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Climategate, the 2009 exposure of misconduct at the University of East Anglia, was a terrible blow to the reputation of climatology, and indeed to that of British and American science. Although that story hasn’t been in the news in recent months, new evidence of similar scientific wrongdoing continues to emerge, with a new scandal hitting the climate blogosphere just a few days ago.And central to the newest story is one of the Climategate scientists: Keith Briffa, an expert in reconstructing historical temperature records from tree rings. More particularly, the recent scandal involves a tree-ring record Briffa prepared for a...

As many readers are probably aware, there has been an important new posting at Climate Audit about the Yamal affair. This posting is an attempt to set out the whole story of Yamal. It reworks an article I did in 2009 and incorporates new developments since that time. I hope readers find it useful. I have also prepared a Kindle version of the post, for which there is a small charge - click here:Please also consider hitting the tip jar.The story of Michael Mann's Hockey Stick reconstruction, its statistical bias and the influence of the bristlecone pines is well known....

Global Warming: Russian analysts accuse Britain's Meteorological Office of cherry-picking Russian temperature data to "hide the decline" in global temperatures. Is Copenhagen rooted in a single tree in Siberia? Michael Mann, a Penn State meteorologist, wrote in Friday's Washington Post that "stolen" e-mails from the University of East Anglia's Climate Research Unit still don't alter the evidence for climate change. Mann, a creator of the discredited hockey-stick graph used in reports from the U.N.'s Intergovernmental Panel on Climate Change to show man-made warming, attacks climate skeptics, including former Alaska Gov. Sarah Palin, saying they "confuse the public." Chutzpah has been...

Odd things are going on at the Climate Research Unit at the University of East Anglia. Widely available data, existing in the public view for years, is now disappearing from public view. For example this link to Keith Briffa’s Yamal data: Keith Briffa’s Yamal data

Al Gore and other anthropogenic global warming believers claim the Climategate emails are taken out of context. Steve McIntyre at Climate Audit has blogged an excellent article that puts the Climategate "Hide the decline" email in context and it doesn't help the AGW position. In a nutshell, the IPCC wanted to use the historical proxy temperature change data in their Third Assessment Report, but they were concerned about the chart showing the wrong message since it declined in the late twentieth century. A proxy diagram of temperature change is a clear favourite for the Policy Makers summary. But the current...

Beginning in 2003, I worked with Stephen McIntyre to replicate a famous result in paleoclimatology known as the Hockey Stick graph. Developed by a U.S. climatologist named Michael Mann... ...Steve and I showed that the mathematics behind the Mann Hockey Stick were badly flawed, such that its shape was determined by suspect bristlecone tree ring data. ...a series of other studies published since 1998 had similar shapes, thus providing support for the view that the late 20th century is unusually warm. The IPCC also made this argument in its 2007 report. But the second expert panel, led by statistician Edward...

Real climate scientists are sifting out the details of the data to which CRU director and warmist Phil Jones applied fellow warmist Michael Mann's ‘Nature trick…to hide the decline…’. The hidden data is that of Keith Briffa, a fellow climate scientist (and warmist) at East Anglia. Briffa compiled tree-ring data to obtain global temperature estimates back to 1400. But there was a problem with the tree-ring data, from the warmist perspective. The tree ring data showed pronounced cooling beginning in the mid-20th century. This was at variance with some ground temperature measurements (so we are told- the actual raw...

Both Steve McIntyre and I are mentioned in this comprehensive summary. I’ve posted some excerpts below, with a link to the full report in PDF form. It is well worth a read. – Anthony Cold facts about the hot topic of global temperature change after the Climategate scandal THE WHISTLE BLOWS FOR TRUTH The whistleblower deep in the basement of one of the ugly, modern tower-blocks of the dismal, windswept University of East Anglia could scarcely have timed it better. In less than three weeks, the world’s governing class – its classe politique – would meet in Copenhagen, Denmark, to...

Junk Science: Hacked e-mails from Britain's Climate Research Unit are only the latest evidence of climate fraud. Just ask NASA's James Hansen about the faking of climate data or EPA employees about the suppression of climate fact. For years, noted scientists and other global warming skeptics have been accused of being on the take, their research tainted and funded by grants from Big Oil and other fossil-fuel interests. Now, it turns out, it's the warm-mongers who are fudging the numbers and concealing the inconvenient truth. We don't know who "Deep Throat" is. But according to an interview in Investigate Magazine's...

A fascinating, hot-off-the-presses story emerges from the emails that were hacked yesterday from the University of East Anglia's Hadley Climatic Research Centre. It is one of many exchanges that shed light on the priority that the global warming alarmists give to politics and career advancement over science. The story began when Steve McIntyre, the same researcher who was largely responsible for destroying Michael Mann's "hockey stick" graph purporting to show unprecedented warming in the 20th century, turned his attention to a famous article published by Keith Briffa of East Anglia's CRU in 2000. This article analyzed the diameters of tree...