It appears that scientists will never be able to examine the raw data used to make determinations about earth warming. Here is a quote from the blogger in his post:
“Is this a cruel hoax? Back in the 80’s, when electronic storage was not so cheap and ubiquitous, the major British center for climate research moved to a new building. In a brilliant, forward-looking space saving move they discarded the raw weather data collected from stations all over the world, electing to preserve only the scientifically adjusted "value-added" data.”
Apparently this has been known for sometime, just not covered in the news.