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Record #167701:

A 'snowball Earth' climate triggered by continental break-up through changes in runoff / Yannick Donnadieu, Yves Goddéris, Gilles Ramstein, Anne Nédélec, Joseph Meert.

Title: A 'snowball Earth' climate triggered by continental break-up through changes in runoff / Yannick Donnadieu, Yves Goddéris, Gilles Ramstein, Anne Nédélec, Joseph Meert.
Author(s): Donnadieu, Yannick.
Goddéris, Yves.
Ramstein, Gilles.
Nédélec, Anne.
Meert, Joseph.
Date: 2004.
In: Nature. (2004.), Vol. 428(6980) (2004)
Abstract: Investigates need for anomalously low atmospheric CO₂ levels in "snowball Earth" descriptions of end of Proterozoic eon, 800 to 550 Myr ago. Uses coupled climate-geochemical model GEOCLIM to assess effect of palaeogeographic changes preceding Sturtian glacial period, 750 million years ago, on atmospheric CO₂ levels. GEOCLIM combines long-term global carbon cycle model with coupled ocean-atmosphere model. Simulations show continental break-up of Rodinia leading to increased runoff, and hence CO₂ consumption through continental weathering. Atmospheric CO₂ concentrations decrease by 1,320 p.p.m. and globe cools by 8°C. Simulation combining runoff effect with weathering effect of erupted basaltic traps results in snowball glaciation. Concludes tectonic changes could have triggered transition from "greenhouse" to "icehouse" climate.
Notes:

Nature. Vol. 428(6980) :303-306 (2004).

Keywords: 551.58 -- Climatology.
551.8 -- Palaeogeography.
551.336 -- Ice ages.
551.583.7 -- Palaeoclimatology.
551.72 -- Proterozoic.
551.241 -- Plate tectonics.
551.577 -- Precipitation.
551.311.23 -- Weathering.
546.26 -- Carbon.
546.264-31 -- Carbon dioxide.
551.588.5 -- Climate, relationship with ice.
551.590.3 -- Volcanic eruptions, effect on weather and climate.
519.673 -- Modelling.
D -- Atmospheric sciences.
SPRI record no.: 167701

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245 03 ‡aA 'snowball Earth' climate triggered by continental break-up through changes in runoff /‡cYannick Donnadieu, Yves Goddéris, Gilles Ramstein, Anne Nédélec, Joseph Meert.
260 ## ‡a[S.l.] :‡b[s.n.],‡c2004.
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500 ## ‡aNature. Vol. 428(6980) :303-306 (2004).
520 3# ‡aInvestigates need for anomalously low atmospheric CO₂ levels in "snowball Earth" descriptions of end of Proterozoic eon, 800 to 550 Myr ago. Uses coupled climate-geochemical model GEOCLIM to assess effect of palaeogeographic changes preceding Sturtian glacial period, 750 million years ago, on atmospheric CO₂ levels. GEOCLIM combines long-term global carbon cycle model with coupled ocean-atmosphere model. Simulations show continental break-up of Rodinia leading to increased runoff, and hence CO₂ consumption through continental weathering. Atmospheric CO₂ concentrations decrease by 1,320 p.p.m. and globe cools by 8°C. Simulation combining runoff effect with weathering effect of erupted basaltic traps results in snowball glaciation. Concludes tectonic changes could have triggered transition from "greenhouse" to "icehouse" climate.
530 ## ‡aAlso issued online ‡uurn:doi:10.1038/nature02408‡uhttps://dx.doi.org/10.1038/nature02408
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650 07 ‡a551.8 -- Palaeogeography.‡2udc
650 07 ‡a551.336 -- Ice ages.‡2udc
650 07 ‡a551.583.7 -- Palaeoclimatology.‡2udc
650 07 ‡a551.72 -- Proterozoic.‡2udc
650 07 ‡a551.241 -- Plate tectonics.‡2udc
650 07 ‡a551.577 -- Precipitation.‡2udc
650 07 ‡a551.311.23 -- Weathering.‡2udc
650 07 ‡a546.26 -- Carbon.‡2udc
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650 07 ‡a519.673 -- Modelling.‡2udc
650 07 ‡aD -- Atmospheric sciences.‡2local
700 1# ‡aDonnadieu, Yannick.
700 1# ‡aGoddéris, Yves.
700 1# ‡aRamstein, Gilles.
700 1# ‡aNédélec, Anne.
700 1# ‡aMeert, Joseph.
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