Publication Abstracts

Way et al. 2016

Way, M.J., A.D. Del Genio, N.Y. Kiang, L.E. Sohl, D.H. Grinspoon, I. Aleinov, M. Kelley, and T. Clune, 2016: Was Venus the first habitable world of our solar system? Geophys. Res. Lett., 43, no. 16, 8376-8383, doi:10.1002/2016GL069790.

Present-day Venus is an inhospitable place with surface temperatures approaching 750 K and an atmosphere 90 times as thick as Earth's. Billions of years ago the picture may have been very different. We have created a suite of 3-D climate simulations using topographic data from the Magellan mission, solar spectral irradiance estimates for 2.9 and 0.715 Gya, present-day Venus orbital parameters, an ocean volume consistent with current theory, and an atmospheric composition estimated for early Venus. Using these parameters we find that such a world could have had moderate temperatures if Venus had a prograde rotation period slower than ∼16 Earth days, despite an incident solar flux 46-70% higher than Earth receives. At its current rotation period, Venus's climate could have remained habitable until at least 0.715 Gya. These results demonstrate the role rotation and topography play in understanding the climatic history of Venus-like exoplanets discovered in the present epoch.

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BibTeX Citation

@article{wa06600o,
  author={Way, M. J. and Del Genio, A. D. and Kiang, N. Y. and Sohl, L. E. and Grinspoon, D. H. and Aleinov, I. and Kelley, M. and Clune, T.},
  title={Was Venus the first habitable world of our solar system?},
  year={2016},
  journal={Geophys. Res. Lett.},
  volume={43},
  number={16},
  pages={8376--8383},
  doi={10.1002%2F2016GL069790},
}

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RIS Citation

TY  - JOUR
ID  - wa06600o
AU  - Way, M. J.
AU  - Del Genio, A. D.
AU  - Kiang, N. Y.
AU  - Sohl, L. E.
AU  - Grinspoon, D. H.
AU  - Aleinov, I.
AU  - Kelley, M.
AU  - Clune, T.
PY  - 2016
TI  - Was Venus the first habitable world of our solar system?
JA  - Geophys. Res. Lett.
VL  - 43
IS  - 16
SP  - 8376
EP  - 8383
DO  - 10.1002%2F2016GL069790
ER  -

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