Ice-sheet model sensitivities to environmental forcing and their use in projecting future sea level (the SeaRISE project)
Ten ice-sheet models are used to study sensitivity of the Greenland and Antarctic ice sheets to prescribed changes of surface mass balance, sub-ice-shelf melting and basal sliding. Results exhibit a large range in projected contributions to sea-level change. In most cases, the ice volume above flota...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
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International Glaciological Society
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/35569 |
| _version_ | 1848754531896131584 |
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| author | Bindschadler, R. Nowicki, S. Abe-Ouchi, A. Aschwanden, A. Choi, H. Fastook, J. Ren, Diandong |
| author_facet | Bindschadler, R. Nowicki, S. Abe-Ouchi, A. Aschwanden, A. Choi, H. Fastook, J. Ren, Diandong |
| author_sort | Bindschadler, R. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Ten ice-sheet models are used to study sensitivity of the Greenland and Antarctic ice sheets to prescribed changes of surface mass balance, sub-ice-shelf melting and basal sliding. Results exhibit a large range in projected contributions to sea-level change. In most cases, the ice volume above flotation lost is linearly dependent on the strength of the forcing. Combinations of forcings can be closely approximated by linearly summing the contributions from single forcing experiments, suggesting that nonlinear feedbacks are modest. Our models indicate that Greenland is more sensitive than Antarctica to likely atmospheric changes in temperature and precipitation, while Antarctica is more sensitive to increased ice-shelf basal melting. An experiment approximating the Intergovernmental Panel on Climate Change’s RCP8.5 scenario produces additional first-century contributions to sea level of 22.3 and 8.1cm from Greenland and Antarctica, respectively, with a range among models of 62 and 14 cm, respectively. By 200 years, projections increase to 53.2 and 26.7 cm, respectively, with ranges of 79 and 43 cm. Linear interpolation of the sensitivity results closely approximates these projections, revealing the relative contributions of the individual forcings on the combined volume change and suggesting that total ice-sheet response to complicated forcings over 200 years can be linearized. |
| first_indexed | 2025-11-14T08:41:54Z |
| format | Journal Article |
| id | curtin-20.500.11937-35569 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:41:54Z |
| publishDate | 2013 |
| publisher | International Glaciological Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-355692017-09-13T15:27:38Z Ice-sheet model sensitivities to environmental forcing and their use in projecting future sea level (the SeaRISE project) Bindschadler, R. Nowicki, S. Abe-Ouchi, A. Aschwanden, A. Choi, H. Fastook, J. Ren, Diandong Ice flows Sea Rise Ten ice-sheet models are used to study sensitivity of the Greenland and Antarctic ice sheets to prescribed changes of surface mass balance, sub-ice-shelf melting and basal sliding. Results exhibit a large range in projected contributions to sea-level change. In most cases, the ice volume above flotation lost is linearly dependent on the strength of the forcing. Combinations of forcings can be closely approximated by linearly summing the contributions from single forcing experiments, suggesting that nonlinear feedbacks are modest. Our models indicate that Greenland is more sensitive than Antarctica to likely atmospheric changes in temperature and precipitation, while Antarctica is more sensitive to increased ice-shelf basal melting. An experiment approximating the Intergovernmental Panel on Climate Change’s RCP8.5 scenario produces additional first-century contributions to sea level of 22.3 and 8.1cm from Greenland and Antarctica, respectively, with a range among models of 62 and 14 cm, respectively. By 200 years, projections increase to 53.2 and 26.7 cm, respectively, with ranges of 79 and 43 cm. Linear interpolation of the sensitivity results closely approximates these projections, revealing the relative contributions of the individual forcings on the combined volume change and suggesting that total ice-sheet response to complicated forcings over 200 years can be linearized. 2013 Journal Article http://hdl.handle.net/20.500.11937/35569 10.3189/2013JoG12J125 International Glaciological Society unknown |
| spellingShingle | Ice flows Sea Rise Bindschadler, R. Nowicki, S. Abe-Ouchi, A. Aschwanden, A. Choi, H. Fastook, J. Ren, Diandong Ice-sheet model sensitivities to environmental forcing and their use in projecting future sea level (the SeaRISE project) |
| title | Ice-sheet model sensitivities to environmental forcing and their use in projecting future sea level (the SeaRISE project) |
| title_full | Ice-sheet model sensitivities to environmental forcing and their use in projecting future sea level (the SeaRISE project) |
| title_fullStr | Ice-sheet model sensitivities to environmental forcing and their use in projecting future sea level (the SeaRISE project) |
| title_full_unstemmed | Ice-sheet model sensitivities to environmental forcing and their use in projecting future sea level (the SeaRISE project) |
| title_short | Ice-sheet model sensitivities to environmental forcing and their use in projecting future sea level (the SeaRISE project) |
| title_sort | ice-sheet model sensitivities to environmental forcing and their use in projecting future sea level (the searise project) |
| topic | Ice flows Sea Rise |
| url | http://hdl.handle.net/20.500.11937/35569 |