Cenozoic atmospheric CO₂, climate, and climate sensitivity

Over a mere few centuries, human activities may bring atmospheric CO₂ to levels last seen millions to tens of millions of years earlier in the Cenozoic. These major changes in atmospheric CO₂ will have far-reaching impacts on climate, sea level, and ecosystems. We are working to improve indicators for past pCO₂ estimates, and produce new pCO₂ estimates to give a better understanding of the sensitivity of earth’s climate and major ice sheets, to atmospheric CO₂ concentration.