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Equilibrium Temperatures and Albedos of Habitable Earth-Like Planets in a Coupled Atmosphere-Ocean GCMThe potential habitability of detected exoplanets is typically assessed using the concept of equilibrium temperature (T[subscript] e) based on cloud-free 1-D models with assumed albedo equal to Earth's (0.3) to determine whether a planet lies in the habitable zone. Incident stellar flux appears to be a better metric for stars unlike the Sun. These estimates, however, ignore the effect of clouds on planetary albedo and the fact that the climates of synchronously rotating planets are not well predicted by 1-D models. Given that most planet candidates that will be detected in the next few years will be tidally locked and orbiting M stars, how might the habitable zone e tailored to better in-form characterization with scarce observing resources?
Document ID
20180000367
Document Type
Presentation
Authors
Del Genio, Anthony (NASA Goddard Inst. for Space Studies New York, NY, United States)
Way, Michael (NASA Goddard Inst. for Space Studies New York, NY, United States)
Amundsen, David (NASA Goddard Inst. for Space Studies New York, NY, United States)
Sohl, Linda (Columbia Univ. New York, NY, United States)
Fujii, Yuka (Earth Life Science Institute Tokyo, Japan)
Ebihara, Yuka (Columbia Univ. New York, NY, United States)
Kiang, Nancy (NASA Goddard Inst. for Space Studies New York, NY, United States)
Chandler, Mark (Columbia Univ. New York, NY, United States)
Aleinov, Igor (Columbia Univ. New York, NY, United States)
Kelley, Maxwell (NASA Goddard Inst. for Space Studies New York, NY, United States)
Date Acquired
January 9, 2018
Publication Date
November 13, 2017
Subject Category
Lunar and Planetary Science and Exploration
Report/Patent Number
GSFC-E-DAA-TN51079
Meeting Information
Habitable Worlds 2017: A System Science Workshop(Laramie, WY)
Funding Number(s)
CONTRACT_GRANT: NNG17HP03C
CONTRACT_GRANT: 80NSSC17M0057
Distribution Limits
Public
Copyright
Public Use Permitted.

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