By Paul Homewood
Further to yesterday’s post on Minden, Nebraska, I can show the comparison of raw and adjusted temperatures.
Temperatures prior to 1998 have been reduced by 1.7F compared to today’s.
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NOT A LOT OF PEOPLE KNOW THAT 
The differences are more-visually apparent when noting that the lower chart is 47-55F whereas the upper chart is 48-56F
A cynic would say that the change of axis values was a cover-up; however the historical adjustments are massive and either the original data should have been scrapped as erroneous or accepted with estimated error bands.
There is no true physical basis for altering the original data, especially using “humangenised” algorithms that cannot be queried.
COP 21 is getting nearer so the criticisms will not see the light of day.
To be fair, the axes are set automatically (I assume!!)
Everyone knows the old thermometers ran hot and the current ones run cold. sarc/off
Everyone knows temperature data decays with age as well.
It is also interesting to see how they have adjusted temps up from 2000 apart from 2014, which of course was the hottest year evaaaahhh. Instant global warming at the flick of a button.
And even after that massive adjustment, the early 1930’s is still the HOTTEST EVA !!
And of course there is no sigh of cooling from then until the 1970.. none at all 😉
And its the bit after 1998 that looks like its been totally re-manipulated. !
Paul, is there a local USCRN site you can get the temp data from ?
That might be an interesting comparison.
Reblogged this on Climate Collections and commented:
Temperatures prior to 1998 have been reduced by 1.7F compared to today’s.