Calibrated prediction of Pine Island Glacier retreat during the 21st and 22nd centuries with a coupled flowline model

publisher:10.1016/j.epsl.2012.04.022

Calibrated prediction of Pine Island Glacier retreat during the 21st and 22nd centuries with a coupled flowline model

Gladstone, Rupert M, Lee, Victoria, Rougier, Jonathan, Payne, Antony J, Hellmer, Hartmut, Le Brocq, Anne, Shepherd, Andrew, Edwards, Tamsin L, Gregory, Jonathan and Cornford, Stephen L ;

Contact

Hartmut.Hellmer [ at ] awi.de

Abstract

A flowline ice sheet model is coupled to a box model for cavity circulation and configured for the Pine Island Glacier. An ensemble of 5000 simulations are carried out from 1900 to 2200 with varying inputs and parameters, forced by ocean temperatures predicted by a regional ocean model under the A1B 'business as usual' emissions scenario. Comparison is made against recent observations to provide a calibrated prediction in the form of a 95% confidence set. Predictions are for monotonic (apart from some small scale fluctuations in a minority of cases) retreat of the grounding line over the next 200. yr with huge uncertainty in the rate of retreat. Full collapse of the main trunk of the PIG during the 22nd century remains a possibility. © 2012 Elsevier B.V.

Item Type

Article

Authors

Gladstone, Rupert M, Lee, Victoria, Rougier, Jonathan, Payne, Antony J, Hellmer, Hartmut, Le Brocq, Anne, Shepherd, Andrew, Edwards, Tamsin L, Gregory, Jonathan and Cornford, Stephen L ;

Divisions

AWI Organizations > Climate Sciences > Physical Oceanography of the Polar Seas

Programs

Helmholtz Research Programs > PACES I (2009-2013) > TOPIC 1: The Changing Arctic and Antarctic > WP 1.1: Role of Ice Sheets in the Earth System

Publication Status

Published

Eprint ID

30420

DOI https://www.doi.org/10.1016/j.epsl.2012.04.022

Cite as

Gladstone, R. M. , Lee, V. , Rougier, J. , Payne, A. J. , Hellmer, H. , Le Brocq, A. , Shepherd, A. , Edwards, T. L. , Gregory, J. and Cornford, S. L. (2012): Calibrated prediction of Pine Island Glacier retreat during the 21st and 22nd centuries with a coupled flowline model , Earth and Planetary Science Letters, 333-33 , pp. 191-199 . doi: https://www.doi.org/10.1016/j.epsl.2012.04.022

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