoming increasingly apparent that our attribution of warming since 1980 and future projections of climate change needs to consider natural internal variability as a factor of fundamental importance.’

Professor Phil Jones, director of the Climate Research Unit at the University of East Anglia, who found himself at the centre of the ‘Climategate’ scandal over leaked emails three years ago, would not normally be expected to agree with her. Yet on two important points, he did.

The data does suggest a plateau, he admitted, and without a major El Nino event – the sudden, dramatic warming of the southern Pacific which takes place unpredictably and always has a huge effect on global weather – ‘it could go on for a while’.

Like Prof Curry, Prof Jones also admitted that the climate models were imperfect: ‘We don’t fully understand how to input things like changes in the oceans, and because we don’t fully understand it you could say that natural variability is now working to suppress the warming. We don’t know what natural variability is doing.’

Headache: The evidence is beginning to suggest that global warming may be happening much slower than the catastrophists have claimed - a conclusion with enormous policy implications for politicians at Westminster, pictured

Yet he insisted that 15 or 16 years is not a significant period: pauses of such length had always been expected, he said.

Yet in 2009, when the plateau was already becoming apparent and being discussed by scientists, he told a colleague in one of the Climategate emails: ‘Bottom line: the “no upward trend” has to continue for a total of 15 years before we get worried.’

But although that point has now been passed, he said that he hadn’t changed his mind about the models’ gloomy predictions: ‘I still think that the current decade which began in 2010 will be warmer by about 0.17 degrees than the previous one, which was warmer than the Nineties.’

Only if that did not happen would he seriously begin to wonder whether something more profound might be happening. In other words, though five years ago he seemed to be saying that 15 years without warming would make him ‘worried’, that period has now become 20 years.

Meanwhile, his Met Office colleagues were sticking to their guns. A spokesman said: ‘Choosing a starting or end point on short-term scales can be very misleading. Climate change can only be detected from multi-decadal timescales due to the inherent variability in the climate system.’

He said that for the plateau to last any more than 15 years was ‘unlikely’. Asked about a prediction that the Met Office made in 2009 – that three of the ensuing five years would set a new world temperature record – he made no comment. With no sign of a strong El Nino next year, the prospects of this happening are remote.

Why all this matters should be obvious. Every quarter, statistics on the economy’s output and models of future performance have a huge impact on our lives. They trigger a range of policy responses from the Bank of England and the Treasury, and myriad decisions by private businesses.

Yet it has steadily become apparent since the 2008 crash that both the statistics and the modelling are extremely unreliable. To plan the future around them makes about as much sense as choosing a wedding date three months’ hence on the basis of a long-term weather forecast.

Few people would be so foolish. But decisions of far deeper and more costly significance than those derived from output figures have been and are still being made on the basis of climate predictions, not of the next three months but of the coming century – and this despite the fact that Phil Jones and his colleagues now admit they do not understand the role of ‘natural variability’.

The most depressing feature of this debate is that anyone who questions the alarmist, doomsday scenario will automatically be labelled a climate change ‘denier’, and accused of jeopardising the future of humanity.

So let’s be clear. Yes: global warming is real, and some of it at least has been caused by the CO2 emitted by fossil fuels. But the evidence is beginning to suggest that it may be happening much slower than the catastrophists have claimed – a conclusion with enormous policy implications.

Sunday, October 30, 2011

Scientist who said climate change sceptics had been proved wrong accused of hiding truth by colleague Read more: http://www.dailymail.co.uk/sciencete

By DAVID ROSE

Last updated at 6:11 PM on 30th October 2011 hyperlink

It was hailed as the scientific study that ended the global warming debate once and for all – the research that, in the words of its director, ‘proved you should not be a sceptic, at least not any longer’.

Professor Richard Muller, of Berkeley University in California, and his colleagues from the Berkeley Earth Surface Temperatures project team (BEST) claimed to have shown that the planet has warmed by almost a degree centigrade since 1950 and is warming continually.

Published last week ahead of a major United Nations climate summit in Durban, South Africa, next month, their work was cited around the world as irrefutable evidence that only the most stringent measures to reduce carbon dioxide emissions can save civilisation as we know it.

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It was cited uncritically by, among others, reporters and commentators from the BBC, The Independent, The Guardian, The Economist and numerous media outlets in America.

The Washington Post said the BEST study had ‘settled the climate change debate’ and showed that anyone who remained a sceptic was committing a ‘cynical fraud’.

But today The Mail on Sunday can reveal that a leading member of Prof Muller’s team has accused him of trying to mislead the public by hiding the fact that BEST’s research shows global warming has stopped.

Prof Judith Curry, who chairs the Department of Earth and Atmospheric Sciences at America’s prestigious Georgia Institute of Technology, said that Prof Muller’s claim that he has proven global warming sceptics wrong was also a ‘huge mistake’, with no scientific basis.

Prof Curry is a distinguished climate researcher with more than 30 years experience and the second named co-author of the BEST project’s four research papers.

Her comments, in an exclusive interview with The Mail on Sunday, seem certain to ignite a furious academic row. She said this affair had to be compared to the notorious ‘Climategate’ scandal two years ago.

Poles apart: Former sceptic Prof Richard Muller, left, says the latest findings settle the climate debate once and for all. But Prof Judith Curry says such a claim is 'a mistake'

Like the scientists exposed then by leaked emails from East Anglia University’s Climatic Research Unit, her colleagues from the BEST project seem to be trying to ‘hide the decline’ in rates of global warming.

In fact, Prof Curry said, the project’s research data show there has been no increase in world temperatures since the end of the Nineties – a fact confirmed by a new analysis that The Mail on Sunday has obtained.

‘There is no scientific basis for saying that warming hasn’t stopped,’ she said. ‘To say that there is detracts from the credibility of the data, which is very unfortunate.’

However, Prof Muller denied warming was at a standstill.

‘We see no evidence of it [global warming] having slowed down,’ he told BBC Radio 4’s Today programme. There was, he added, ‘no levelling off’.

A graph issued by the BEST project also suggests a continuing steep increase

But a report to be published today by the Global Warming Policy Foundation includes a graph of world average temperatures over the past ten years, drawn from the BEST project’s data and revealed on its website.

This graph shows that the trend of the last decade is absolutely flat, with no increase at all – though the levels of carbon dioxide in the atmosphere have carried on rising relentlessly.

‘This is nowhere near what the climate models were predicting,’ Prof Curry said. ‘Whatever it is that’s going on here, it doesn’t look like it’s being dominated by CO2.’

Prof Muller also wrote an article for the Wall Street Journal. It was here, under the headline ‘The case against global warming scepticism’, that he proclaimed ‘there were good reasons for doubt until now’.

This, too, went around the world, with The Economist, among many others, stating there was now ‘little room for doubt’.

Such claims left Prof Curry horrified.

‘Of course this isn’t the end of scepticism,’ she said. ‘To say that is the biggest mistake he [Prof Muller] has made. When I saw he was saying that I just thought, “Oh my God”.’

In fact, she added, in the wake of the unexpected global warming standstill, many climate scientists who had previously rejected sceptics’ arguments were now taking them much more seriously.

They were finally addressing questions such as the influence of clouds, natural temperature cycles and solar radiation – as they should have done, she said, a long time ago.

Yesterday Prof Muller insisted that neither his claims that there has not been a standstill, nor the graph, were misleading because the project had made its raw data available on its website, enabling others to draw their own graphs.

However, he admitted it was true that the BEST data suggested that world temperatures have not risen for about 13 years. But in his view, this might not be ‘statistically significant’, although, he added, it was equally possible that it was – a statement which left other scientists mystified.

‘I am baffled as to what he’s trying to do,’ Prof Curry said.

Prof Ross McKittrick, a climate statistics expert from Guelph University in Ontario, added: ‘You don’t look for statistically significant evidence of a standstill.

‘You look for statistically significant evidence of change.’

The BEST project, which has been lavishly funded, brings together experts from different fields from top American universities.

It was set up 18 months ago in an effort to devise a new and more accurate way of computing changes in world temperatures by using readings from some 39,000 weather stations on land, instead of adding sea temperatures as well.

Some scientists, Prof Muller included, believe that this should provide a more accurate indication of how the world is responding to carbon dioxide.

The oceans, they argue, warm more slowly and this is why earlier global measurements which also cover the sea – such as those from the Climatic Research Unit at East Anglia University – have found no evidence of warming since the Nineties.

The usual way a high-profile project such as BEST would publish its results would be in a scientific journal, following a rigorous ‘peer review’ by other experts in the field.

The more eminent journals that publish climate research, such as Nature And Science, insist there must be no leaks to the media until this review is complete and if such leaks occur, they will automatically reject the research.

Earlier this year, the project completed four research papers.

As well as trends in world temperatures, they looked at the extent to which temperature readings can be distorted by urban ‘heat islands’ and the influence of long-term temperature cycles in the oceans. The papers were submitted to the Journal of Geophysical Research.

But although Prof Curry is the second named author of all four papers, Prof Muller failed to consult her before deciding to put them on the internet earlier this month, when the peer review process had barely started, and to issue a detailed press release at the same time.

He also briefed selected journalists individually. ‘It is not how I would have played it,’ Prof Curry said. ‘I was informed only when I got a group email. I think they have made errors and I distance myself from what they did.

‘It would have been smart to consult me.’ She said it was unfortunate that although the Journal of Geophysical Research had allowed Prof Muller to issue the papers, the reviewers were, under the journal’s policy, forbidden from public comment.

Prof McKittrick added: ‘The fact is that many of the people who are in a position to provide informed criticism of this work are currently bound by confidentiality agreements.

‘For the Berkeley team to have chosen this particular moment to launch a major international publicity blitz is a highly unethical sabotage of the peer review process.’

In Prof Curry’s view, two of the papers were not ready to be published, in part because they did not properly address the arguments of climate sceptics.

As for the graph disseminated to the media, she said: ‘This is “hide the decline” stuff. Our data show the pause, just as the other sets of data do. Muller is hiding the decline.

‘To say this is the end of scepticism is misleading, as is the statement that warming hasn’t paused. It is also misleading to say, as he has, that the issue of heat islands has been settled.’

Prof Muller said she was ‘out of the loop’. He added: ‘I wasn’t even sent the press release before it was issued.’

Prof Muller defended his behaviour yesterday, saying that all he was doing was ‘returning to traditional peer review’, issuing draft papers to give the whole ‘climate community’ a chance to comment.

As for the press release, he claimed he was ‘not seeking publicity’, adding: ‘This is simply a way of getting the media to report this more accurately.’

He said his decision to publish was completely unrelated to the forthcoming United Nations climate conference.

This, he said, was ‘irrelevant’, insisting that nothing could have been further from his mind than trying to influence it.