James Doogue

This is another example of the BOM 'cooling' the past which creates or exaggerates a warming trend.

Changing the data to fit their theory that increased human CO2 emissions are dramatically increasing temperatures.

Lance Pidgeon

In 1913 this Stevenson screen was installed at Kingscote post office on Kangaroo island South Australia.
https://trove.nla.gov.au/newspaper/article/163113972
It was installed on Monday January 13 of 1913 by Mr W. Long, of the Commonwealth Meteorological Department.
https://trove.nla.gov.au/newspaper/article/189505299
The locals thought it was reading too low in 1930 despite the Stevenson screen being the standard way to measure air temperature. After a hot day in February 1930, 107.1 degrees F (41.7 Deg C ) was recorded from it. The locals were not convinced it had gone high enough to represent the area. Not because there was anything wrong with it but for complicated reasons involving the wind direction and the location of the post office.
https://trove.nla.gov.au/newspaper/article/191546765
If that was a record it was beaten at 109.7 degrees F ( 43.2 Deg C) in January 1939.
https://trove.nla.gov.au/newspaper/article/191422321
Now days the "Highest Daily" recorded there at that same location, Kingscote post office site no 022807, has gone down for January from 43.2 Deg C to 40.6. The highest daily maximum for February has gone down from to 41.7 Deg C. to 41.0. They have gone down to match the data available online. The first year of data from it, 1913 is missing from the BoM website. Only monthly not daily data is available for dates prior to 1957.

Those 1930 locals may have been correct. The more recent Kingscote post office January and February temperatures are quite a bit lower than those recorded at the newer BoM Aero site, 022841 for the January and February readings.

Old site Jan 1999 = 23.9, Jan 2000 =24.0, Jan 2001 = 25.5, 2002 22.3.
New site Jan 1999 =26.3, Jan 2000 =25.6, Jan 2001 =28.2, 2002 24.6.
The highest daily temperature recorded at the newer site is as you would expect if the locals were correct in 1930 and the typical difference between the sites is maintained, just 2.2 degrees higher than the old 1930s record at 45.4 degrees C. Less than the average difference for the entire month of January 2001.

Posted by: Timothy Birdnow at 12:13 PM | No Comments | Add Comment
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