Enhanced chemistry-climate feedbacks in past greenhouse worlds.

  title={Enhanced chemistry-climate feedbacks in past greenhouse worlds.},
  author={David J Beerling and Andrew Fox and David Stevenson and Paul J Valdes},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  volume={108 24},
Trace greenhouse gases are a fundamentally important component of Earth's global climate system sensitive to global change. However, their concentration in the pre-Pleistocene atmosphere during past warm greenhouse climates is highly uncertain because we lack suitable geochemical or biological proxies. This long-standing issue hinders assessment of their contribution to past global warmth and the equilibrium climate sensitivity of the Earth system (E(ss)) to CO(2). Here we report results from a… CONTINUE READING

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