Thermometer Magic

Posted: April 15, 2013 by tallbloke in solar system dynamics

Steven Goddard lays out the ‘adjustments’ issue with temperature data in a simple and clear fashion.

Real Science

http://www.thecookinginn.com

Most people probably assume that measuring the US temperature is as simple as this. And perhaps it should be.

Prior to the year 2000, the GISS US temperature graph appeared as below. Note that 1998 was more than half a degree C (almost 1ºF) cooler than 1934.

In the year 2000, they switched places. 1998 became warmer than 1934. How did this magic occur?

View original post 176 more words

Comments
  1. Kon Dealer says:

    Not magic, just fraud. Plain and simple.

  2. J Martin says:

    Once the World has put the global warming co2 nonsense behind them, hopefully some of the warmists co2 ‘magic’ tricks will be investigated by the sort of authorities that can lead to jail sentences for warmists.

  3. KuhnKat says:

    The final link to NP019 is no longer active. Here are a couple of links that may be close enough:

    http://sustainableoregon.com/webpages/ndp019.html

    http://cdiac.ornl.gov/ftp/ndp019/

    And to the current sites:

    http://cdiac.ornl.gov/epubs/ndp/ushcn/ushcn.html
    http://cdiac.esd.ornl.gov/r3d/ushcn/ushcn.html

    They tend to “forget” about or bury the original papers and why and how the adjustments were supposed to be done over time. Basically, even if the adjustments were appropriate for the stations they surveyed, creating routines that indiscriminately applied them to a wide range of stations is simply not supported.

  4. donald penman says:

    There comes a time when we have to decide if it is possible to have a thermometer record which can be compared over time .If all the corrections to the data are finished and our temperature recording today is perfect then we should be able to start from today and have a perfect record of temperature but I think it is unlikely that they will ever stop adjusting data now that they have started so lets just give up on the idea of constructing a thermometer time series and stick to things that don’t need adjusting constantly such as rainfall totals.It seems that we will never get this thermometer reading business right.

  5. Sleepalot says:

    I’ve been comparing Met Office and CRUtem3 figures: sometimes they’re the same;
    Sheffield
    Sheffield - uses Met Office data
    (but CRUtem wipes out 30 years of values)

    and often they’re very different;
    Stornoway
    Stornoway B -uses Met Office data

    Eskdalemuir
    Eskdalemuir - uses Met Office data.

    Ross on Wye
    Ross - uses Met Office data

    Bournemouth-Hurn
    BournemouthHurne - uses Met Office data

    Waddington
    Waddington - uses MetOffice data

    Wick – this time the differences have a shape
    Wick B uses Met Office data

    Manchester Ringway this time the data are shifted in time
    Ringway A - uses Met Office data
    Ringway B - uses Met Office data

    … but I can’t do anything with this – I’m just a “Joe Public”.