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Dynamics of a Snowball Earth ocean [PDF]
Nature, 2013 Geological evidence suggests that marine ice extended to the Equator at least twice during the Neoproterozoic era (about 750 to 635 million years ago), inspiring the Snowball Earth hypothesis that the Earth was globally ice-covered. In a possible Snowball Earth climate, ocean circulation and mixing processes would have set the melting and freezing ...
Ashkenazy, Yosef +5 more
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Carbon cycling and snowball Earth [PDF]
Nature, 2008 The possibility that Earth witnessed episodes of global glaciation during the latest Precambrian challenges our understanding of the physical processes controlling the Earth's climate. Peltier et al. suggest that a 'hard snowball Earth' state may have been prevented owing to the release of CO(2) from the oxidation of dissolved organic carbon (DOC) in ...
Goddéris, Yves, Donnadieu, Yannick
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Geophysical Research Letters, 2023 Ocean ventilation is an important regulator for atmospheric CO2 level (pCO2) by affecting the relative proportion of carbon stored in the atmosphere and deep ocean.
Peng Liu +4 more
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Simple Stochastic Modeling of Snowball Probability Throughout Earth History
Geochemistry, Geophysics, Geosystems, 2022 Over its multibillion‐year history, Earth has exhibited a wide range of climates. Its history ranges from snowball episodes where the surface was mostly or entirely covered by ice to periods much warmer than today, where the cryosphere was virtually ...
Mark Baum, Minmin Fu
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Frontiers in Earth Science, 2022 The history of the nitrogen cycle on Earth is linked to the redox evolution of the surface environment. Many nitrogen cycle fluxes are microbially mediated, and the particular fluxes operating at any given time in an ecosystem depend on the presence ...
Benjamin W. Johnson +2 more
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Sea-ice dynamics strongly promote Snowball Earth initiation and destabilize tropical sea-ice margins [PDF]
Climate of the Past, 2012 The Snowball Earth bifurcation, or runaway ice-albedo feedback, is defined for particular boundary conditions by a critical CO<sub>2</sub> and a critical sea-ice cover (SI), both of which are essential for evaluating hypotheses related to ...
A. Voigt, D. S. Abbot
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Sensitivity of Neoproterozoic snowball-Earth inceptions to continental configuration, orbital geometry, and volcanism [PDF]
Climate of the Past, 2023 The Cryogenian period (720–635 million years ago) in the Neoproterozoic era featured two phases of global or near-global ice cover termed “snowball Earth”.
J. Eberhard +6 more
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Life, geology and snowball Earth [PDF]
Nature, 2001 According to the 'snowball Earth' hypothesis, a series of global glaciations occurred 750–580 million years ago, each lasting for millions of years and ending in a scorching heat caused by an extreme enrichment of atmospheric greenhouse gases. Hyde et al.1 have used climate models to simulate this global glaciation, finding in one case an alternative ...
D P, Schrag, P F, Hoffman
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Transient marine euxinia at the end of the terminal Cryogenian glaciation
Nature Communications, 2018 The termination of the Marinoan snowball Earth event marks one of the most drastic transitions in Earth history, but the oceanic response remains unclear.
Xianguo Lang +11 more
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