globalchange  > 气候减缓与适应
DOI: 10.1038/NGEO2994
论文题名:
Abrupt climate transition of icy worlds from snowball to moist or runaway greenhouse
作者: Yang J.; Ding F.; Ramirez R.M.; Peltier W.R.; Hu Y.; Liu Y.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2017
卷: 10, 期:8
起始页码: 556
结束页码: 560
语种: 英语
Scopus关键词: climate change ; climate modeling ; Enceladus ; Europa ; global climate ; greenhouse gas ; insolation ; Moon ; planetary surface ; solar system ; water vapor
英文摘要: Ongoing and future space missions aim to identify potentially habitable planets in our Solar System and beyond. Planetary habitability is determined not only by a planet's current stellar insolation and atmospheric properties, but also by the evolutionary history of its climate. It has been suggested that icy planets and moons become habitable after their initial ice shield melts as their host stars brighten. Here we show from global climate model simulations that a habitable state is not achieved in the climatic evolution of those icy planets and moons that possess an inactive carbonate-silicate cycle and low concentrations of greenhouse gases. Examples for such planetary bodies are the icy moons Europa and Enceladus, and certain icy exoplanets orbiting G and F stars. We find that the stellar fluxes that are required to overcome a planet's initial snowball state are so large that they lead to significant water loss and preclude a habitable planet. Specifically, they exceed the moist greenhouse limit, at which water vapour accumulates at high altitudes where it can readily escape, or the runaway greenhouse limit, at which the strength of the greenhouse increases until the oceans boil away.We suggest that some icy planetary bodies may transition directly to a moist or runaway greenhouse without passing through a habitable Earth-like state. © 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/105738
Appears in Collections:气候减缓与适应
科学计划与规划

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作者单位: Laboratory for Climate and Atmosphere-Ocean Studies, Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing, China; Department of the Geophysical Sciences, University of Chicago, Chicago, IL, United States; Carl Sagan Institute, Department of Astronomy, Cornell University, Ithaca, NY, United States; Department of Physics, University of TorontoON, Canada

Recommended Citation:
Yang J.,Ding F.,Ramirez R.M.,et al. Abrupt climate transition of icy worlds from snowball to moist or runaway greenhouse[J]. Nature Geoscience,2017-01-01,10(8)
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