https://mobile.twitter.com/FamedCelebrity/status/1491533594983993347
William M Briggs
@FamedCelebrity
My friends have published a new paper which proves that He Who Controls The Data Creates The Science. https://mdpi.com/2073-4433/13/2/285…
Short thread of an email from one of the authors, showing how global warming can be created by statistics.
Whole thread below is quote.
In this paper…we looked at the various "temperature homogenization adjustments" that have been applied to the European temperature records in the widely used "Global Historical Climatology Network" (GHCN) dataset over the last 10 years.
The GHCN dataset is the main data source for thermometer records used by several of the groups calculating "global warming" - including NOAA, NASA Goddard Institute and the Japan Meteorological Agency.
Because these thermometer records typically are several decades to centuries long, they often are contaminated by "non-climatic biases" whenever the weather station undergoes a major change, such as being moved to a new location or a change in the type of instruments used.
In an attempt to try to correct for these non-climatic biases, NOAA, the group in charge of the GHCN dataset had been running a computer program to try and statistically identify "non-climatic jumps" in the records by comparing each station record to -
40 of its nearest neighbours. This process is called "temperature homogenization", and until now, most groups had been assuming the process was working correctly.
However, for this study, we analysed 10 years of different "homogenization adjustments" applied by NOAA -
to more than 800 European temperature records. We found that the adjustments NOAA was applying to each station record changed dramatically every time they re-ran their homogenization computer program! And they have been re-running this program almost every day since 2011.
We found that only 16% of the adjustments NOAA had been applying to the thermometer records were consistent from run to run.
Moreover, by compiling the "station history metadata" associated with each of the stations we analysed from the various national meteorological services and other scientific studies, we were able to compare the adjustments applied by NOAA to the documented station changes -
that were known to have occurred. We found that less than 20% of the adjustments NOAA had been applying corresponded to any event noted by the station observers - such as a change in instrumentation, station move, etc.
The findings of our study suggest that many of the "homogenization adjustments" that have been applied to the main thermometer records used for studying climate change over the last 10 years may have been spurious.
END QUOTE - BACK TO BRIGGS
I do not agree with homogenization. It fails for a number of reasons, too many to list here.
However, I have this handy series showing its faults, weaknesses, and cautions.
Gist: scientists are far too certain of themselves.
https://www.mdpi.com/2073-4433/13/2/285