Description given on Youtube:
Dr Jennifer Marohasy exposes the data ‘adjustments’ that are endemic at the Goddard Institute of Space Studies (GISS), the Australian Bureau of Meteorology (BOM) and at Berkeley University.
In concert with Dr Jensen, she has asked the BOM to justify their data ‘adjustments’ and have released a paper on the subject.
For some years I have documented how the Australian Bureau of Meteorology remodel historical temperature data in the creation of the ACORN-SAT dataset, so it better fits the theory of human-caused global warming. This winter I have discovered that the Bureau are now placing limits on how cold a temperature can actually be recorded in the ADAM database.
Not far from the peak of Australia’s Mountain Kosciusko, temperatures have been recorded at the Thredbo Top weather station (number 71032) since January 1966. On six separate days in 1968 temperatures dropped to minus 10 or below. On 23rd June 1968 temperatures dropped to minus 11.6. On 28th, 29th and 30th July of that year (1968) temperatures of -10.3, -10.6 and -10.1 were recorded.
During June and July of this year (2017) temperatures may have dropped this low over successive days, but we will never know.
At the beginning of this winter there was a limit placed on how cold a temperature measurement from this (and many other locations) could potentially be recorded. Any temperature measuring less than -10.0 was potentially rounded-up to -10.0, or replaced with a blank. For example, I saw the temperature of -10.4 measured by the Thredbo Top weather station, and then recorded as a blank in the CDO dataset on Sunday 16th July.
The Bureau initially acknowledged it had put these limits in place by way of emails to journalist Graham Lloyd and Griffith businessman Paul Salvestrin. Then it changed its story, claiming in a letter to Minister Josh Frydenberg: equipment failure. During the last week of July, Minister Josh Frydenberg ordered the equipment ‘fixed’. On 2nd August, a minimum temperature of -10.9 was recorded at this Thredbo Top station… as explained by Graham Lloyd in The Australian.
In fact, I have it on good advice that the Minister was told on, or about, 5th July that the ‘smart card reader’ installed into the Thredbo Top weather station limited the potential for low temperature recordings – yet no action was taken for at least three weeks.
On Wednesday 2nd August 2017, the same day that the Thredbo Top weather station was recording a very low minus 10.9, and as some farmers tallied up the exceptionally large number of frosts through July, the Bureau announced that July 2017 was the hottest on record.
http://jennifermarohasy.com/wp-content/uploads/2014/06/Marohasy_Abbot_Stewart_Jensen_2014_06_25_Final.pdf