Australian scientists with the Bureau of Meteorology have been accused of manipulating the country’s temperature record to make it seem it’s gotten warmer over the decades, The Australian newspaper reports.
Dr. Jennifer Marohasey claims the BOM’s adjusted temperature records are “propaganda” and not science, according to the Australian. Marohasey said she analyzed raw temperature data from places across Australia and compared them to BOM data.
The result: the BOM’s adjusted data creates an artificial warming trend. Marohasey said BOM adjustments changed Aussie temperature records from a slight cooling trend to one of “dramatic warming” over the past century.
BOM disagreed with Marohasey and told the Australian that the agency “used world’s best practice and a peer reviewed process to modify the physical temperature records that had been recorded at weather stations across the country.”
The process used by the BOM is called “homogenization” which corrects for anomalies in the raw temperature data. The agency said it was “very unlikely” that “data homogenisation impacted on the empirical outlooks.”
“All of these elements are subject to change over a period of 100 years, and such non-climate related changes need to be accounted for in the data for reliable analysis and monitoring of trends,” the BOM told the Australian.
But Marohasey said she found instances where the BOM made “no change in instrumentation or siting and no inconsistency with nearby stations” but added there was a “dramatic change in temperature trend towards warming after homogenisation.”
Marohasey is not the first to find inconsistencies between raw temperature records and “homogenized” data.
Climate blogger Steven Goddard has criticized U.S. government scientists for manipulating the raw temperature record to show a rapidly warming trend.
“Goddard shows how, in recent years, NOAA’s US Historical Climatology Network (USHCN) has been ‘adjusting’ its record by replacing real temperatures with data ‘fabricated’ by computer models,” writes Christopher Booker for the Telegraph.
“The effect of this has been to downgrade earlier temperatures and to exaggerate those from recent decades, to give the impression that the Earth has been warming up much more than is justified by the actual data,” Booker writes. “In several posts headed ‘Data tampering at USHCN/GISS,’ Goddard compares the currently published temperature graphs with those based only on temperatures measured at the time.”
“These show that the US has actually been cooling since the Thirties, the hottest decade on record; whereas the latest graph, nearly half of it based on ‘fabricated’ data, shows it to have been warming at a rate equivalent to more than 3 degrees centigrade per century,” Booker adds.
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