Posted BY: | NwoReport
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.
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Electronic temperature 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 skeptical 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 35C, she continued, adding, “There are many cherries to be picked here”.