Numerical experiments examining the response of onshore oceanic heat supply to yearly changes in the Amundsen Sea icescape (Antarctica)

Satellite images from Antarctica reveal important changes in the coastal icescape (fast-ice, icebergs and ice shelves) but these yearly changes and their impacts on the coastal circulation and ice shelf basal melt rates are not represented in the Earth System Models used to project future sea level rise. The impacts of these yearly icescape changes are thus investigated using a high-resolution regional ocean-ice shelves-sea ice coupled model of the Amundsen Sea (Antarctica). A set of nine semi-idealized experiments were designed to highlight the impacts of (a) the collapse of the Thwaites Glacier Tongue, (b) the disappearance of the Bear Ridge Iceberg Chain and tabular iceberg B22, and (c) presence/absence of a fast-ice cover between Thwaites and Pine Island ice shelves, in both cold and warm background hydrological conditions. The dataset features the results of the nine experiments and reveals changes in sea ice concentrations, coastal oceanic circulation and oceanic heat supply to the ice shelf cavities, ice shelf basal melt rates, hydrological conditions, and fluxes of heat/freshwater at the sea surface. These model results are archived in self-documented NetCDF files with the appropriate metadata for each variable. The dataset includes a 'readme file' providing an overview of the archive as well as additional information regarding the model results.

Disciplines

Physical oceanography, Cryosphere

Keywords

Antarctica, Amundsen Sea, Ice shelves, Oceanography, Cryosphere, Modeling, ROMS

Location

-68N, -76S, -90E, -140W

Devices

The dataset does not include observational data but the associated research article includes a thorough description of the numerical model configuration used to generate the dataset.

Data

FileSizeFormatProcessingAccess
fig02_exp2011_cold_grid_model.nc (model grid for this experiment)
33 MoNetCDFProcessed data
fig02_exp2011_cold_initial_condition_model.nc (initial condition for this experiment)
92 MoNetCDFProcessed data
fig02_exp2011fastI_grid_model.nc (model grid for this experiment)
33 MoNetCDFProcessed data
fig02_exp2011fastI_initial_condition_model.nc (initial condition for this experiment)
94 MoNetCDFProcessed data
fig02_exp2011_grid_model.nc (model grid for this experiment)
33 MoNetCDFProcessed data
fig02_exp2011_initial_condition_model.nc (initial condition for this experiment)
94 MoNetCDFProcessed data
fig02_exp2022_cold_grid_model.nc (model grid for this experiment)
33 MoNetCDFProcessed data
fig02_exp2022_cold_initial_condition_model.nc (initial condition for this experiment)
92 MoNetCDFProcessed data
fig02_exp2022_grid_model.nc (model grid for this experiment)
33 MoNetCDFProcessed data
fig02_exp2022_initial_condition_model.nc (initial condition for this experiment)
94 MoNetCDFProcessed data
fig02_exp2022noBerg_cold_grid_model.nc (model grid for this experiment)
33 MoNetCDFProcessed data
fig02_exp2022noBerg_cold_initial_condition_model.nc (initial condition for this experiment)
92 MoNetCDFProcessed data
fig02_exp2022noberg_grid_model.nc (model grid for this experiment)
33 MoNetCDFProcessed data
fig02_exp2022noberg_initial_condition_model.nc (initial condition for this experiment)
94 MoNetCDFProcessed data
fig02_exp2022noFastI_cold_grid_model.nc (model grid for this experiment)
33 MoNetCDFProcessed data
fig02_exp2022noFastI_cold_initial_condition_model.nc (initial condition for this experiment)
93 MoNetCDFProcessed data
fig02_exp2022nofasti_grid_model.nc (model grid for this experiment)
33 MoNetCDFProcessed data
fig02_exp2022nofasti_initial_condition_model.nc (initial condition for this experiment)
94 MoNetCDFProcessed data
heat_flux_at_surface_ocean.nc (model results)
129 MoNetCDFProcessed data
horizontal_oceanic_heat_flux.nc (model results)
11 MoNetCDFProcessed data
hydrography_basalmelt_circulation.nc (model results)
1 GoNetCDFProcessed data
readme.txt (overall description of the dataset)
3 KoTEXTProcessed data
sea_ice_concentration.nc (model results)
115 MoNetCDFProcessed data
sea_ice_growth.nc (model results)
136 MoNetCDFProcessed data
How to cite
St-Laurent Pierre, Stammerjohn Sharon, Ted Maksym (2024). Numerical experiments examining the response of onshore oceanic heat supply to yearly changes in the Amundsen Sea icescape (Antarctica). SEANOE. https://doi.org/10.17882/99231
In addition to properly cite this dataset, it would be appreciated that the following work(s) be cited too, when using this dataset in a publication :
St‐Laurent P., Stammerjohn S. E., Maksym T. (2024). Response of Onshore Oceanic Heat Supply to Yearly Changes in the Amundsen Sea Icescape (Antarctica). Journal of Geophysical Research: Oceans, 129 (4). https://doi.org/10.1029/2023JC020467

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