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CISM ISMIP6 Antarctic Projection data

Description
This work aims at quantifying uncertainties in sea level projections using forcing from the Ice Sheet Model Intercomparison Project for CMIP6 (ISMIP6). The Community Ice Sheet Model (CISM) is used to run ISMIP6-based projections of ocean-forced Antarctic Ice Sheet (AIS) evolution. In these experiments we investigate parameters such as basal friction laws, grid resolutions, melt scheme, stress balance approximation among others. These runs span 550 years starting from a spin-up starting at year 1950. The 'Download Options' button links to a README file containing references and more information.
DOI
https://doi.org/10.26024/eegn-3x24
Related Links
Lipscomb et al, Description and evaluation of the Community Ice Sheet Model (CISM) v2.1, Geosci. Model Dev., 12, 387–424, 2019.
Lipscomb et al, ISMIP6-based projections of ocean-forced Antarctic Ice Sheet evolution using the Community Ice Sheet Model, The Cryosphere, 15, 2021.
Nowicki et al, Experimental protocol for sea level projections from ISMIP6 stand-alone ice sheet models, The Cryosphere, 14, 2331–2368, 2020.
Download Options

Related Activities
Project - CCSM

Child Datasets

There are two kinds of forcing, ocean thermal forcing and ice-shelf collapse. The ocean thermal forcing is computed as a background climatology added to annual ESM anomalies (the anomalies are computed with reference to years 1941–1960). Available resolutions are 8km, 4km, 2km; the files at 4km and 2km were interpolated from those at 8km. The ice-shelf collapse files contain annual retreat masks. Available resolution is 4km, interpolated from forcing originally at 8km.
Contains three initial-condition files. The initial-condition file, based on observations, is the same for all spin-ups at a given resolution and is named “ISMIP6_Antarctica_4km.bedmachine2.ice_domain_mask.nc” (or similarly for other resolutions). In addition, there are four kinds of files for each set of experiment, resolution, melt_parameterization, and melt_calibration: 1. One or two config files (one used at initialization and one at restart): “ISMIP6_4km.config” and “ISMIP6_4km.config....
The Forward Control runs are runs without ESM thermal forcing anomalies. There are four kinds of files for each set of experiment, resolution, melt_parameterization, and melt_calibration: 1. A config file, “ismip6.config” 2. A history file containing one time slice corresponding to year 2500 and named “out_ISMIP6_Antarctica_4km.nc” (or similarly at other resolutions) 3. A restart file, containing one time slice corresponding to the last saved time slice (could vary) and named “ISMIP6_Antar...
The Forward Control runs are runs with ESM thermal forcing anomalies. There are four kinds of files for each set of experiment, resolution, ESM, melt_parameterization, and melt_calibration: 1. A config file, “ismip6.config” 2. A history file containing one time slice corresponding to year 2500 and named “out_ISMIP6_Antarctica_4km.nc” (or similarly at other resolutions) 3. A restart file, containing one time slice corresponding to the last saved time slice (could vary) and named “ISMIP6_Anta...
Date Created
2021-02-04 17:01:33
Date Last Updated
2021-02-12 08:49:32
Version Date Publisher Published State Source
1.0 2021-02-04 17:01:33 Ilana Stern Published
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