SEARCH BLOG: GLOBAL WARMING
Ever since Steve McIntyre at Climate Audit discovered some egregious errors in NASA's historical temperature database, there seems to be a race between NASA to make on-the-fly data history revisions and Climate Audit, along with many well-qualified reader-participants, to unravel the revisions.
Yesterday, there was a post discussing some changes to the historical data for Detroit Lakes, MN. The noteworthy issue is that the equipment and site have been maintained in a virtually unchanged manner for at least a century. Yet NASA has chosen to lower temperatures at the beginning of the history and raise temperatures at the end as shown in this chart from Steve's post.
Figure 1. Difference between Sep 10, 2007 version of Detroit Lakes MN and Aug 25, 2007 version.Can it be just a coincidence that this particular, well-managed site now has a built-in upward trend of nearly 0.6° C for the last century?
For those of you who really want to strain your brain trying to figure out the logic? used by NASA to get to their new data sets, feel free to click the link near the top of this post. You probably want to go back awhile because this is only one post among many on the issue.
NASA may not be "cooking the books." Maybe just "warming" them a little.The scientific community... and the U.S. government... ought to be closely following [and perhaps participating in] the work being done by Steve McIntyre and the blog commentors. There are more than just reputations at risk here. There are enormously expensive economic and environmental policies that may be based on some numbers that border on fraudulent.
NASA may have good statistical and physical reasons [equipment/site changes] to justify their data revisions. But, so far, it appears that NASA is more interested in hiding the reasons than explaining clearly why they were made. Perhaps because the politics of climate science is now more important than actual climate science?After all, how much money will not be spent if the 0.6° C "global warming" simply hasn't happened?