| Title: | initMIP-Antarctica: an ice sheet model initialization experiment of ISMIP6 |
| Authors: | Seroussi, Hélène Browse this author |
| Nowicki, Sophie Browse this author |
| Simon, Erika Browse this author |
| Abe-Ouchi, Ayako Browse this author |
| Albrecht, Torsten Browse this author |
| Brondex, Julien Browse this author |
| Cornford, Stephen Browse this author |
| Dumas, Christophe Browse this author |
| Gillet-Chaulet, Fabien Browse this author |
| Goelzer, Heiko Browse this author |
| Golledge, Nicholas R Browse this author |
| Gregory, Jonathan M Browse this author |
| Greve, Ralf Browse this author →KAKEN DB |
| Hoffman, Matthew J Browse this author |
| Humbert, Angelika Browse this author |
| Huybrechts, Philippe Browse this author |
| Kleiner, Thomas Browse this author |
| Larour, Eric Browse this author |
| Leguy, Gunter Browse this author |
| Lipscomb, William H Browse this author |
| Lowry, Daniel Browse this author |
| Mengel, Matthias Browse this author |
| Morlighem, Mathieu Browse this author |
| Pattyn, Frank Browse this author |
| Payne, Anthony J Browse this author |
| Pollard, David Browse this author |
| Price, Stephen F Browse this author |
| Quiquet, Aurélien Browse this author |
| Reerink, Thomas J Browse this author |
| Reese, Ronja Browse this author |
| Rodehacke, Christian B Browse this author |
| Schlegel, Nicole-Jeanne Browse this author |
| Shepherd, Andrew Browse this author |
| Sun, Sainan Browse this author |
| Sutter, Johannes Browse this author |
| Van Breedam, Jonas Browse this author |
| van de Wal, Roderik S. W Browse this author |
| Winkelmann, Ricarda Browse this author |
| Zhang, Tong Browse this author |
| Issue Date: | 14-May-2019 |
| Publisher: | Copernicus Publications on behalf of the European Geosciences Union |
| Journal Title: | The Cryosphere |
| Volume: | 13 |
| Issue: | 5 |
| Start Page: | 1441 |
| End Page: | 1471 |
| Publisher DOI: | 10.5194/tc-13-1441-2019 |
| Abstract: | 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. |
| Rights: | https://creativecommons.org/licenses/by/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/74187 |
| Appears in Collections: | 低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
