Coupling framework (1.0) for the PISM (1.1.4) ice sheet model and the MOMS (5.1.0) ocean model via the PICO ice shelf cavity model in an Antarctic domain
- The past and future evolution of the Antarctic Ice Sheet is largely controlled by interactions between the ocean and floating ice shelves. To investigate these interactions, coupled ocean and ice sheet model configurations are required. Previous modelling studies have mostly relied on high-resolution configurations, limiting these studies to individual glaciers or regions over short timescales of decades to a few centuries. We present a framework to couple the dynamic ice sheet model PISM (Parallel Ice Sheet Model) with the global ocean general circulation model MOM5 (Modular Ocean Model) via the ice shelf cavity model PICO (Pots-dam Ice-shelf Cavity mOdel). As ice shelf cavities are not resolved by MOM5 but are parameterized with the PICO box model, the framework allows the ice sheet and ocean components to be run at resolutions of 16 km and 3 degrees respectively. This approach makes the coupled configuration a useful tool for the analysis of interactions between the Antarctic Ice Sheet and the global ocean over time spans of theThe past and future evolution of the Antarctic Ice Sheet is largely controlled by interactions between the ocean and floating ice shelves. To investigate these interactions, coupled ocean and ice sheet model configurations are required. Previous modelling studies have mostly relied on high-resolution configurations, limiting these studies to individual glaciers or regions over short timescales of decades to a few centuries. We present a framework to couple the dynamic ice sheet model PISM (Parallel Ice Sheet Model) with the global ocean general circulation model MOM5 (Modular Ocean Model) via the ice shelf cavity model PICO (Pots-dam Ice-shelf Cavity mOdel). As ice shelf cavities are not resolved by MOM5 but are parameterized with the PICO box model, the framework allows the ice sheet and ocean components to be run at resolutions of 16 km and 3 degrees respectively. This approach makes the coupled configuration a useful tool for the analysis of interactions between the Antarctic Ice Sheet and the global ocean over time spans of the order of centuries to millennia. In this study, we describe the technical implementation of this coupling framework: sub-shelf melting in the ice sheet component is calculated by PICO from modelled ocean temperatures and salinities at the depth of the continental shelf, and, vice versa, the resulting mass and energy fluxes from melting at the ice-ocean interface are transferred to the ocean component. Mass and energy fluxes are shown to be conserved to machine precision across the considered component domains. The implementation is computationally efficient as it introduces only minimal overhead. Furthermore, the coupled model is evaluated in a 4000 year simulation under constant present-day climate forcing and is found to be stable with respect to the ocean and ice sheet spin-up states. The framework deals with heterogeneous spatial grid geometries, varying grid resolutions, and timescales between the ice and ocean component in a generic way; thus, it can be adopted to a wide range of model set-ups.…
Verfasserangaben: | Moritz KreuzerORCiD, Ronja ReeseORCiD, Willem Nicholas HuiskampORCiD, Stefan PetriORCiD, Torsten AlbrechtORCiD, Georg FeulnerORCiD, Ricarda WinkelmannORCiDGND |
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DOI: | https://doi.org/10.5194/gmd-14-3697-2021 |
ISSN: | 1991-959X |
ISSN: | 1991-9603 |
Titel des übergeordneten Werks (Englisch): | Geoscientific model development : an interactive open access journal of the European Geosciences Union |
Verlag: | Copernicus |
Verlagsort: | Göttingen |
Publikationstyp: | Wissenschaftlicher Artikel |
Sprache: | Englisch |
Datum der Erstveröffentlichung: | 22.06.2021 |
Erscheinungsjahr: | 2021 |
Datum der Freischaltung: | 10.11.2023 |
Band: | 14 |
Ausgabe: | 6 |
Seitenanzahl: | 18 |
Erste Seite: | 3697 |
Letzte Seite: | 3714 |
Fördernde Institution: | Deutsche Forschungsgemeinschaft (DFG)German Research Foundation (DFG) [WI4556/4-1, WI4556/3-1, WI4556/2-1]; Horizon 2020 programme [TiPACCs 820575]; German Federal Ministry of Education and Research (BMBF, FONA)Federal Ministry of Education & Research (BMBF) [FKZ:01LP1502C, FKZ:01LP1925D, FKZ:01LP1504D]; NASANational Aeronautics & Space Administration (NASA) [NNX17AG65G]; NSFNational Science Foundation (NSF) [PLR-1603799, PLR-1644277]; European Regional Development Fund (ERDF)European Commission; German Federal Ministry of Education and Research (BMBF)Federal Ministry of Education & Research (BMBF); Land Brandenburg |
Organisationseinheiten: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
DDC-Klassifikation: | 5 Naturwissenschaften und Mathematik / 55 Geowissenschaften, Geologie / 550 Geowissenschaften |
9 Geschichte und Geografie / 91 Geografie, Reisen / 910 Geografie, Reisen | |
Peer Review: | Referiert |
Publikationsweg: | Open Access / Gold Open-Access |
DOAJ gelistet | |
Lizenz (Deutsch): | CC-BY - Namensnennung 4.0 International |