Articles | Volume 9, issue 2
Research article
 | Highlight paper
07 Jun 2018
Research article | Highlight paper |  | 07 Jun 2018

Two drastically different climate states on an Earth-like terra-planet

Sirisha Kalidindi, Christian H. Reick, Thomas Raddatz, and Martin Claussen

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Cited articles

Abe, Y., Numaguti, A., Komatsu, G., and Kobayashi, Y.: Four climate regimes on a land planet with wet surface: Effects of obliquity change and implications for ancient Mars, Icarus, 178, 27–39,, 2005. 
Abe, Y., Abe-Ouchi, A., Sleep, N. H., and Zahnle, K. J.: Habitable Zone Limits for Dry Planets, Astrobiology, 11, 443–460,, 2011. 
Aleina, F. C., Baudena, M., D'Andrea, F., and Provenzale, A.: Multiple equilibria on planet dune: Climate-vegetation dynamics on a sandy planet, Tellus B, 65, 17662,, 2013. 
Becker, T. and Stevens, B.: Climate and climate sensitivity to changing CO2 on an idealized land planet, J. Adv. Model. Earth Syst., 6, 1205–1223,, 2014. 
Boschi, R., Lucarini, V., and Pascale, S.: Bistability of the climate around the habitable zone: A thermodynamic investigation, Icarus, 226, 1724–1742,, 2013. 
Short summary
Using climate simulations, we investigate the role of water recycling in shaping the climate of low-obliquity Earth-like terra-planets. By such a mechanism feeding water back from the extra-tropics to the tropics, the planet can assume two drastically different climate states differing by more than 35 K in global temperature. We describe the bifurcation between the two states occurring upon changes in surface albedo and argue that the bistability hints at a wider habitable zone for such planets.
Final-revised paper