Further significant doubts have been cast on the accuracy of global surface temperature results following the discovery that electronic thermometers in Australia have read up to 0.7°C higher than traditional mercury glass units. The Australian dataset is a major component of global compilations since it provides an important guide to one of the largest land masses in the southern hemisphere. After many years of trying, local freedom of information requests from scientists have forced the Australian Bureau of Meteorology (BoM) to release comparative information from the two measuring devices around Brisbane airport. It shows that automatic readings are higher 41% of the time, compared with 32% when the temperatures were the same.
Electronic temperatures devices have been in general use in Australia since 1995. The guidance of the World Meteorological Organisation suggests averaging temperatures over a minute to remove corruptions caused by temporary effects such as a sudden gust of hot air. But the BoM records highs for just a second, something that basic mercury thermometers cannot do. For years, the BoM has refused to release comparative instrument data.
The Australian journalist Jo Nova takes a sceptical view as to why the BoM has been so stubborn. Potentially, the electronic sensors “offer a bonanza of propaganda headlines for the Green Blob to pick from, especially when ‘coldest ever days’ get ignored by the media”. The sensors are offering many more headlines of records for heat, heatwaves, hottest nights, more days over 35°C, she continued, adding, “there are many cherries to be picked here”.
The use of highly sensitive measuring equipment to produce temperature records and hence whip up climate emergency fears is common throughout the world. Last year In the U.K., the Met Office promoted a ‘record’ high of 40.3°C halfway down the runway at RAF Coningsby on the afternoon of July 19th. Admittedly, the record was declared to have stood for longer than a second – 60 seconds to be precise. To this day, the Met Office has refused to answer a number of Daily Sceptic enquiries about possible non-climatic causes of this widely promoted record. In the light of the Australian disclosures, we wonder if the Met Office should re-examine the way it declares heat records and compare the results of its measuring devices with those produced by basic mercury thermometers.
Dr. Jennifer Marohasy analysed the three years of Australian data that was eventually squeezed out of the BoM and found significant differences between the two measuring devises. In the most extreme cases, the modern probe was 0.7°C hotter than the mercury reading. She said it contradicted claims by the Bureau’s director Andrew Johnson that measurements from the two instruments are equivalent. Marohasy estimates the BoM holds data for a total of 38 different locations across Australia. The small Brisbane airport cache is thought to be the first public release of this data.
Read More: Climate Change Scandal in Australia Heating Up