A report on ScienceDaily.com says new research published in Geophysical Research Letters has found that the airborne fraction of carbon dioxide has not increased during the past 160 years or during the last five decades.
The new research also found that most carbon dioxide emiited by human activity does not remain in the atmosphere. It is instead absorbed by the oceans and terrestrial ecosystems. The findings reportedly show that only about 45 percent of emitted carbon dioxide stays in the atmosphere.
Many scientists researching the Anthropogenic Global Warming theory use climate models that assume the airborne fraction will increase. If it is not increasing then those climate models could render false data. In order to learn whether the airborne fraction was actually increasing, Wolfgang Knorr of the Department of Earth Sciences at the University of Bristol reanalyzed available atmospheric carbon dioxide and emissions data since 1850.
Understanding of the airborne fraction of carbon dioxide seems essential in predicting any possible future climate change. Having accurate knowledge of whether that fraction is changing, or will change as emissions increase, would also appear to be necessary in order to make accurate predictions.
Are scientists claiming that increased levels of atmospheric carbon dioxide are causing a rise in temperatures now faced with the possibilty that their research is fundamentally flawed? If the airborne fraction of carbon dioxide has not increased in 160 years that could show that human activity has had little or no effect on temperatures.