Climate Hysteria

Scientists have been forced to withdraw a study on projected sea level rise due to global warming after finding mistakes that undermined the findings.

The study, published in 2009 in Nature Geoscience, one of the top journals in its field, confirmed the conclusions of the 2007 report from the Intergovernmental Panel on Climate Change (IPCC). It used data over the last 22,000 years to predict that sea level would rise by between 7cm and 82cm by the end of the century.

At the time, Mark Siddall, from the Earth Sciences Department at the University of Bristol, said the study "strengthens the confidence with which one may interpret the IPCC results". The IPCC said that sea level would probably rise by 18cm-59cm by 2100, though stressed this was based on incomplete information about ice sheet melting and that the true rise could be higher.

Many scientists criticised the IPCC approach as too conservative, and several papers since have suggested that sea level could rise more. Martin Vermeer of the Helsinki University of Technology, Finland and Stefan Rahmstorf of the Potsdam Institute for Climate Impact Research in Germany published a study in December that projected a rise of 0.75m to 1.9m by 2100.

Read more: http://www.guardian.co.uk/environment/2010/feb/21/sea-level-geoscience-r...

he 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.

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

In 2007, the most comprehensive report to date on global warming, issued by the respected United Nations Intergovernmental Panel on Climate Change, made a shocking claim: The Himalayan glaciers could melt away as soon as 2035.

These glaciers provide the headwaters for Asia's nine largest rivers and lifelines for the more than one billion people who live downstream. Melting ice and snow would create mass flooding, followed by mass drought. The glacier story was reported around the world. Last December, a spokesman for the World Wildlife Fund, an environmental pressure group, warned, “The deal reached at Copenhagen will have huge ramifications for the lives of hundreds of millions of people who are already highly vulnerable due to widespread poverty.” To dramatize their country's plight, Nepal's top politicians strapped on oxygen tanks and held a cabinet meeting on Mount Everest.

But the claim was rubbish, and the world's top glaciologists knew it. It was based not on rigorously peer-reviewed science but on an anecdotal report by the WWF itself. When its background came to light on the eve of Copenhagen, Rajendra Pachauri, the head of the IPCC, shrugged it off. But now, even leading scientists and environmental groups admit the IPCC is facing a crisis of credibility that makes the Climategate affair look like small change.

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.

Read the rest of the article here: http://www.telegraph.co.uk/earth/environment/climatechange/7111525/UN-cl...