Settled Science: New paper 'challenges consensus about what regulates atmospheric CO2 from year to year'

A new paper published in Nature "challenges the current consensus about what regulates atmospheric CO2 from year to year" and finds "semi-arid ecosystems in the Southern Hemisphere may be largely responsible for changes in global concentrations of atmospheric CO2."

The authors find links between the land CO2 sink in these semi-arid ecosystems "are currently missing from many major climate models." In addition, they find that land sinks for CO2 are keeping up with the increase in CO2 emissions, thus modeled projections of exponential increases of CO2 in the future are likely exaggerated. 

The paper joins many other papers published over the past 2 years overturning the "settled science" of the global carbon cycle.