Initialising ice sheet model states for use in Earth System Model Preindustrial and Historical simulations ...
<!--!introduction!--> Prior to conducting simulations, climate models are often "spun-up" through an indefinitely long simulation using a constant atmospheric composition taken to characterise preindustrial conditions, until rates of change of key variables are determined to be below...
| Main Authors: | , , , , |
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| Format: | Conference Object |
| Language: | unknown |
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GFZ German Research Centre for Geosciences
2023
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| Online Access: | https://dx.doi.org/10.57757/iugg23-4006 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5019833 |
| Summary: | <!--!introduction!--> Prior to conducting simulations, climate models are often "spun-up" through an indefinitely long simulation using a constant atmospheric composition taken to characterise preindustrial conditions, until rates of change of key variables are determined to be below some threshold defined for equilibrium.This procedure provides a baseline climate for the model and a range of samples of internal variability that are considered equally valid for use as initial conditions for Historical simulations. A number of Earth System models that contributed to CMIP6 can include interactive ice sheet components, and several more are developing this capability on the timeline of the next phase of CMIP. However, we have limited knowledge of the states of the Greenland and Antarctic ice sheets that could be used to create or validate ice sheet states required for a Preindustrial or Historical simulation in the CMIP paradigm. Ice sheets also cannot be assumed to maintain a constant, realistic state if ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... |
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