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PARASO, a circum-Antarctic fully coupled ice-sheet-ocean-sea-ice-atmosphere-land model involving f.ETISh1.7, NEMO3.6, LIM3.6, COSM05.0 and CLM4.5
Pelletier, C.; Fichefet, T.; Goosse, H.; Haubner, K.; Helsen, S.; Huot, P.-V.; Kittel, C.; Klein, F.; Le Clec'h, S.; van Lipzig, N.P.M.; Marchi, S.; Massonnet, F.; Mathiot, P.; Moravveji, E.; Moreno-Chamarro, E.; Ortega, P.; Pattyn, F.; Souverijns, N.; Van Achter, G.; Vanden Broucke, S.; Vanhulle, A.; Verfaillie, D.; Zipf, L. (2022). PARASO, a circum-Antarctic fully coupled ice-sheet-ocean-sea-ice-atmosphere-land model involving f.ETISh1.7, NEMO3.6, LIM3.6, COSM05.0 and CLM4.5. Geosci. Model Dev. 15(2): 553-594. https://dx.doi.org/10.5194/gmd-15-553-2022
In: Geoscientific Model Development. Copernicus Publications: Göttingen. ISSN 1991-959X; e-ISSN 1991-9603, meer
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| Auteurs | | Top |
- Pelletier, C.
- Fichefet, T.
- Goosse, H.
- Haubner, K.
- Helsen, S.
- Huot, P.-V.
- Kittel, C.
- Klein, F.
|
- Le Clec'h, S.
- van Lipzig, N.P.M.
- Marchi, S.
- Massonnet, F.
- Mathiot, P.
- Moravveji, E.
- Moreno-Chamarro, E.
- Ortega, P.
|
- Pattyn, F.
- Souverijns, N.
- Van Achter, G.
- Vanden Broucke, S.
- Vanhulle, A.
- Verfaillie, D.
- Zipf, L.
|
| Abstract |
We introduce PARASO, a novel five-component fully coupled regional climate model over an Antarctic circumpolar domain covering the full Southern Ocean. The state-of-the-art models used are the fast Elementary Thermomechanical Ice Sheet model (f.ETISh) v1.7 (ice sheet), the Nucleus for European Modelling of the Ocean (NEMO) v3.6 (ocean), the Louvain-la-Neuve sea-ice model (LIM) v3.6 (sea ice), the COnsortium for Small-scale MOdeling (COSMO) model v5.0 (atmosphere) and its CLimate Mode (CLM) v4.5 (land), which are here run at a horizontal resolution close to 1/4 degrees. One key feature of this tool resides in a novel two-way coupling interface for representing ocean- ice-sheet interactions, through explicitly resolved ice-shelf cavities. The impact of atmospheric processes on the Antarctic ice sheet is also conveyed through computed COSMO-CLM-f.ETISh surface mass exchange. In this technical paper, we briefly introduce each model's configuration and document the developments that were carried out in order to establish PARASO. The new offline-based NEMO-f.ETISh coupling interface is thoroughly described. Our developments also include a new surface tiling approach to combine open-ocean and sea-ice-covered cells within COSMO, which was required to make this model relevant in the context of coupled simulations in polar regions. We present results from a 2000-2001 coupled 2-year experiment. PARASO is numerically stable and fully operational. The 2-year simulation conducted without fine tuning of the model reproduced the main expected features, although remaining systematic biases provide perspectives for further adjustment and development. |
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