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Global warming: oops, we lost the data
The world's source for global temperature record admits it's lost or destroyed all the original data that would allow a third party to construct a global temperature record. The destruction (or loss) of the data comes at a convenient time for the Climatic Research Unit (CRU) in East Anglia - permitting it to snub FoIA requests to see the data....

...In 2007, in response to Freedom of Information Act requests, CRU initially said it didn't have to fulfil the requests because "Information accessible to applicant via other means Some information is publicly available on external websites".

Now it's citing confidentiality agreements with Denmark, Spain, Bahrain and our own Mystic Met Office. Others may exist, CRU says in a statement, but it might have lost them because it moved offices. Or they were made verbally, and nobody at CRU wrote them down.

As for the raw station data,

"We are not in a position to supply data for a particular country not covered by the example agreements referred to earlier, as we have never had sufficient resources to keep track of the exact source of each individual monthly value. Since the 1980s, we have merged the data we have received into existing series or begun new ones, so it is impossible to say if all stations within a particular country or if all of an individual record should be freely available. Data storage availability in the 1980s meant that we were not able to keep the multiple sources for some sites, only the station series after adjustment for homogeneity issues. We, therefore, do not hold the original raw data but only the value-added (i.e. quality controlled and homogenized) data."

Canadian statistician and blogger Steve McIntyre, who has been asking for the data set for years, says he isn't impressed (http://www.climateaudit.org/?p=6789#comments) by the excuses. McIntyre obtained raw data when it was accidentally left on an FTP server last month. Since then, CRU has battened down the hatches (http://www.climateaudit.org/?p=6673), and purged its FTP directories lest any more raw data escapes and falls into the wrong hands....