Results of ISMIP6 Antarctica: a multi-model ensemble of the Antarctic ice sheet evolution over the 21st century

This archive provides the ice sheet model outputs produced as part of the publication "ISMIP6 Antarctica: a multi-model ensemble of the Antarctic ice sheet evolution over the 21st century", published in The Cryosphere, https://tc.copernicus.org/articles/14/3033/2020/

Seroussi, H., Nowicki, S., Payne, A. J., Goelzer, H., Lipscomb, W. H., Abe-Ouchi, A., Agosta, C., Albrecht, T., Asay-Davis, X., Barthel, A., Calov, R., Cullather, R., Dumas, C., Galton-Fenzi, B. K., Gladstone, R., Golledge, N. R., Gregory, J. M., Greve, R., Hattermann, T., Hoffman, M. J., Humbert, A., Huybrechts, P., Jourdain, N. C., Kleiner, T., Larour, E., Leguy, G. R., Lowry, D. P., Little, C. M., Morlighem, M., Pattyn, F., Pelle, T., Price, S. F., Quiquet, A., Reese, R., Schlegel, N.-J., Shepherd, A., Simon, E., Smith, R. S., Straneo, F., Sun, S., Trusel, L. D., Van Breedam, J., van de Wal, R. S. W., Winkelmann, R., Zhao, C., Zhang, T., and Zwinger, T.: ISMIP6 Antarctica: a multi-model ensemble of the Antarctic ice sheet evolution over the 21st century, The Cryosphere, 14, 3033–3070, https://doi.org/10.5194/tc-14-3033-2020, 2020.

Contact: Helene Seroussi, Helene.seroussi@jpl.nasa.gov

Further information on ISMIP6 and ISMIP6 Antarctica Projections can be found here:
http://www.climate-cryosphere.org/activities/targeted/ismip6
http://www.climate-cryosphere.org/wiki/index.php?title=ISMIP6-Projections-Antarctica

Users should cite the original publication when using all or part of the data. 
In order to document CMIP6’s scientific impact and enable ongoing support of CMIP, users are also obligated to acknowledge CMIP6, ISMIP6 and the participating modeling groups.

About the dataset:

- The results are based on model output computed from the ISMIP6 native grids that vary between models. 
- The results are calculated over the ice-covered area of Antarctica, corrected for map projection errors, ice sheet model specific densities taken into account.
- Results for the experiments 'exp*' are provided both as raw results and calculated as differences to the control experiment (ctrl_proj_open or ctrl_proj_std depending on the experiment). The later files are named with "minus_ctrl_proj" to indicate that the control run is substracted.
- Results for ctrl_proj_open, ctrl_proj_std, hist_open and hist_std are not corrected to remove the control run.

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Directory structure:

groupname1
  modelname1
    expid
      computed_iareafl_AIS_groupname1_modelname1_expid.nc
      computed_iareafl_minus_ctrl_proj_AIS_groupname1_modelname1_expid.nc
      computed_iareagr_AIS_groupname1_modelname1_expid.nc
      computed_iareagr_minus_ctrl_proj_AIS_groupname1_modelname1_expid.nc
      computed_icearea_AIS_groupname1_modelname1_expid.nc
      computed_icearea_minus_ctrl_proj_AIS_groupname1_modelname1_expid.nc
      computed_ivol_AIS_groupname1_modelname1_expid.nc
      computed_ivol_minus_ctrl_proj_AIS_groupname1_modelname1_expid.nc
      computed_ivaf_AIS_groupname1_modelname1_expid.nc
      computed_ivaf_minus_ctrl_proj_AIS_groupname1_modelname1_expid.nc
      computed_smb_AIS_groupname1_modelname1_expid.nc
      computed_smb_minus_ctrl_proj_AIS_groupname1_modelname1_expid.nc
      computed_smbgr_AIS_groupname1_modelname1_expid.nc
      computed_smbgr_minus_ctrl_proj_AIS_groupname1_modelname1_expid.nc
      computed_bmbfl_AIS_groupname1_modelname1_expid.nc
      computed_bmbfl_minus_ctrl_proj_AIS_groupname1_modelname1_expid.nc
...

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Description of variables:

icearea - ice area [m^2]
iareafl - floating ice area [m^2]
iareagr - grounded ice area [m^2]
ivol - ice volume [m^3]
ivaf - ice volume above floatation [m^3]
smb - spatially integrated surface mass balance [kg/s]
smbgr - spatially integrated surface mass balance over grounded ice [kg/s]
bmbfl - spatially integrated basal melt rate under floating ice (negative for melting ice) [kg/s]

Variables per file:

rhoi - model specific ice density [kg m-3]
rhow - model specific ocean water density [kg m-3]

time - time, in years

[variable] - global variable integrated over the Antarctica ice sheet
[variable]_region_1 - variable integrated over West Antarctica
[variable]_region_2 - variable integrated over East Antarctica
[variable]_region_3 - variable integrated over the Antarctic Peninsula
[variable]_sector_X - variable integrated over the X sector of the Antarctic ice sheet (18 sectors, from 1 to 18)

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Data usage notice:
If you use any of these results, please acknowledge the work of the people involved in producing them. Acknowledgements should have language similar to the below.

"We thank the Climate and Cryosphere (CliC) effort, which provided support for ISMIP6 through sponsoring of workshops, hosting the ISMIP6 website and wiki, and promoted ISMIP6. We acknowledge the World Climate Research Programme, which, through it's Working Group on Coupled Modelling, coordinated and promoted CMIP5 and CMIP6. We thank the climate modeling groups for producing and making available their model output, the Earth System Grid Federation (ESGF) for archiving the CMIP data and providing access, the University at Buffalo for ISMIP6 data distribution and upload, and the multiple funding agencies who support CMIP5 and CMIP6 and ESGF. We thank the ISMIP6 steering committee, the ISMIP6 model selection group and ISMIP6 dataset preparation group for their continuous engagement in defining ISMIP6."

You should also refer to and cite the following papers:

Seroussi, H., Nowicki, S., Payne, A. J., Goelzer, H., Lipscomb, W. H., Abe-Ouchi, A., Agosta, C., Albrecht, T., Asay-Davis, X., Barthel, A., Calov, R., Cullather, R., Dumas, C., Galton-Fenzi, B. K., Gladstone, R., Golledge, N. R., Gregory, J. M., Greve, R., Hattermann, T., Hoffman, M. J., Humbert, A., Huybrechts, P., Jourdain, N. C., Kleiner, T., Larour, E., Leguy, G. R., Lowry, D. P., Little, C. M., Morlighem, M., Pattyn, F., Pelle, T., Price, S. F., Quiquet, A., Reese, R., Schlegel, N.-J., Shepherd, A., Simon, E., Smith, R. S., Straneo, F., Sun, S., Trusel, L. D., Van Breedam, J., van de Wal, R. S. W., Winkelmann, R., Zhao, C., Zhang, T., and Zwinger, T.: ISMIP6 Antarctica: a multi-model ensemble of the Antarctic ice sheet evolution over the 21st century, The Cryosphere, 14, 3033–3070, https://doi.org/10.5194/tc-14-3033-2020, 2020.

Nowicki, S., Goelzer, H., Seroussi, H., Payne, A. J., Lipscomb, W. H., Abe-Ouchi, A., Agosta, C., Alexander, P., Asay-Davis, X. S., Barthel, A., Bracegirdle, T. J., Cullather, R., Felikson, D., Fettweis, X., Gregory, J. M., Hattermann, T., Jourdain, N. C., Kuipers Munneke, P., Larour, E., Little, C. M., Morlighem, M., Nias, I., Shepherd, A., Simon, E., Slater, D., Smith, R. S., Straneo, F., Trusel, L. D., van den Broeke, M. R., and van de Wal, R.: Experimental protocol for sea level projections from ISMIP6 stand-alone ice sheet models, The Cryosphere, 14, 2331–2368, https://doi.org/10.5194/tc-14-2331-2020, 2020.