“Faulty” low readings? Delete them.
Faulty high readings? Keep them!
These meters are designed to read from -100°C to +200°C. Why drop any readings that fall below -10°C?
Australian scientists at the Bureau of Meteorology (BOM) ordered a review of temperature recording instruments after the government agency was caught tampering with temperature logs in several locations.
Agency officials admit that the problem with instruments recording low temperatures likely happened in several locations throughout Australia, but they refuse to admit to manipulating temperature readings. The BOM located missing logs in Goulburn and the Snow Mountains, both of which are in New South Wales.
Meteorologist Lance Pidgeon watched the 13 degrees Fahrenheit Goulburn recording from July 2 disappear from the bureau’s website. The temperature readings fluctuated briefly and then disappeared from the government’s website.
“The temperature dropped to minus 10 (13 degrees Fahrenheit), stayed there for some time and then it changed to minus 10.4 (14 degrees Fahrenheit) and then it disappeared,” Pidgeon said, adding that he notified scientist Jennifer Marohasy about the problem, who then brought the readings to the attention of the bureau.
The bureau would later restore the original 13 degrees Fahrenheit reading after a brief question and answer session with Marohasy.
“The bureau’s quality control system, designed to filter out spurious low or high values was set at minus 10 minimum for Goulburn which is why the record automatically adjusted,” a bureau spokeswoman told reporters Monday. BOM added that there are limits placed on how low temperatures could go in some very cold areas of the country.
Bureaus Chief Executive Andrew Johnson told Australian Environment Minister Josh Frydenberg that the failure to record the low temperatures at Goulburn in early July was due to faulty equipment. A similar failure wiped out a reading of 13 degrees Fahrenheit at Thredbo Top on July 16, even though temperatures at that station have been recorded as low as 5.54 degrees Fahrenheit.