 |
| Titel |
Simulation of the last glacial cycle with a coupled climate ice-sheet model of intermediate complexity |
| VerfasserIn |
A. Ganopolski, R. Calov, M. Claussen |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1814-9324
|
| Digitales Dokument |
URL |
| Erschienen |
In: Climate of the Past ; 6, no. 2 ; Nr. 6, no. 2 (2010-04-13), S.229-244 |
| Datensatznummer |
250003446
|
| Publikation (Nr.) |
 copernicus.org/cp-6-229-2010.pdf |
|
|
|
|
|
| Zusammenfassung |
| A new version of the Earth system model of intermediate complexity,
CLIMBER-2, which includes the three-dimensional polythermal ice-sheet model
SICOPOLIS, is used to simulate the last glacial cycle forced by variations
of the Earth's orbital parameters and atmospheric concentration of major
greenhouse gases. The climate and ice-sheet components of the model are
coupled bi-directionally through a physically-based surface energy and mass
balance interface. The model accounts for the time-dependent effect of
aeolian dust on planetary and snow albedo. The model successfully simulates
the temporal and spatial dynamics of the major Northern Hemisphere (NH) ice
sheets, including rapid glacial inception and strong asymmetry between the
ice-sheet growth phase and glacial termination. Spatial extent and elevation
of the ice sheets during the last glacial maximum agree reasonably well with
palaeoclimate reconstructions. A suite of sensitivity experiments
demonstrates that simulated ice-sheet evolution during the last glacial
cycle is very sensitive to some parameters of the surface energy and
mass-balance interface and dust module. The possibility of a considerable
acceleration of the climate ice-sheet model is discussed. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|