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  An open ocean region in Neoproterozoic glaciations would have to be narrow to allow equatorial ice sheets

Rodehacke, C., Voigt, A., Ziemen, F., & Abbot, D. (2013). An open ocean region in Neoproterozoic glaciations would have to be narrow to allow equatorial ice sheets. Geophysical Research Letters, 40, 5503-5507. doi:10.1002/2013GL057582.

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Rodehacke, Christian1, Author           
Voigt, Aiko, Author           
Ziemen, Florian1, Author           
Abbot, D.S., Author
Affiliations:
1Ocean Physics, The Ocean in the Earth System, MPI for Meteorology, Max Planck Society, ou_913557              

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 Abstract: A major goal of understanding Neoproterozoic glaciations and determining their effect on the evolution of life and Earth's atmosphere is establishing whether and how much open ocean there was during them. Geological evidence tells us that continental ice sheets had to flow into the ocean near the equator during these glaciations. Here we drive the Parallel Ice Sheet Model with output from four simulations of the ECHAM5/Max Planck Institute Ocean Model atmosphere-ocean general circulation model with successively narrower open ocean regions. We find that extensive equatorial ice sheets form on marine margins if sea ice extends to within about 20° latitude of the equator or less (Jormungand-like and hard snowball states), but do not form if there is more open ocean than this. Given uncertainty in topographical reconstruction and ice sheet ablation parameterizations, we perform extensive sensitivity tests to confirm the robustness of our main conclusions. © 2013. American Geophysical Union.

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Language(s): eng - English
 Dates: 2013-10-242013-11
 Publication Status: Issued
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/2013GL057582
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Title: Geophysical Research Letters
  Other : Geophys. Res. Letts.
  Abbreviation : Geophys. Res. Lett.
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Geophysical Union
Pages: - Volume / Issue: 40 Sequence Number: - Start / End Page: 5503 - 5507 Identifier: ISSN: 0094-8276
CoNE: https://pure.mpg.de/cone/journals/resource/954925465217