Modeling the Last Ice-age Cycle With 2-d Climate Models
We compare the results of 2 zonally averaged climate models designed to simulate the ice-age cycles of the Pleistocene. One model was developed at Louvain-la-Neuve University (LLN-model), the other model is now running at the University of Bremen (UB-model). In the LLN-model, the atmosphere/ocean su...
| Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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| Main Authors: | , |
| Other Authors: | |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Elsevier Science Bv
1993
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| Subjects: | |
| Online Access: | http://hdl.handle.net/2078.1/49566 https://doi.org/10.1016/0031-0182(93)90055-N |
| Summary: | We compare the results of 2 zonally averaged climate models designed to simulate the ice-age cycles of the Pleistocene. One model was developed at Louvain-la-Neuve University (LLN-model), the other model is now running at the University of Bremen (UB-model). In the LLN-model, the atmosphere/ocean sub-system is treated in a rather sophisticated way, with a simplified formulation of ice sheet dynamics. The UB-model explicitly calculates ice flow and ice temperature within the ice sheet, but contains a simplified atmosphere and no ocean. The two model simulations of the last ice-age cycle (the last 120.000 years) show the strong link between the variations in the insolation and the modelled variations of the ice-sheet volume. However, this link is non-linear: the transformation of the insolation changes into changes of the global ice volume depends on the modelled state of the ice sheet. |
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