The disease is spreading.
Another BOM scandal: Australian climate data is being destroyed as routine practice
Historic climate data is being destroyed
The Bureau have a budget of a million dollars a day, but seemingly can’t afford an extra memory stick to save historic scientific data.
In the mid 1990s thermometers changed right across Australia — new electronic sensors were installed nearly everywhere. Known as automatic weather sensors (AWS) these are quite different to the old “liquid in glass” type. The electronic ones can pick up very short bursts of heat – so they can measure extremes of temperatures that the old mercury or liquid thermometers would not pick up, unless the spike of heat lasted for a few minutes. It is difficult (impossible) to believe that across the whole temperature range that these two different instruments would always behave in the exact same way. There could easily be an artificial warming trend generated by this change (
see the step change in the graphs). The only way to compare the old and new types of thermometer is to run side by side comparisons in the field and at many sites. Which is exactly what the bureau were doing, but the data has never been put in an archive, or has been destroyed. It’s not easily available (or possibly “at all”). We have this in writing after an FOI application by Dr Bill Johnston (see below).
These measurements from past years can never be re-recorded. A
four-terabyte external hard drive costs a couple of hundred dollars and would probably store a whole years worth of text files. For just 0.02% of their budget they could buy one every day. Why, why, why wouldn’t a scientist who cared about the climate want to save this information?
The two different thermometers sit side-by-side in a Stevenson Screen, this example is at Wagga Wagga airport, NSW. Photo: Bill Johnston.
Dr Bill Johnston put in an FOI request for side-by-side data from both kinds of thermometer. He asked for six months of data from Sydney and Canberra Airports and was told it would cost him $460. That’s quite a barrier, and that was only to access the Sydney records. Look at what happened to the Canberra ones — the data was gone. No one could analyze it, no matter how much they were willing to pay.
Field books “disposed”?
….
The BOM stated that “in accordance with records management practices”, the field books for early 2013 at Canberra Airport were “disposed of” twelve months after the observations were taken. By mid 2014 the situation was even worse (if that were possible). The more recent Canberra Airport records didn’t even
have field books to be destroyed. There were no records to be disposed of. . . .
