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  Coupling framework (1.0) for the PISM (1.1.4) ice sheet model and the MOM5 (5.1.0) ocean model via the PICO ice shelf cavity model in an Antarctic domain

Kreuzer, M., Reese, R., Huiskamp, W. N., Petri, S., Albrecht, T., Feulner, G., Winkelmann, R. (2021): Coupling framework (1.0) for the PISM (1.1.4) ice sheet model and the MOM5 (5.1.0) ocean model via the PICO ice shelf cavity model in an Antarctic domain. - Geoscientific Model Development, 14, 6, 3697-3714.
https://doi.org/10.5194/gmd-14-3697-2021

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Item Permalink: https://publications.pik-potsdam.de/pubman/item/item_24574 Version Permalink: https://publications.pik-potsdam.de/pubman/item/item_24574_9
Genre: Journal Article

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 Creators:
Kreuzer, Moritz1, Author              
Reese, Ronja1, Author              
Huiskamp, Willem Nicholas1, Author              
Petri, Stefan1, Author              
Albrecht, Torsten1, Author              
Feulner, Georg1, Author              
Winkelmann, Ricarda1, Author              
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1Potsdam Institute for Climate Impact Research, Potsdam, ou_persistent13              

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Free keywords: SPP 1158
 Abstract: 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 time scales of decades to a few centuries. We present a framework to couple the dynamic ice sheet model PISM with the global ocean general circulation model MOM5 via the ice-shelf cavity module PICO. Since ice-shelf cavities are not resolved by MOM5, but parameterized with the box model PICO, the framework allows the ice sheet and ocean model to be run at resolution of 16 km and 3 degree, respectively. This approach makes the coupled configuration a useful tool for the analysis of interactions between the entire Antarctic Ice Sheet and the Earth system over time spans on 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 model is calculated by PICO from modeled ocean temperatures and salinities at the depth of the continental shelf and, vice versa, the resulting mass and energy fluxes from the melting at the ice-ocean interface are transferred to the ocean model. Mass and energy fluxes are shown to be conserved to machine precision across the considered model domains. The implementation is computationally efficient as it introduces only minimal overhead. The framework deals with heterogeneous spatial grid geometries, varying grid resolutions and time scales between the ice and ocean model in a generic way, and can thus be adopted to a wide range of model setups.

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Language(s): eng - English
 Dates: 2020-07-092021-05-212021-05-212021-06-22
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.5194/gmd-14-3697-2021
MDB-ID: yes - 3208
Model / method: PISM-PIK
Model / method: POEM
PIKDOMAIN: RD1 - Earth System Analysis
Regional keyword: Arctic & Antarctica
Research topic keyword: Ice
Research topic keyword: Oceans
Organisational keyword: RD1 - Earth System Analysis
Working Group: Ice Dynamics
OATYPE: Gold Open Access
 Degree: -

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Title: Geoscientific Model Development
Source Genre: Journal, SCI, Scopus, p3, oa
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Pages: - Volume / Issue: 14 (6) Sequence Number: - Start / End Page: 3697 - 3714 Identifier: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/journals185
Publisher: Copernicus