Carbon Dioxide Control Knob Discussion V


Greg Tomlinson and I have been discussing in comments a blog post from last April:

Global warming XIII – The Carbon Dioxide Control Knob . I think that his comments and my replies will be informative to our readers, who aren’t likely to notice items from six months ago. Therefore, I’m going to create new blog posts each of which contains a comment and a reply with titles The Carbon Dioxide Control Knob I, II, III, and so on.

Here’s the fifth:

October 7, 2017 at 3:19 am Edit

I’m afraid there is strong evidence that most of your statements in this comment are based on “corrected” (ie. falsified) temperature data. Several indisputable facts point in that direction. As you probably remember, NOAA presented a paper by Thomas R. Karl et. al. in 2015 which basically rewrote the entire temperature record from 1880 onward, allegedly to help eliminate data “biases”. On several occasions, NASA did similar doctoring of their data. How can they possibly know if their adjusted data in any more accurate that the original readings taken over 100 years ago? Nowadays, however, you can’t go to the NOAA or NASA websites and pull up data for the year 1995 and expect to get actual measurements taken in 1995. Instead, you will get “corrected” data that was probably calculated sometime after 2010. If you want 1995 data taken in 1995, you will need to go the NASA archives, assuming they still exist. Since most climate researchers are not aware of this, they use the currently posted NASA and NOAA data without question. If you ask them “Where is the data that convinced the IPCC we are in a warming hiatus?”, they will probably respond with “WHAT warming hiatus?” since the new “corrected” data eliminates all level and downward temperature trends. Unfortunately, our government agencies have become extremely deceitful in this manner. Is this any way to do science?

Suppose one of your graduate students gathered data for his/her thesis, and then “corrected” that data to fit the original hypothesis. Would you or your university accept that thesis? If not, then please don’t expect me, the Trump administration, nor the American people in general to buy these NASA/NOAA arguments when they would most likely be used to justify economy destroying carbon taxes and regulations.

Greg Tomilinson

Mr. Tomlinson,

You are thoroughly informed about global warming denier debating points. Unfortunately, these arguments or assertions are misleading or mistaken. Your argument also falsely impugns the integrity not just of the climate scientists involved, but of the scientific enterprise.

NOAA, NASA, and the British Hadley group do not “doctor” their data. They all adjust and correct it however. You can read a description of what they do here:

No climate conspiracy: NOAA temperature adjustments bring data closer to pristine

This is written by a climate scientist involved in the research and published in the Guardian.

Thorough, not thoroughly fabricated: The truth about global temperature data: How thermometer and satellite data is adjusted and why it must be done.

This is written by a scientist who is also a science journalist.


Explainer: How data adjustments affect global temperature records.

This one is written by one of the climate scientists involved in the global temperature research.

You are correct that the scientists go back to the original raw data records and recalculate corrections as more data become available. The corrected data sets are labeled, for example, HADCRUT1, HADCRUT2, and so on.

You are mistaken that climate scientists are unaware of this, and you are mistaken that the original raw data sets are not available. Here you can find the raw data that researchers used to produce HADCRUT4. The raw data for the NASA and NOAA datasets are also available and easy to find.

The new corrected data does not “eliminate all level and downward temperature trends.” Indeed, comparing a century’s data, the corrected data reduces the warming between the first half of the 20th century and the second half. Here’s the data for you to see for yourself.

“The figure below shows the global surface temperature record created from only raw temperature readings with no adjustments applied (blue line). The red line is the adjusted land and ocean temperature record produced using adjusted data from the US National Oceanic and Atmospheric Administration (NOAA), with the difference between the two in grey.” This is from the third link above.

Neither our government agencies nor the world’s academic climate researchers have been deceitful. Their methods and data have been and are open for all to review in the best traditions of the scientific enterprise.

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