As mentioned in the prior post The Other Hockey Stick - CO2 Levels, the average age of CO2 in ice cores was arbitrarily decreed to be exactly 83 years younger than the ice in which it was trapped. By instead setting the age of CO2 in ice cores to the same age as the surrounding ice, and eliminating noise due to temperature changes (which affect CO2 solubility & using ice core deuterium proxy), the corrected ice core data shows the current CO2 level to be only ~7% higher than the pre-industrial level:
compare this to the CO2 hockey stick (note time scale is in the opposite direction) in the Obama Administration Report "Global Climate Change Impacts on the United States," which claims ice core CO2 never exceeded 300 ppm (above analysis is above 300 ppm throughout the entire record) and that we are currently at CO2 levels 35% higher than pre-industrial levels. It predicts at least doubling to almost tripling of CO2 levels by 2100. Furthermore, see the recent post showing that at the rate of CO2 increase measured over the past 30 years, CO2 levels would not double until 2244.
- CO2 released into the atmosphere by natural processes results in 97% of the CO2 concentration in the atmosphere, vs. 3% for man-made emissions.
from Mauna Loa. The age of the gas recovered from 1 to 10 grams of ice was arbitrarily decreed to be exactly 83 years younger than the ice in which it was trapped! And so we got corelation! Check out this site http://www.21stcenturysciencetech.com/Articles%202007/20_1-2_CO2_Scandal.pdf
To support the AGW hypothesis, IPCC scientists also dismissed all chemical measures of CO2 which were accurate within 3%.