10.5880/PIK.2016.002 eng dataset GFZ German Research Centre for Geosciences datapub@gfz-potsdam.de http://www.gfz-potsdam.de Helmholtz-Centre Potsdam - GFZ German Research Centre for Geosciences Helmholtz-Centre Potsdam - GFZ German Research Centre for Geosciences pointOfContact 2016-04-05 urn:ogc:def:crs:EPSG:4326 Ice-shelf surface, basal and bedrock topography data for the second Ice Shelf-Ocean Model Intercomparison Project (ISOMIP+) 2016-04-05 revision 2015-10-08 creation doi:10.5880/PIK.2016.002 Cornford, Stephen University of Bristol author Asay-Davis, Xylar Potsdam Institute for Climate Impact Research author GFZ Data Services publisher This data set includes four sets of ice-shelf topography data for use in the ISOMIP+ experiments described in Sec. 3 of Asay-Davis et al. (2015), to which this data set is supplementary material. The data set contains four NetCDF files, each of which includes six spatially two-dimensional fields: the ice upper surface, ice draft (ice sheet lower surface), bed topography, the fraction of open ocean, the fraction of floating ice and the fraction of grounded ice. Complete Asay-Davis, Xylar Potsdam Institute for Climate Impact Research Research Scientist xylar.asay-davis@pik-potsdam.de http://https://www.pik-potsdam.de/members/xylaras informtion pointOfContact ice sheet-ocean interactions ice shelves ice shelf cavities idealized modeling EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > ICE SHEETS EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > FRESH WATER FLUX EARTH SCIENCE SERVICES > MODELS > CRYOSPHERE MODELS NASA/GCMD Earth Science Keywords publication glaciology modelling ocean GEMET - INSPIRE themes, version 1.0 publication CC BY-SA 4.0 CC BY-SA 4.0 10.5194/gmdd-8-9859-2015 DOI IsSupplementTo https://commons.lbl.gov/display/bisicles/BISICLES URL References eng geoscientificInformation http://doi.org/10.5880/PIK.2016.002 WWW:LINK-1.0-http--link Data Access - DOI Data Access - DOI information Methods: The topographic data was produced using subversion revision number r2825 of the BISICLES ice-sheet model (https://commons.lbl.gov/display/bisicles/BISICLES) configured to use the shallow shelf approximation (SSA, a commonly used approximation of the Stokes equation appropriate for ice shelves and fast flowing ice streams). The simulation used to produce the topography was the Ice1r followed by the Ice1ra experiment, as described in Sec. 2.2 of Asay-Davis et al. (2015). The bedrock topography for the experiment is described by an analytic function in Sec. 2.1 of Asay-Davis et al. (2015). In these experiments, BISICLES was first run to steady state without basal melting, then was allowed to retreat for 100 years forced by a basal melt parameterization (Ice1r) and finally was allowed to re-advance for 100 years with the melt parameterization turned off (Ice1ra). BISICLES makes use of adaptive mesh refinement (AMR) to focus resolution in fast flowing regions and near grounding lines. In the simulations, resolution was allowed to vary from 4 km to 1 km, and the topographic snapshots have been interpolated to simple rectangular mesh with a constant resolution of 1 km.