Breaking news: Bureau of Meteorology to revamp temperature records, Graham Lloyd reports in The Australian.
We’ve seen this all three times before. As soon as skeptics expose enough scandals in The Australian the BOM has to run and hide behind a “major revision”, a panel, or a review. It’s their pass-out-of-class to not answer questions. It’s too late, I have no expectation that this will achieve anything other than being the excuse de jour for the BOM to keep operating as a PR machine rather than a scientific agency.
In the first round back in February 2011, we worked with Cory Bernardi to request a formal audit of the BOM. They had lauded their “High Quality” or HQ dataset, but suddenly it was not good enough and needed revising. In March 2012 the BOM released an entirely new version called ACORN. The formal audit request was thus “neutralized”, but the new set was as bad as the old set. By July 2012, for free, skeptics analyzed and advised the bureau of a string of pathetic flaws, including that the bureau had “created” nearly a thousand days where minimum temperatures were higher than the maxes, the “hottest day ever recorded in Australia” in their hallowed ACORN dataset now occurred in cold Albany after a seven degree shift. The trend in average summer maximums was been tripled by adjustments that the BOM imply are neutral. The adjustments follow an inexplicable monthly whip-saw square wave pattern that defies any reasoning. The independent audit team found gaps and errors, like days where 36.8C was changed to 26.8C (and so many more). The same pattern of mysterious adjustments took data recorded in modern Stevenson screens eighty years ago and “discovered” they needed to be cooled by as much as two degrees, thus turning some raw cooling trends to warming trends and non-randomly increasing the total “averaged” warming rate.
The whole national warming trend from 1910 is supposedly about one degree. But up to two-thirds of Australia’s warming may be due to “adjustments”, not “CO2″. The most cost effective way to stop Australia warming is to dump the BOM and set up a scientific agency instead. It’s a lot cheaper than crippling our electricity grid and destroying our manufacturing base.
Five years after the Wonderbar ACORN dataset was released, none of these errors have been fixed. The BOM never said “thanks for helping”, showed no interest in doing a better job, won’t release either methods or comparison data.Now, lo, in a third round, a few articles in The Australian (and total silence from Fairfax and the ABC) and wouldn’t-you-know but the bureau has suddenly discovered that majorly-revised “best quality” isn’t good enough and they need to aim for doubly-revised ultra-super-HQ. Sure.
Read about the other three rounds of scandal, review, nothing-to-see-here-report by the Australian BOM which runs on a million dollars a day. The situation is so absurd, skeptics are talking of setting up their own recording stations.