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Woods Hole Oceanographic Institution

Jason C. Goodman

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Publications
»Europa 2006
»Enceladus 2006
»Annular Modes 2006
»Snowball Earth 2006
»Europa 2004
»Snowball Earth 2004
»Climate Variability 2003
»Climate Variability 2002
»Climate Variability 1999


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Goodman, J. C. and R. T. Pierrehumbert, Glacial flow of Floating Marine Ice in `Snowball Earth?, Journal of Geophysical Research, 2003

Simulations of frigid Neoproterozoic climates have not considered the tendency of thick layers of floating marine ice to deform and spread laterally. We have constructed a simple model of the production and flow of marine ice on a planetary scale, and determined ice thickness and flow in two situations: when the ocean is globally ice-covered (??hard snowball??) and when the tropical waters remain open (??soft snowball??). In both cases, ice flow strongly affects the distribution of marine ice. Flowing ice probably carries enough latent heat and freshwater to significantly affect the transition into a Snowball Earth climate. We speculate that flowing marine ice, rather than continental ice sheets, may be the erosive agent that created some Neoproterozoic glacial deposits.

FILE » Snowball Earth 2003



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