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Climate variations on Earth-like circumbinary planets

Author

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  • Max Popp

    (Max Planck Institute for Meteorology
    Program in Atmospheric and Oceanic Sciences, Princeton University
    Present address: NOAA/Geophysical Fluid Dynamics Laboratory, Princeton, New Jersey 08540-6649, USA)

  • Siegfried Eggl

    (Jet Propulsion Laboratory, California Institute of Technology)

Abstract

The discovery of planets orbiting double stars at close distances has sparked increasing scientific interest in determining whether Earth-analogues can remain habitable in such environments and how their atmospheric dynamics is influenced by the rapidly changing insolation. In this work we present results of the first three-dimensional numerical experiments of a water-rich planet orbiting a double star. We find that the periodic forcing of the atmosphere has a noticeable impact on the planet’s climate. Signatures of the forcing frequencies related to the planet’s as well as to the binary’s orbital periods are present in a variety of climate indicators such as temperature and precipitation, making the interpretation of potential observables challenging. However, for Earth-like greenhouse gas concentrations, the variable forcing does not change the range of insolation values allowing for habitable climates substantially.

Suggested Citation

  • Max Popp & Siegfried Eggl, 2017. "Climate variations on Earth-like circumbinary planets," Nature Communications, Nature, vol. 8(1), pages 1-12, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14957
    DOI: 10.1038/ncomms14957
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