The lost climate knowledge of Deacon 1952: hot dry summers from 1880-1910
Once upon a time, Australian climate scientists discussed and published climate trends of the late 1800s. And lo, the long lost hot weather decades were apparent in many places in inland South Eastern Australia. While skeptics are accused of cherry picking data from Bourke, Rutherglen and Deniliquin, there are plenty of other examples. In the last post, the 1953 Argus story described hotter drier summers in Omeo, Bendigo, Hay, Bourke, Alice Springs, Echuca, Albury, and Cooma. Here is a Deacon et al peer reviewed graph of the long term trends at Hay, Narrabri, Bourke and Alice Springs.
Thanks to Chris Gillham for finding the Deacon paper of 1952. [On another point, I’ll have a response up to the new BOM “adjustments” page later. In short, their data still has many inexplicable errors like where maxima are lower than minima, and they are still not providing all the details we need to replicate their data and homogenization methods. – Jo]
But just have a look at this graph. Degrees Fahrenheit of course. State of the art, 1952.
These cooling trends cover “only” a couple of million square kilometers of Australia:
The location of Alice Springs, Bourke, Narrabri, and Hay (Click to enlarge)
Imagine, they even had barometric data from 1880 in small country towns of NSW.
There is a lot more data from South East Australia than other parts of the nation. But the CSIRO and BOM don’t seem to be in a hurry to try to calculate the longer trends in those places, where the data is available. There are legitimate reasons why it may be difficult to compare the older trends with the newer data. But it’s a public discussion we need to have. Shouldn’t the Australian public know about all this carefully recorded data, and the very hot summers that happened when CO2 was ideal?