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Global Warming in Last 15 Years Insignificant, U.K.'s Top Climate Scientist Admits

The embattled ex-head of the research center at the heart of the Climate-gate scandal dropped a bombshell over the weekend, admitting in an interview with the BBC that there has been no global warming over the past 15 years.

Phil Jones, former head of the Climatic Research Unit (CRU) of the University of East Anglia, made a number of eye-popping statements to the BBC's climate reporter on Sunday. Data from CRU, where Jones was the chief scientist, is key evidence behind the claim that the growth of cities (which are warmer than countryside) isn't a factor in global warming and was cited by the U.N.'s climate science body to bolster statements about rapid global warming in recent decades.

Jones's latest statements seemed to contradict the CRU's data.

In response to the question, "do you agree that from 1995 to the present there has been no statistically significant global warming?", Jones said yes, adding that the average increase of 0.12C per year over that time period "is quite close to the significance level. Achieving statistical significance in scientific terms is much more likely for longer periods, and much less likely for shorter periods."

Jones is nevertheless 100% confident that the climate has warmed, he stated, admitting that the Climate-gate scandal has undermined public confidence in science. The scandal has worn down Jones as well: Since the e-mails emerged -- and were subsequently posted online at www.EastAngliaEmails.com -- Jones has stepped down from his position, been forced to admit that he “misjudged” the handling of requests for information, and even acknowledged contemplating suicide.

Jones also allowed for the possibility that the world as a whole was warmer in medieval times than it is today -- a concession that may also undermine theories that global warming is caused by man.

In addition, Jones admitted that an overall lack of organization, and his poor record keeping and office-tidying skills, had contributed to his reluctance to share data with critics, which he regretted.

"To say when you're the record keeper for the globe's temperature that you're not a good record keeper, well, that's going to come back to haunt you for a long, long time," Pat Michaels.of the Cato Institute, a public-policy think tank, told Fox News.

For More Information:  http://news.bbc.co.uk/2/hi/science/nature/8511670.stm

World may not be warming, say scientists

http://www.timesonline.co.uk/tol/news/environment/article7026317.ece

The United Nations climate panel faces a new challenge with scientists casting doubt on its claim that global temperatures are rising inexorably because of human pollution.

In its last assessment the Intergovernmental Panel on Climate Change (IPCC) said the evidence that the world was warming was “unequivocal”.

It warned that greenhouse gases had already heated the world by 0.7C and that there could be 5C-6C more warming by 2100, with devastating impacts on humanity and wildlife. However, new research, including work by British scientists, is casting doubt on such claims. Some even suggest the world may not be warming much at all.

“The temperature records cannot be relied on as indicators of global change,” said John Christy, professor of atmospheric science at the University of Alabama in Huntsville, a former lead author on the IPCC.

The doubts of Christy and a number of other researchers focus on the thousands of weather stations around the world, which have been used to collect temperature data over the past 150 years.

These stations, they believe, have been seriously compromised by factors such as urbanisation, changes in land use and, in many cases, being moved from site to site.
Christy has published research papers looking at these effects in three different regions: east Africa, and the American states of California and Alabama.

“The story is the same for each one,” he said. “The popular data sets show a lot of warming but the apparent temperature rise was actually caused by local factors affecting the weather stations, such as land development.”

The IPCC faces similar criticisms from Ross McKitrick, professor of economics at the University of Guelph, Canada, who was invited by the panel to review its last report.
The experience turned him into a strong critic and he has since published a research paper questioning its methods.

“We concluded, with overwhelming statistical significance, that the IPCC’s climate data are contaminated with surface effects from industrialisation and data quality problems. These add up to a large warming bias,” he said.

Such warnings are supported by a study of US weather stations co-written by Anthony Watts, an American meteorologist and climate change sceptic.

His study, which has not been peer reviewed, is illustrated with photographs of weather stations in locations where their readings are distorted by heat-generating equipment.

Some are next to air- conditioning units or are on waste treatment plants. One of the most infamous shows a weather station next to a waste incinerator.

Watts has also found examples overseas, such as the weather station at Rome airport, which catches the hot exhaust fumes emitted by taxiing jets.

In Britain, a weather station at Manchester airport was built when the surrounding land was mainly fields but is now surrounded by heat-generating buildings.

Terry Mills, professor of applied statistics and econometrics at Loughborough University, looked at the same data as the IPCC. He found that the warming trend it reported over the past 30 years or so was just as likely to be due to random fluctuations as to the impacts of greenhouse gases. Mills’s findings are to be published in Climatic Change, an environmental journal.

“The earth has gone through warming spells like these at least twice before in the last 1,000 years,” he said.

Kevin Trenberth, a lead author of the chapter of the IPCC report that deals with the observed temperature changes, said he accepted there were problems with the global thermometer record but these had been accounted for in the final report.

“It’s not just temperature rises that tell us the world is warming,” he said. “We also have physical changes like the fact that sea levels have risen around five inches since 1972, the Arctic icecap has declined by 40% and snow cover in the northern hemisphere has declined.”

The European Centre for Medium-Range Weather Forecasts has recently issued a new set of global temperature readings covering the past 30 years, with thermometer readings augmented by satellite data.

Dr Vicky Pope, head of climate change advice at the Met Office, said: “This new set of data confirms the trend towards rising global temperatures and suggest that, if anything, the world is warming even more quickly than we had thought.”

UN climate change panel based claims on student dissertation and magazine article

UN climate change panel based claims on student dissertation and magazine article The United Nations' expert panel on climate change based claims about ice disappearing from the world's mountain tops on a student's dissertation and an article in a mountaineering magazine.

By Richard Gray, Science Correspondent and Rebecca Lefort
Published: 9:00PM GMT 30 Jan 2010
Telegraph.co.uk
http://www.telegraph.co.uk/earth/environment/climatechange/7111525/UN-climate-change-panel-based-claims-on-student-dissertation-and-magazine-article.html

Officials were forced earlier this month to retract inaccurate claims in the IPCC's report about the melting of Himalayan glaciers Photo: GETTY

The revelation will cause fresh embarrassment for the Intergovernmental Panel on Climate Change (IPCC), which had to issue a humiliating apology earlier this month over inaccurate statements about global warming.

The IPCC's remit is to provide an authoritative assessment of scientific evidence on climate change.

 

In its most recent report, it stated that observed reductions in mountain ice in the Andes, Alps and Africa was being caused by global warming, citing two papers as the source of the information.

However, it can be revealed that one of the sources quoted was a feature article published in a popular magazine for climbers which was based on anecdotal evidence from mountaineers about the changes they were witnessing on the mountainsides around them.

The other was a dissertation written by a geography student, studying for the equivalent of a master's degree, at the University of Berne in Switzerland that quoted interviews with mountain guides in the Alps.

The revelations, uncovered by The Sunday Telegraph, have raised fresh questions about the quality of the information contained in the report, which was published in 2007.

It comes after officials for the panel were forced earlier this month to retract inaccurate claims in the IPCC's report about the melting of Himalayan glaciers.

Sceptics have seized upon the mistakes to cast doubt over the validity of the IPCC and have called for the panel to be disbanded.

This week scientists from around the world leapt to the defence of the IPCC, insisting that despite the errors, which they describe as minor, the majority of the science presented in the IPCC report is sound and its conclusions are unaffected.

But some researchers have expressed exasperation at the IPCC's use of unsubstantiated claims and sources outside of the scientific literature.

Professor Richard Tol, one of the report's authors who is based at the Economic and Social Research Institute in Dublin, Ireland, said: "These are essentially a collection of anecdotes.

"Why did they do this? It is quite astounding. Although there have probably been no policy decisions made on the basis of this, it is illustrative of how sloppy Working Group Two (the panel of experts within the IPCC responsible for drawing up this section of the report) has been.

"There is no way current climbers and mountain guides can give anecdotal evidence back to the 1900s, so what they claim is complete nonsense."

The IPCC report, which is published every six years, is used by government's worldwide to inform policy decisions that affect billions of people.

The claims about disappearing mountain ice were contained within a table entitled "Selected observed effects due to changes in the cryosphere produced by warming".

It states that reductions in mountain ice have been observed from the loss of ice climbs in the Andes, Alps and in Africa between 1900 and 2000.

The report also states that the section is intended to "assess studies that have been published since the TAR (Third Assessment Report) of observed changes and their effects".

But neither the dissertation or the magazine article cited as sources for this information were ever subject to the rigorous scientific review process that research published in scientific journals must undergo.

The magazine article, which was written by Mark Bowen, a climber and author of two books on climate change, appeared in Climbing magazine in 2002. It quoted anecdotal evidence from climbers of retreating glaciers and the loss of ice from climbs since the 1970s.

Mr Bowen said: "I am surprised that they have cited an article from a climbing magazine, but there is no reason why anecdotal evidence from climbers should be disregarded as they are spending a great deal of time in places that other people rarely go and so notice the changes."

The dissertation paper, written by professional mountain guide and climate change campaigner Dario-Andri Schworer while he was studying for a geography degree, quotes observations from interviews with around 80 mountain guides in the Bernina region of the Swiss Alps.

Experts claim that loss of ice climbs are a poor indicator of a reduction in mountain ice as climbers can knock ice down and damage ice falls with their axes and crampons.

The IPCC has faced growing criticism over the sources it used in its last report after it emerged the panel had used unsubstantiated figures on glacial melting in the Himalayas that were contained within a World Wildlife Fund (WWF) report.

It can be revealed that the IPCC report made use of 16 non-peer reviewed WWF reports.

One claim, which stated that coral reefs near mangrove forests contained up to 25 times more fish numbers than those without mangroves nearby, quoted a feature article on the WWF website.

In fact the data contained within the WWF article originated from a paper published in 2004 in the respected journal Nature.

In another example a WWF paper on forest fires was used to illustrate the impact of reduced rainfall in the Amazon rainforest, but the data was from another Nature paper published in 1999.

When The Sunday Telegraph contacted the lead scientists behind the two papers in Nature, they expressed surprise that their research was not cited directly but said the IPCC had accurately represented their work.

The chair of the IPCC Rajendra Pachauri has faced mounting pressure and calls for his resignation amid the growing controversy over the error on glacier melting and use of unreliable sources of information.

A survey of 400 authors and contributors to the IPCC report showed, however, that the majority still support Mr Pachauri and the panel's vice chairs. They also insisted the overall findings of the report are robust despite the minor errors.

But many expressed concern at the use of non-peer reviewed information in the reports and called for a tightening of the guidelines on how information can be used.

The Met Office, which has seven researchers who contributed to the report including Professor Martin Parry who was co-chair of the working group responsible for the part of the report that contained the glacier errors, said: "The IPCC should continue to ensure that its review process is as robust and transparent as possible, that it draws only from the peer-reviewed literature, and that uncertainties in the science and projections are clearly expressed."

Roger Sedjo, a senior research fellow at the US research organisation Resources for the Future who also contributed to the IPCC's latest report, added: "The IPCC is, unfortunately, a highly political organisation with most of the secretariat bordering on climate advocacy.

"It needs to develop a more balanced and indeed scientifically sceptical behaviour pattern. The organisation tend to select the most negative studies ignoring more positive alternatives."

The IPCC failed to respond to questions about the inclusion of unreliable sources in its report but it has insisted over the past week that despite minor errors, the findings of the report are still robust and consistent with the underlying science.