Uncertainties in the modelled CO<sub>2</sub> threshold for Antarctic glaciation
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چکیده
منابع مشابه
Uncertainties in the Modelled CO2 Threshold for Antarctic Glaciation
A frequently cited atmospheric CO2 threshold for the onset of Antarctic glaciation of ∼ 780 ppmv is based on the study of DeConto and Pollard (2003) using an ice sheet model and the GENESIS climate model. Proxy records suggest that atmospheric CO2 concentrations passed through this threshold across the Eocene–Oligocene transition ∼ 34 Ma. However, atmospheric CO2 concentrations may have been cl...
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Stable and radiogenic isotopic and sedimentological data from sub-Antarctic deep sea sediment cores reveal a temporal link between changes in seawater SrrSr ratios and major episodes of late Eocene–early Oligocene climate change. The SrrSr records show two major inflections, one at 38–39 Ma near the middlerlate Eocene boundary, followed by another at 33.4 Ma. Similarly, the oxygen isotope, ice-...
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15 صفحه اولMajor advance of South Georgia glaciers during the Antarctic Cold Reversal following extensive sub-Antarctic glaciation
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ژورنال
عنوان ژورنال: Climate of the Past
سال: 2014
ISSN: 1814-9332
DOI: 10.5194/cp-10-451-2014