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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Climate and ocean circulation changes toward a modern snowball Earth [PDF]
Climate of the PastIt has been hypothesized that the Earth may have experienced snowball events in the past, during which its surface became completely covered with ice. Previous studies used general circulation models to investigate the onset and climate of such snowball ...
T. Obase +8 more
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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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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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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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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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Snowball Earth transitions from Last Glacial Maximum conditions provide an independent upper limit on Earth's climate sensitivity [PDF]
Earth System DynamicsGeological evidence of a snowball Earth state indicate persistent tropical sea ice cover during the Neoproterozoic (>635 million years ago). Current theory is that a strengthening of the positive surface albedo feedback with cooling temperatures ...
M. Renoult +6 more
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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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The Enigma of Neoproterozoic Giant Ooids—Fingerprints of Extreme Climate?
Geophysical Research Letters, 2020 Geologists have documented at least 14 occurrences of “giant ooids,” a geologically rare type of carbonate allochem, in Neoproterozoic successions at low paleolatitudes.
Elizabeth J. Trower
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Sea-ice thermodynamics can determine waterbelt scenarios for Snowball Earth [PDF]
Earth System DynamicsSnowball Earth refers to multiple periods in the Neoproterozoic during which geological evidence indicates that the Earth was largely covered in ice. A Snowball Earth results from a runaway ice–albedo feedback, but there is an ongoing debate about how ...
J. Hörner, A. Voigt
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