Jennifer Marohasy

a forum for the discussion of issues concerning the natural environment

Vincent Gray

Guessing versus Calculating a Global Mean Temperature

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“THE greatest difficulty facing the promoters of the theory that human emissions of carbon dioxide cause dangerous global warming is the inconvenient truth that it is impossible to measure the average temperature of the earth’s surface by any known technology. Without this information it is not possible to claim global warming” writes Vincent Gray in his most recent ‘Truth Newsletter’.

The newsletter continues with an explanation of how a mean global surface temperature anomaly was calculated, and then switches to compare output from General Circulation Models (GCMs) with an all together different method of calculating a global mean temperature using microwave sounders…

“In order to fake this claim the Mean Global Surface Temperature Anomaly Record
(MGSTAR) was fabricated from temperature measurements made at meteorological weather
stations.

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Volcanic Eruptions and Global Temperature

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VOLCANIC eruptions have long been known to influence global climate, besides their obvious local effects. They emit large clouds of aerosols and sulphur-containing gases into the lower and upper atmospheres, affecting albedo, cloud formation and causing optical phenomena. They also cause widespread oceanic disturbance (tsunamis) which can destroy settlements large distances from the eruption.  Although there is now conclusive evidence from the satellite record of temperature effects from volcanic eruptions and from ENSO, there is, so far, no evidence of global warming from an increase in greenhouse gases.

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The Absurdity of a Reliable Average Global Surface Temperature

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ACCURATELY recording the temperature of a body that is not in equilibrium can be complicated.  Recording the average surface temperature of the earth reliably, and with such accuracy that one can know with certainty that there has been a less than one degree Celsius change over one hundred years, probably impossible. 

Dr Vincent Gray explains why, and begins at the very beginning with an explanation of “temperature” and how it is measured:

TEMPERATURE is one of the six basic units of the SI (Metric) system, but is the least understood  and most mysterious of all of them.

It originally arose as a method of assessing heat level, which could be measured by the change in length of a liquid inside a glass capillary. The scale was divided into a number of equal units between “fixed” points.

In 1724, Daniel Gabriel Fahrenheit chose three fixed points. Zero was the temperature of a mixture of ice, water and ammonium chloride, which he considered to represent the lowest possible temperature on the earth’s surface (he was wrong). Then he chose the melting point of ice as 32 degrees, which meant the boiling point of water was 212 degrees. It is amazing that this cumbersome and inconvenient system survived for so long, and is still used in the USA.

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