Design and results of the ice sheet model initialisation experiments 
initMIP-Greenland: an ISMIP6 intercomparison

Gölzer, H.; Nowicki, S.; Edwards, T.; Beckley, M.; Abe-Ouchi, A.; Aschwanden, A.; Calov, Reinhard; Gagliardini, O.; Gillet-Chaulet, F.; Golledge, N. R.; Gregory, J.; Greve, R.; Humbert, A.; Huybrechts, P.; Kennedy, J. H.; Larour, E.; Lipscomb, W. H.; Le clec´h, S.; Lee, V.; Morlighem, M.; Pattyn, F.; Payne, A. J.; Rodehacke, C.; Rückamp, M.; Saito, F.; Schlegel, N.; Seroussi, H.; Shepherd, A.; Sun, S.; Wal, R. van de; Ziemen, F. A.

doi:10.5194/tc-12-1433-2018

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Design and results of the ice sheet model initialisation experiments initMIP-Greenland: an ISMIP6 intercomparison

Authors

Gölzer, H.
External Organizations;

Nowicki, S.
External Organizations;

Edwards, T.
External Organizations;

Beckley, M.
External Organizations;

Abe-Ouchi, A.
External Organizations;

Aschwanden, A.
External Organizations;

/persons/resource/Reinhard.Calov

Calov, Reinhard
Potsdam Institute for Climate Impact Research;

Gagliardini, O.
External Organizations;

Gillet-Chaulet, F.
External Organizations;

Golledge, N. R.
External Organizations;

Gregory, J.
External Organizations;

Greve, R.
External Organizations;

Humbert, A.
External Organizations;

Huybrechts, P.
External Organizations;

Kennedy, J. H.
External Organizations;

Larour, E.
External Organizations;

Lipscomb, W. H.
External Organizations;

Le clec´h, S.
External Organizations;

Lee, V.
External Organizations;

Morlighem, M.
External Organizations;

Pattyn, F.
External Organizations;

Payne, A. J.
External Organizations;

Rodehacke, C.
External Organizations;

Rückamp, M.
External Organizations;

Saito, F.
External Organizations;

Schlegel, N.
External Organizations;

Seroussi, H.
External Organizations;

Shepherd, A.
External Organizations;

Sun, S.
External Organizations;

Wal, R. van de
External Organizations;

Ziemen, F. A.
External Organizations;

External Ressource

No external resources are shared

Fulltext (public)

7937oa.pdf
(Publisher version), 6MB

Supplementary Material (public)

There is no public supplementary material available

Citation

Gölzer, H., Nowicki, S., Edwards, T., Beckley, M., Abe-Ouchi, A., Aschwanden, A., Calov, R., Gagliardini, O., Gillet-Chaulet, F., Golledge, N. R., Gregory, J., Greve, R., Humbert, A., Huybrechts, P., Kennedy, J. H., Larour, E., Lipscomb, W. H., Le clec´h, S., Lee, V., Morlighem, M., Pattyn, F., Payne, A. J., Rodehacke, C., Rückamp, M., Saito, F., Schlegel, N., Seroussi, H., Shepherd, A., Sun, S., Wal, R. v. d., Ziemen, F. A. (2018): Design and results of the ice sheet model initialisation experiments initMIP-Greenland: an ISMIP6 intercomparison. - The Cryosphere, 12, 4, 1433-1460.
https://doi.org/10.5194/tc-12-1433-2018

Cite as: https://publications.pik-potsdam.de/pubman/item/item_22194

Abstract

Earlier large-scale Greenland ice sheet sea-level projections (e.g. those run during the ice2sea and SeaRISE initiatives) have shown that ice sheet initial conditions have a large effect on the projections and give rise to important uncertainties. The goal of this initMIP-Greenland intercomparison exercise is to compare, evaluate, and improve the initialisation techniques used in the ice sheet modelling community and to estimate the associated uncertainties in modelled mass changes. initMIP-Greenland is the first in a series of ice sheet model intercomparison activities within ISMIP6 (the Ice Sheet Model Intercomparison Project for CMIP6), which is the primary activity within the Coupled Model Intercomparison Project Phase 6 (CMIP6) focusing on the ice sheets. Two experiments for the large-scale Greenland ice sheet have been designed to allow intercomparison between participating models of (1) the initial present-day state of the ice sheet and (2) the response in two idealised forward experiments. The forward experiments serve to evaluate the initialisation in terms of model drift (forward run without additional forcing) and in response to a large perturbation (prescribed surface mass balance anomaly); they should not be interpreted as sea-level projections. We present and discuss results that highlight the diversity of data sets, boundary conditions, and initialisation techniques used in the community to generate initial states of the Greenland ice sheet. We find good agreement across the ensemble for the dynamic response to surface mass balance changes in areas where the simulated ice sheets overlap but differences arising from the initial size of the ice sheet. The model drift in the control experiment is reduced for models that participated in earlier intercomparison exercises.