initMIP-Antarctica: an ice sheet model initialization experiment of ISMIP6
Ice sheet numerical modeling is an important tool to estimate the dynamic contribution of the Antarctic ice sheet to sea level rise over the coming centuries. The influence of initial conditions on ice sheet model simulations, however, is still unclear. To better understand this influence, an initia...
Published in: | The Cryosphere |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications on behalf of the European Geosciences Union
|
Subjects: | |
Online Access: | http://hdl.handle.net/2115/74187 https://doi.org/10.5194/tc-13-1441-2019 |
id |
fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/74187 |
---|---|
record_format |
openpolar |
spelling |
fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/74187 2023-05-15T13:51:33+02:00 initMIP-Antarctica: an ice sheet model initialization experiment of ISMIP6 Seroussi, Hélène Nowicki, Sophie Simon, Erika Abe-Ouchi, Ayako Albrecht, Torsten Brondex, Julien Cornford, Stephen Dumas, Christophe Gillet-Chaulet, Fabien Goelzer, Heiko Golledge, Nicholas R Gregory, Jonathan M Greve, Ralf Hoffman, Matthew J Humbert, Angelika Huybrechts, Philippe Kleiner, Thomas Larour, Eric Leguy, Gunter Lipscomb, William H Lowry, Daniel Mengel, Matthias Morlighem, Mathieu Pattyn, Frank Payne, Anthony J Pollard, David Price, Stephen F Quiquet, Aurélien Reerink, Thomas J Reese, Ronja Rodehacke, Christian B Schlegel, Nicole-Jeanne Shepherd, Andrew Sun, Sainan Sutter, Johannes Van Breedam, Jonas van de Wal, Roderik S. W Winkelmann, Ricarda Zhang, Tong http://hdl.handle.net/2115/74187 https://doi.org/10.5194/tc-13-1441-2019 eng eng Copernicus Publications on behalf of the European Geosciences Union http://hdl.handle.net/2115/74187 The Cryosphere, 13(5): 1441-1471 http://dx.doi.org/10.5194/tc-13-1441-2019 https://creativecommons.org/licenses/by/4.0/ CC-BY 450 article fthokunivhus https://doi.org/10.5194/tc-13-1441-2019 2022-11-18T01:05:24Z Ice sheet numerical modeling is an important tool to estimate the dynamic contribution of the Antarctic ice sheet to sea level rise over the coming centuries. The influence of initial conditions on ice sheet model simulations, however, is still unclear. To better understand this influence, an initial state intercomparison exercise (initMIP) has been developed to compare, evaluate, and improve initialization procedures and estimate their impact on century-scale simulations. initMIP is the first set of experiments of the Ice Sheet Model Intercomparison Project for CMIP6 (ISMIP6), which is the primary Coupled Model Intercomparison Project Phase 6 (CMIP6) activity focusing on the Greenland and Antarctic ice sheets. Following initMIP-Greenland, initMIP-Antarctica has been designed to explore uncertainties associated with model initialization and spin-up and to evaluate the impact of changes in external forcings. Starting from the state of the Antarctic ice sheet at the end of the initialization procedure, three forward experiments are each run for 100 years: a control run, a run with a surface mass balance anomaly, and a run with a basal melting anomaly beneath floating ice. This study presents the results of initMIP-Antarctica from 25 simulations performed by 16 international modeling groups. The submitted results use different initial conditions and initialization methods, as well as ice flow model parameters and reference external forcings. We find a good agreement among model responses to the surface mass balance anomaly but large variations in responses to the basal melting anomaly. These variations can be attributed to differences in the extent of ice shelves and their upstream tributaries, the numerical treatment of grounding line, and the initial ocean conditions applied, suggesting that ongoing efforts to better represent ice shelves in continental-scale models should continue. Article in Journal/Newspaper Antarc* Antarctic Antarctica Greenland Ice Sheet Ice Shelves The Cryosphere Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Antarctic Greenland The Antarctic The Cryosphere 13 5 1441 1471 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
450 |
spellingShingle |
450 Seroussi, Hélène Nowicki, Sophie Simon, Erika Abe-Ouchi, Ayako Albrecht, Torsten Brondex, Julien Cornford, Stephen Dumas, Christophe Gillet-Chaulet, Fabien Goelzer, Heiko Golledge, Nicholas R Gregory, Jonathan M Greve, Ralf Hoffman, Matthew J Humbert, Angelika Huybrechts, Philippe Kleiner, Thomas Larour, Eric Leguy, Gunter Lipscomb, William H Lowry, Daniel Mengel, Matthias Morlighem, Mathieu Pattyn, Frank Payne, Anthony J Pollard, David Price, Stephen F Quiquet, Aurélien Reerink, Thomas J Reese, Ronja Rodehacke, Christian B Schlegel, Nicole-Jeanne Shepherd, Andrew Sun, Sainan Sutter, Johannes Van Breedam, Jonas van de Wal, Roderik S. W Winkelmann, Ricarda Zhang, Tong initMIP-Antarctica: an ice sheet model initialization experiment of ISMIP6 |
topic_facet |
450 |
description |
Ice sheet numerical modeling is an important tool to estimate the dynamic contribution of the Antarctic ice sheet to sea level rise over the coming centuries. The influence of initial conditions on ice sheet model simulations, however, is still unclear. To better understand this influence, an initial state intercomparison exercise (initMIP) has been developed to compare, evaluate, and improve initialization procedures and estimate their impact on century-scale simulations. initMIP is the first set of experiments of the Ice Sheet Model Intercomparison Project for CMIP6 (ISMIP6), which is the primary Coupled Model Intercomparison Project Phase 6 (CMIP6) activity focusing on the Greenland and Antarctic ice sheets. Following initMIP-Greenland, initMIP-Antarctica has been designed to explore uncertainties associated with model initialization and spin-up and to evaluate the impact of changes in external forcings. Starting from the state of the Antarctic ice sheet at the end of the initialization procedure, three forward experiments are each run for 100 years: a control run, a run with a surface mass balance anomaly, and a run with a basal melting anomaly beneath floating ice. This study presents the results of initMIP-Antarctica from 25 simulations performed by 16 international modeling groups. The submitted results use different initial conditions and initialization methods, as well as ice flow model parameters and reference external forcings. We find a good agreement among model responses to the surface mass balance anomaly but large variations in responses to the basal melting anomaly. These variations can be attributed to differences in the extent of ice shelves and their upstream tributaries, the numerical treatment of grounding line, and the initial ocean conditions applied, suggesting that ongoing efforts to better represent ice shelves in continental-scale models should continue. |
format |
Article in Journal/Newspaper |
author |
Seroussi, Hélène Nowicki, Sophie Simon, Erika Abe-Ouchi, Ayako Albrecht, Torsten Brondex, Julien Cornford, Stephen Dumas, Christophe Gillet-Chaulet, Fabien Goelzer, Heiko Golledge, Nicholas R Gregory, Jonathan M Greve, Ralf Hoffman, Matthew J Humbert, Angelika Huybrechts, Philippe Kleiner, Thomas Larour, Eric Leguy, Gunter Lipscomb, William H Lowry, Daniel Mengel, Matthias Morlighem, Mathieu Pattyn, Frank Payne, Anthony J Pollard, David Price, Stephen F Quiquet, Aurélien Reerink, Thomas J Reese, Ronja Rodehacke, Christian B Schlegel, Nicole-Jeanne Shepherd, Andrew Sun, Sainan Sutter, Johannes Van Breedam, Jonas van de Wal, Roderik S. W Winkelmann, Ricarda Zhang, Tong |
author_facet |
Seroussi, Hélène Nowicki, Sophie Simon, Erika Abe-Ouchi, Ayako Albrecht, Torsten Brondex, Julien Cornford, Stephen Dumas, Christophe Gillet-Chaulet, Fabien Goelzer, Heiko Golledge, Nicholas R Gregory, Jonathan M Greve, Ralf Hoffman, Matthew J Humbert, Angelika Huybrechts, Philippe Kleiner, Thomas Larour, Eric Leguy, Gunter Lipscomb, William H Lowry, Daniel Mengel, Matthias Morlighem, Mathieu Pattyn, Frank Payne, Anthony J Pollard, David Price, Stephen F Quiquet, Aurélien Reerink, Thomas J Reese, Ronja Rodehacke, Christian B Schlegel, Nicole-Jeanne Shepherd, Andrew Sun, Sainan Sutter, Johannes Van Breedam, Jonas van de Wal, Roderik S. W Winkelmann, Ricarda Zhang, Tong |
author_sort |
Seroussi, Hélène |
title |
initMIP-Antarctica: an ice sheet model initialization experiment of ISMIP6 |
title_short |
initMIP-Antarctica: an ice sheet model initialization experiment of ISMIP6 |
title_full |
initMIP-Antarctica: an ice sheet model initialization experiment of ISMIP6 |
title_fullStr |
initMIP-Antarctica: an ice sheet model initialization experiment of ISMIP6 |
title_full_unstemmed |
initMIP-Antarctica: an ice sheet model initialization experiment of ISMIP6 |
title_sort |
initmip-antarctica: an ice sheet model initialization experiment of ismip6 |
publisher |
Copernicus Publications on behalf of the European Geosciences Union |
url |
http://hdl.handle.net/2115/74187 https://doi.org/10.5194/tc-13-1441-2019 |
geographic |
Antarctic Greenland The Antarctic |
geographic_facet |
Antarctic Greenland The Antarctic |
genre |
Antarc* Antarctic Antarctica Greenland Ice Sheet Ice Shelves The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctica Greenland Ice Sheet Ice Shelves The Cryosphere |
op_relation |
http://hdl.handle.net/2115/74187 The Cryosphere, 13(5): 1441-1471 http://dx.doi.org/10.5194/tc-13-1441-2019 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-13-1441-2019 |
container_title |
The Cryosphere |
container_volume |
13 |
container_issue |
5 |
container_start_page |
1441 |
op_container_end_page |
1471 |
_version_ |
1766255453749116928 |