Thursday, October 23, 2014

Claim: All global warming since 1940 is due to artificial "processing" of data, not found in raw data

"If you torture the data long enough, it will confess." -Ronald Harry Coase 

From the WUWT post "Weather Channel Founder John Coleman: There is no significant man-made global warming at this time," a comment and link demonstrates that all of the alleged global warming including average, minimum, and maximum surface temperature anomalies since 1940 is due to the artificial "processing" of data, and not found in the raw data:
"Taken together a couple of things are clear, for most of the world there was no trend in minimum temperature when CO2 increases became significant, and then in the early 70’s most of the planet experienced a significant drop in minimum temperature, followed by a slow recovery."

    • OldDude commented
      I haven’t seen this before. Can you point me to a url or paper explaining the data? Thanks
      Follow the URL in my name for code and data, I have more of a description here
      It has evolved over time, but for the most part it’s been tightening up the data selection to have better control over whether partial year stations are included or not.

  • Thom commented
    Micro: Surface temperature of what (US/World?). Also link so I can post. Thanks.
    95 million surface station records, from around the globe, from the NCDC Global Summary of Days dataset.
    This graph is fresh from this morning where I added average temps to min and max. For this, just right click and copy url link, the data (previous version without average temps) at the url in my name, and you can follow the science 2.0 link for more wordy stuff.
  • milodonharlani commented
    Before or after adjustments?
    NCDC says here they do some QA
    As for quality control (QC), the input data undergo extensive
    automated QC to correctly ‘decode’ as much of the synoptic data as
    possible, and to eliminate many of the random errors found in the
    original data. Then, these data are QC’ed further as the summary of
    day data are derived. However, we expect that a very small % of the
    errors will remain in the summary of day data.
    I have found some bad temps that I filter out (above and below 199F/-199F, so I presume they are actually bad). I do no adjustments.

above comments from the WUWT post:

Weather Channel Founder John Coleman: There is no significant man-made global warming at this time

johncoleman_TWCJohn Coleman, the founder of Weather Channel, has written an open letter, in which he claims the theory of anthropogenic climate change is no longer scientifically credible. So far The Express, a major British newspaper, and the American news service WND, have provided favorable coverage of the letter. The Express article has also been linked to by the Drudge Report, giving it wide exposure. The full text of the letter is as follows:
Dear UCLA Hammer Forum officials,
There is no significant man-made global warming at this time, there has been none in the past and there is no reason to fear any in the future. Efforts to prove the theory that carbon dioxide is a significant “greenhouse” gas and pollutant causing significant warming or weather effects have failed. There has been no warming over 18 years. William Happer, Ph.D., Princeton University, Richard Lindzen, Ph.D., Massachusetts Institute of Technology, Willie Soon, Ph.D., Harvard Smithsonian Observatory, John Christy, Ph.D., University of Alabama and 9,000 other Ph.D. scientists all agree with my opening two sentences.
remainder at WUWT

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