Results 21 to 30 of about 2,064 (153)
Clouds and Snowball Earth deglaciation
Geophysical Research Letters, 2012 Neoproterozoic, and possibly Paleoproterozoic, glaciations represent the most extreme climate events in post‐Hadean Earth, and may link closely with the evolution of the atmosphere and life.
Dorian S. Abbot +6 more
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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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Geosciences, 2012 Evidence based on molecular clocks, together with molecular evidence/biomarkers and putative body fossils, points to major evolutionary events prior to and during the intense Cryogenian and Ediacaran glaciations. The glaciations themselves were of global
Daniel Paul Le Heron
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Tonian Low‐Latitude Marine Ecosystems Were Cold Before Snowball Earth
Geophysical Research Letters, 2023 Precambrian marine carbonate strata are commonly assumed to have formed in warm‐water carbonate factories due to the temperature dependence of non‐skeletal carbonate precipitation rates.
Elizabeth J. Trower +4 more
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Eurypsychrophilic acidophiles: From (meta)genomes to low-temperature biotechnologies
Frontiers in Microbiology, 2023 Low temperature and acidic environments encompass natural milieus such as acid rock drainage in Antarctica and anthropogenic sites including drained sulfidic sediments in Scandinavia.
Mark Dopson +5 more
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The dynamics of the Snowball Earth Hadley circulation for off-equatorial and seasonally varying insolation [PDF]
Earth System Dynamics, 2013 I study the Hadley circulation of a completely ice-covered Snowball Earth through simulations with a comprehensive atmosphere general circulation model.
A. Voigt
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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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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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Tracing the Snowball bifurcation of aquaplanets through time reveals a fundamental shift in critical-state dynamics [PDF]
Earth System Dynamics, 2023 The instability with respect to global glaciation is a fundamental property of the climate system caused by the positive ice-albedo feedback. The atmospheric concentration of carbon dioxide (CO2) at which this Snowball bifurcation occurs changes through ...
G. Feulner +3 more
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Radiative effects of ozone on the climate of a Snowball Earth [PDF]
Climate of the Past, 2012 Some geochemical and geological evidence has been interpreted to suggest that the concentration of atmospheric oxygen was only 1–10 % of the present level in the time interval from 750 to 580 million years ago when several nearly global glaciations or
J. Yang, Y. Hu, W. R. Peltier
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