USHCN : Cheating The Past In Death Valley

In 1922, the US Weather Bureau reported that the July 1917  mean temperature in Death Valley was 107.2 degrees.

docs.lib.noaa.gov/rescue/mwr/050/mwr-050-01-0010.pdf

USHCN now reports the mean temperature of July 1917 as 106.6.  They knocked more than half a degree off the measured temperatures.

U.S. Historical Climatology Network

Another interesting month is July 1913. The Weather Bureau reported that during the week of July 8-14, high temperatures averaged nearly 130 degrees.

USHCN reports that the average high temperature for July 1913 was only 113.6. The rest of the month must have been very cold to drag the average down that far.

But it is worse than it seems. USHCN knocked about three degrees off all measured maximum temperatures from 1911 through 1914.

The station at Death Valley was excellently sited and carefully monitored during that period, much better than most of the USHCN stations today. What is the USHCN rationale for this spectacular data tampering?

The US Weather Bureau wrote this in 1907.

docs.lib.noaa.gov/rescue/mwr/035/mwr-035-01-0007b.pdf

Apparently Hansen and Karl aren’t the first people to tamper with weather data.

About Tony Heller

Just having fun
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5 Responses to USHCN : Cheating The Past In Death Valley

  1. Mike Bromley the Canucklehead says:

    Note the regular and arbitrary pattern of adjustments on the USHCN graph….WTF?? Interesting….and lazy….way to play god.

    • John B., M.D. says:

      Early spring temps seem to be adjusted downward the most.
      Was something wrong with the thermometers then?

  2. Andy DC says:

    The temperature data from 100 years ago was “agenda free” and thus far more reliable than the data from today. The Greenland Ranch site in 1913 stands in stark contrast to many weather station sites today, set in highly developed asphalt jungles of runways, parking areas and buildings without a living plant to be found for a mile around. Not to mention jet exhaust.

  3. Flat out lies by people PAID to be honest.. give us an honest assessment…

    Yep, Death Valley was closely monitored… yet they altered the data.. why?

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