Lacking the resources to quickly check the entirety of the BoM claim, I checked Alice Springs data – being at the core of our hot land.
The tenuous BoM claim comes crashing to earth so quickly – in the 1990-1999 decade. The average mean annual temperature in the Alice for the decade 2000 to 2009 is 21.441 degrees C. Then the average for the next decade – 1990 to 1999 is 21.645.
And yes their claim also fails in the 1880’s.
My graphic shows the 21.645 peak at 1999 (= ten year average for years 1990-1999)
Poor old BoM – a gaping hole shot so quickly in their beautiful construction – I wonder how many tax payers hard earned dollars the BoM wastes on these sorts of politically correct but unproductive exercises – at a time they find it too hard to gather complete rainfall data at many sites.
I will run more checks as global datasets are updated to the end of 2009.
A few words about what I think would be balanced statements to make about 2000-2009 climate in Australia. Of course it has been a hot decade but I doubt it is significantly warmer in a statistical sense to earlier times, including the late 19th Century – which the BoM cunningly try to exclude. IMHO 2000-2009 could be said to be “well within the normal range for Australian decadal natural temperature variations”.
Get monthly mean max and mean min data from this link