The effect of two adjustments on the climate record

kenskingdom

The warming bias in Australia’s ACORN-SAT maximum dataset is largely due to just two adjustments.

Last week’s Report of the Technical Advisory Forum’s review of the ACORN-SAT temperature reconstruction produced some rather bland, motherhood type statements.  However, hidden in the public service speak was a distinct message for the Bureau of Meteorology: lift your game.  Two of the areas I have been interested in are (a) whether individual adjustments are justified, and (b) the effect of these adjustments on national and regional temperature trends.  In this post I look at adjustments at just two sites, which are responsible for the single largest increase in national trend.

On page 17 of the Report we find the following graphic:

Fig. 1: Scatterplot of difference between AWAP and Acorn annual mean temperature anomalies.

scatterplot awap acorn mean diff

This is a clear statement of how much Acorn adjustments have cooled past temperatures, as AWAP is regarded as being…

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The Future Isn’t Ours to Dictate

Big Picture News, Informed Analysis

It is not the business of today’s politicians to decide which energy sources will be used 85 years from now.

candlestick_phoneclick for photo source

In 1930, horse-drawn wagons were still common. That year, the first traffic lights were installed in New York City, and the first East-West crossing of the Atlantic took place via airplane. Vaccines for illness such as diphtheria, tetanus, cholera, typhoid, and tuberculosis were yet to be discovered. This was a world without television, without computers, and in which telephones were definitely not portable.

How ridiculous would it have been for political leaders back in 1930 to decide how we, here in 2015, should live? In an era before large hydro electric dams and nuclear reactors, how sensible would it have been for US President Herbert Hoover, British PM Ramsay MacDonald, and German Chancellor Heinrich Brüning to decide what energy sources societies should rely on…

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