Details

Autor(en) / Beteiligte

• Pelletier, Charles
• Fichefet, Thierry
• Goosse, Hugues
• Haubner, Konstanze
• Helsen, Samuel
• Huot, Pierre-Vincent
• Kittel, Christoph
• Klein, François
• Le clec'h, Sébastien
• van Lipzig, Nicole P. M
• Marchi, Sylvain
• Massonnet, François
• Mathiot, Pierre
• Moravveji, Ehsan
• Moreno-Chamarro, Eduardo
• Ortega, Pablo
• Pattyn, Frank
• Souverijns, Niels
• Van Achter, Guillian
• Vanden Broucke, Sam
• Vanhulle, Alexander
• Verfaillie, Deborah
• Zipf, Lars

Titel

PARASO, a circum-Antarctic fully coupled ice-sheet–ocean–sea-ice–atmosphere–land model involving f.ETISh1.7, NEMO3.6, LIM3.6, COSMO5.0 and CLM4.5

Ist Teil von

• Geoscientific Model Development, 2022-01, Vol.15 (2), p.553-594

Ort / Verlag

Katlenburg-Lindau: Copernicus GmbH

Erscheinungsjahr

2022

Quelle

Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals

Beschreibungen/Notizen

• 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∘. 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.