William Connolley at RealClimate provides a useful summary of the scientific consensus on global warming. He notes
That the increase in atmospheric CO2 is anthropogenic is so obvious that few people question it
Of course, Louis Hissink is one of those few people, insisting that the evidence isn’t just wrong, but is fraudulent. (I’ve added the green and red lines to the graph he presents—I’ll explain what they are below.)
So far not one scintilla of evidence has been produced to counter the scientific evidence graphed in Figure 2 from Jaworowski’s submission to the US Senate in March 2004.
It basically refutes the lie that CO2 levels have been constant at a level of 270 ppmv for the last 10,000 years.
However, if you examine Jaworowski’s graph, it is clear that most of the CO2 measurements shown on the graph are inaccurate. The measurements for 1865, for example, vary from 290 to 550 parts per million. It just isn’t possible for the CO2 concentration to change by that much in one year—the difference corresponds to about 500 billion tons of carbon which is about the same amount of carbon in all plants in the entire world. The red line I added shows the measurements of CO2 concentration taken at Mauna Loa since 1958. Notice how there are no huge year-to-year fluctuations.
So given that many of the measurements are wrong, it makes no sense to average them as Jaworowski suggests should be done. The correct procedure is discard the inaccurate measurements. Callendar discarded (Tellus X (1958 p 244):
(a) Period mean values 10% or more different from the general average of the time and region.
(b) Air samples taken in towns, because these often give 5 to 20% more CO2 than uncontaminated air.
(c) Averages depending on only a few samples, or made within a short period, because real fluctuations may exceed 10% in such cases.
(d) Measurements intended for special purposes such as biological, soil air, atmospheric pollution, etc
Jaworowski claims that rather that selecting the most accurate values, Callendar made an arbitrary selection to produce the result (increasing CO2) that he desired. Jaworowski has not a scrap of evidence for his claim and all other data supports Callendar. The green line shows measurements of CO2 concentration from ice cores at Law Dome. Notice how it agrees with the values Callendar chose and the red line of the Mauna Loa measurements. Jaworowski has an answer to this. The ice core measurements are fraudulent, as are the Mauna Loa measurements. Multiple independent ice core measurements agree with those from the Law Dome, so presumably Jaworowski believes that these are the product of a huge conspiracy as well. It should come as no surprise that Jaworowski’s theories were not published in a scientific journal, but in 21st Century, a magazine published by Lyndon LaRouche, renowned for his belief in various conspiracy theories.