The Potsdam Parallel Ice Sheet Model (PISM-PIK) – Part 1: Model description

By R. Winkelmann, M. Martin, M. Haseloff, T. Albrecht, Ed Bueler, C. Khroulev, Anders Levermann. 2010

429 citations recorded by the source corpus.

Abstract. We present the Potsdam Parallel Ice Sheet Model (PISM-PIK), developed at the Potsdam Institute for Climate Impact Research to be used for simulations of large-scale ice sheet-shelf systems. It is derived from the Parallel Ice Sheet Model (Bueler and Brown, 2009). Velocities are calculated by superposition of two shallow stress balance approximations within the entire ice covered region: the shallow ice approximation (SIA) is dominant in grounded regions and accounts for shear deformation parallel to the geoid. The plug-flow type shallow shelf approximation (SSA) dominates the velocity field in ice shelf regions and serves as a basal sliding velocity in grounded regions. Ice streams can be identified diagnostically as regions with a significant contribution of membrane stresses to the local momentum balance. All lateral boundaries in PISM-PIK are free to evolve, including the grounding line and ice fronts. Ice shelf margins in particular are modeled using Neumann boundary conditions for the SSA equations, reflecting a hydrostatic stress imbalance along the vertical calving face. The ice front position is modeled using a subgrid-scale representation of calving front motion (Albrecht et al., 2011) and a physically-motivated calving law based on horizontal spreading rates. The model is tested in experiments from the Marine Ice Sheet Model Intercomparison Project (MISMIP). A dynamic equilibrium simulation of Antarctica under present-day conditions is presented in Martin et al. (2011).

Subfields: Atmospheric Science, Management, Monitoring, Policy and Law, Pulmonary and Respiratory Medicine

View Paper: https://www.semanticscholar.org/paper/0917bd55c082814a1da574e682b5ebf047eb6779

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Citations in the corpus

Grounding-line migration in plan-view marine ice-sheet models: results of the ice2sea MISMIP3d intercomparison (2013, neutral): “The ‘unbuttressed’ stress, (cid:2) f , is the same quantity in the absence of any buttressing, given by (cid:2) f ¼ (cid:4) i gh g ð 1 (cid:2) (cid:4) i =(cid:4) w Þ = 4 (Weertman, 1957; Hindmarsh, 2006; Goldberg and others, 2009), so that (cid:2) @ (cid:2) (cid”
Antarctic sub-shelf melt rates via PICO (2017, methodology): “PICO is implemented in the open-source Parallel Ice Sheet Model (PISM: Bueler and Brown, 2009; Winkelmann et al., 2011).”
The Potsdam Parallel Ice Sheet Model (PISM-PIK) – Part 2: Dynamic equilibrium simulation of the Antarctic ice sheet (2010, methodology): “Based on the Parallel Ice Sheet Model (PISM, Bueler and Brown, 2009), the Potsdam Parallel Ice Sheet Model (PISM-PIK) introduced additional components which are necessary to simulate Antarctic ice flow, in particular ice shelf dynamics (Winkelmann et al., 2011).”
Safe and just Earth system boundaries (2023, positive): “We used simulations from the Parallel Ice Sheet Model (Bueler and Brown 2009; Winkelmann et al. 2011; Albrecht et al. 2020a, 2020b) for the Greenland and Antarctic ice sheets, and the Lund-Potsdam-Jena managed Land model LPJmL (Schaphoff et al.”
Kinematic first-order calving law implies potential for abrupt ice-shelf retreat (2011, methodology): “Brief model description of PISM-PIK In this study, we apply a derived version of the open-source Parallel Ice Sheet Model version stable 0.2 (PISM, see user’s manual (PISM-authors) and model description5 paper (Bueler and Brown, 2009)).”