CRU did destroy a lot of critical data. After the FOA order from Parliament, Jones and the frauds of CRU started destroying evidence.
How much is hard to say, they wiped disk arrays and emails.
{ Can you delete any emails you may have had with Keith re AR4?
Keith will do likewise. Hes not in at the moment minor family crisis.
Can you also email Gene and get him to do the same? I dont have his new email address.
We will be getting Caspar to do likewise.} - Phil Jones, directing that data requested by the House of Commons be destroyed.
They destroyed personal e-mails, not data. They did not have the orginal data, it is kept at the places that it is recorded. Muller used that data for his study.
Global warming study finds no grounds for climate sceptics' concerns | Environment | The Guardian
The world is getting warmer, countering the doubts of climate change sceptics about the validity of some of the scientific evidence, according to the most comprehensive independent review of historical temperature records to date.
Scientists at the University of California, Berkeley, found several key issues that sceptics claim can skew global warming figures had no meaningful effect.
The Berkeley Earth project compiled more than a billion temperature records dating back to the 1800s from 15 sources around the world and found that the average global land temperature has risen by around 1C since the mid-1950s.
This figure agrees with the estimate arrived at by major groups that maintain official records on the world's climate, including Nasa's Goddard Institute for Space Studies in New York, the US National Oceanic and Atmospheric Administration (Noaa), and the Met Office's Hadley Centre, with the University of East Anglia, in the UK.
"My hope is that this will win over those people who are properly sceptical," Richard Muller, a physicist and head of the project, said.
"Some people lump the properly sceptical in with the deniers and that makes it easy to dismiss them, because the deniers pay no attention to science. But there have been people out there who have raised legitimate issues."
Muller sought to cool the debate over climate change by creating the largest open database of temperature records, with the aim of producing a transparent and independent assessment of global warming.
The initial reluctance of government groups to release all their methods and data, and the fiasco over emails from the University of East Anglia's Climatic Research Unit in 2009, gave the project added impetus.
The team, which includes Saul Perlmutter, joint winner of this year's Nobel Prize in Physics for the discovery that the universe is expanding at an increasing rate, has submitted four papers to the journal Geophysical Research Letters that describe their work to date.