Articles | Volume 13, issue 12
https://doi.org/10.5194/gmd-13-6481-2020
https://doi.org/10.5194/gmd-13-6481-2020
Development and technical paper
 | 
22 Dec 2020
Development and technical paper |  | 22 Dec 2020

Improvements in one-dimensional grounding-line parameterizations in an ice-sheet model with lateral variations (PSUICE3D v2.1)

David Pollard and Robert M. DeConto

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Cited articles

Arthern, R. J. and Williams, C. R.: The sensitivity of West Antarctica to the submarine melting feedback, Geophys. Res. Lett., 44, 252–2359, 2017. 
Bassis, J. N. and Jacobs, S.: Diverse calving patterns linked to glacier geometry, Nat. Geosci., 6, 833–836, 2013. 
Bassis, J. N. and Walker, C. C.: Upper and lower limits on the stability of calving glaciers from the yield strength envelope of ice, Proc. Roy. Soc. A, 468, 913–931, 2012. 
Benn, D., Åström, J., Zwinger, T., Todd, J., and Crawford, A.: Marine ice-cliff instability: How does it work, and what controls ice retreat rates?, EGU General Assembly, Vienna, Austria, 7–12 April 2019, EGU2019-15396, 2019. 
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Buttressing by floating ice shelves at ice-sheet grounding lines is an important process that affects ice retreat and whether structural failure occurs in deep bathymetry. Here, we use a simple algorithm to better represent 2-D grounding-line curvature in an ice-sheet model. Along with other enhancements, this improves the performance in idealized-fjord intercomparisons and enables better diagnosis of potential structural failure at future retreating Antarctic grounding lines.