On the feedback of stratospheric clouds on polar climate

  title={On the feedback of stratospheric clouds on polar climate},
  author={Daniel Kirk-Davidoff and Daniel P. Schrag and James G. Anderson},
  journal={Geophysical Research Letters},
Past climates, such as the Eocene (55 ‐ 38 Ma), experienced dramatically warmer polar winters. Global climate models run with Eocene‐like boundary conditions have under‐predicted polar temperatures, a discrepancy which has stimulated a recent hypothesis that polar stratospheric clouds may have been important. We propose that such clouds form in response to higher CO2 via changes in stratospheric circulation and water content. We show that the absence of this mechanism from models of Eocene… 

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