More Data Manipulation By NOAA, NASA, HadCRUT…Cooling The Past, Warming the Present

Global Temperature Data Manipulation

Thousands Of Non-Urban Thermometers Removed

0.3°C Of Pause-Busting Warmth Added Since 1998

0.5°C Of Warming Removed From 1880-1950 Trend

Over the course of the last few decades, overseers of the 3 main 19th century-to-present global temperature data sets — NOAA, NASA, and HadCRUT — have been successfully transforming the temperature record to the shape dictated by climate models.

Namely, there has been a concerted effort to cool down the past — especially the 1920s to 1940s warm period — and to warm up the more recent decades, especially after about 1950.  In this way, a trend of steep linear warming emerges that looks similar to the linear shape of anthropogenic CO2 emissions for the 20th and 21st centuries.  A better fit between anthropogenic CO2 emissions and surface temperature helps to imply causation, and this ostensible correlation-turned-causation can then be used to justify policy decisions aimed at eliminating fossil fuel energies.

75% Of GHCN Temperature Stations Removed Since 1970s

One of the most unheralded means by which this temperature “shaping” occurs has been the tendentious and wholesale removal of thousands of weather station land thermometers from remote, high altitude, and/or non-urban locations since the 1970s.  These are stations which do not show the warming trends predicted by models, as they are not affected by proximity to artificial or non-climatic heat sources (pavements, buildings, machinery, industry, etc.) like urban weather stations are.  (As detailed below, locating thermometers near urban heat sources can cause warming biases of between 0.1 and 0.4¬∞C per decade.)

If a highly disproportionate number of non-urban weather stations are removed from the global temperature archive, the urban-based thermometers will be weighted much more heavily than they were before the non-urban stations were removed.  And therefore, the temperature record will show (much) more warming — even though the additional warmth is not climatic, but artificial.

And this is exactly what has happened.  The Global Historical Climatology Network, or GHCN, is the primary source for temperature data records from all over the world.  NOAA, NASA, and HadCRUT heavily rely on GHCN for temperature histories in constructing their global data sets dating back to the 1800s.  According to McKitrick (2010), there were still between 5,000 and 6,000 weather stations across the globe contributing to the GHCN temperature archive as recently as the 1970s.  Today (or as of 2009), there are only a little over 1,000 left — 75% of the thermometers used in the 1970s have disappeared.  There are now fewer weather stations contributing to the GHCN than there were in 1919.

Astonishingly, as many as half (49% as of 2009) of the weather stations across the globe used by the GHCN are now located on the (paved) grounds of airports.

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Comments (3)

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    A 75% reduction In weather stations since the 1970.s and NOAA has the nerve to create fake news about potential lost data under a Trump administration ?
    With over 5000 weather stations removed out of approx. 6000 since the 1970″s and vast portions of the world with no land or water based temperature readings at all renders assertions of “record ” temperatures to within a fraction of 1 degree as unscientific fraud . No true scientist can claim they have a sample size , history,
    and methodology that can even come close to accurately calculating the annual earth temperature to within a fraction of 1 degree . If someone says they can then show
    their calculations and all the source data . That’s right dead F’ing silence . They can’t .
    How this massive international fraud got this far is beyond belief . It is an orchestrated con job so big it makes the Nazis take over of Germany look like it was on training wheels .

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      In an agency dedicated to collecting and analyzing information there is no such thing as “lost” key data, especially something as critical and timely as this. NOAA certainly has back-ups on their back-ups to the Cloud… This isn’t the same as some 6th grader who inadvertently deletes a completed theme paper on Word.

      Nothing could speak more clearly to their corruption.

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