Making data public for others to analyze is an important part of the scientific process. For example, the release of an updated data set by Berkeley BEST (click here for prior post) is a positive move.
For those interested in getting into the deep weeds with regard to Michael Mann’s book (Click here to see prior post)…I suggest reading this post (click here), where Hu McCulloch responds to the assertions made by Michael Mann. This is certainly an intriguing situation.
If Mann indeed has a private data set as suggested, then there is really no way anyone could verify his analysis. At this point, it looks to me that the ball is firmly in Mann’s court to respond.