Albedos, Equilibrium Temperatures, and Surface Temperatures of Habitable Planets. (arXiv:1812.06606v1 [astro-ph.EP])
<a href="http://arxiv.org/find/astro-ph/1/au:+Genio_A/0/1/0/all/0/1">Anthony D. Del Genio</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kiang_N/0/1/0/all/0/1">Nancy Y. Kiang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Way_M/0/1/0/all/0/1">Michael J. Way</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Amundsen_D/0/1/0/all/0/1">David S. Amundsen</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Sohl_L/0/1/0/all/0/1">Linda E. Sohl</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Fujii_Y/0/1/0/all/0/1">Yuka Fujii</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Chandler_M/0/1/0/all/0/1">Mark Chandler</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Aleinov_I/0/1/0/all/0/1">Igor Aleinov</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Colose_C/0/1/0/all/0/1">Christopher M. Colose</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Guzewich_S/0/1/0/all/0/1">Scott D. Guzewich</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kelley_M/0/1/0/all/0/1">Maxwell Kelley</a>
The potential habitability of known exoplanets is often categorized by a
nominal equilibrium temperature assuming a Bond albedo of either 0.3, similar
to Earth, or 0. As an indicator of habitability, this leaves much to be
desired, because albedo on other planets can be very different, and because
surface temperature exceeds equilibrium temperature due to the atmospheric
greenhouse effect. We use an ensemble of 3-dimensional general circulation
model simulations to show that for a range of habitable planets, much of the
variability of Bond albedo, equilibrium temperature, and even surface
temperature can be predicted with useful accuracy from incident stellar flux
and stellar temperature, two known external parameters for every confirmed
exoplanet.
The potential habitability of known exoplanets is often categorized by a
nominal equilibrium temperature assuming a Bond albedo of either 0.3, similar
to Earth, or 0. As an indicator of habitability, this leaves much to be
desired, because albedo on other planets can be very different, and because
surface temperature exceeds equilibrium temperature due to the atmospheric
greenhouse effect. We use an ensemble of 3-dimensional general circulation
model simulations to show that for a range of habitable planets, much of the
variability of Bond albedo, equilibrium temperature, and even surface
temperature can be predicted with useful accuracy from incident stellar flux
and stellar temperature, two known external parameters for every confirmed
exoplanet.
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