Claims now proven false include;
•an increase in CO2 precedes a temperature increase;
•current atmospheric levels of CO2 are the highest on record;
•and pre-industrial levels of CO2 were approximately 100 parts ppm lower than the present 385 ppm.
The last claim is basic to the argument that humans are causing warming and climate change by increasing the levels of atmospheric CO2.
In a paper submitted to a US Senate Committee on Commerce, Science, and Transportation hearing Professor Zbigniew Jaworowski explains,“The basis of most of the IPCC conclusions on anthropogenic causes and on projections of climatic change is the assumption of low level of CO2 in the pre-industrial atmosphere. This assumption, based on glaciological studies, is false.” This means more when you know that Tom Wigley, who is the heart of the CRU gang, introduced the 280 ppm number to the climate science community with a 1983 paper titled, “The pre-industrial carbon dioxide level.” (Climatic Change 5, 315-320). He based his work on studies by G. S. Callendar (1938) of thousands of direct measures of atmospheric CO2 beginning in 1812. Callendar rejected most of the records, including 69% of the 19th century records and only selected records that established 280 ppm as the pre-industrial level. Here’s a plot of the records with Callendar’s selections circled.
