In earlier posts, we observed that Al Gore’s An Inconvenient Truth claimed that “Dr Thompson’s thermometer” confirmed Michael Mann’s hockey stick, but, when analysed, what Gore described as “Dr Thompson’s thermometer” merely proved to be Michael Mann’s hockey stick mis-identified. No wonder it resembled Mann’s hockey stick - or, to use the phrase more common in climate science, no wonder there was a “remarkable” resemblance.

Hu McCulloch of Ohio State University now writes about a recent encounter with Lonnie Thompson, the serial ice core non-archiver: On January 11, Lonnie Thompson gave a talk on Climate change at Ohio State. After his talk, I asked him if the graph identified by Al Gore as “Dr. Thompson’s Thermometer” in his book and film was really based on his ice core research.

Thompson admitted that an error had been made, and even had a slide ready that showed the data of the Mann Hockey Stick plus Jones instrumental data that Gore’s figure was based on, alongside an average of dO18 z-scores from 6 of his Andean and Himalayan ice cores, similar to the 7-series graph that appeared in his 2006 PNAS article. He stated that he recognized the error right away, and even sent Gore (and Mann, as I recall) an e-mail pointing out the mistake.

When I pressed him if it wouldn’t be appropriate to make a more public announcement, given the high-profile nature of the error, Ellen Mosley-Thompson, his wife and co-author, stood up and offered that it was Gore’s error, not theirs, so that they had no responsibility for it, and that in any event there was no forum in which to make a correction. Thompson’s online CV says that he was on the “Science Advisory Board” for Inconvenient Truth prior to its release in April 2006. So he was on the Board but he didn’t bear any responsibility. Sure, Lonnie. Sure, Ellen.

Gore used the term “my friend Lonnie Thompson” and Thompson doesn’t know how to correct the error. Sure, Lonnie.  “No responsibility.” “No forum”. No shame.

Read full blog and comments here.