Present Day Antarctica
Contents |
Grid Details
These are 5km resolution, NetCDF files of Antarctica gathered from various data sources and interpolated, when necessary, onto the same grid using polar stereographic projection.
Standard Parallel | 71.0 |
Latitude of Projection Origin | -90.0 |
False Easting | 0.0 |
False Northing | 0.0 |
Straight Vertical Longitude from Pole | 0.0 |
Lower Left Corner X-Value | -2800 km |
Lower Left Corner Y-Value | -2800 km |
Data Download
Antarctica with Ice Shelves | The data files contains the following fields in a NetCDF format:
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Media:Antarctica_5km_withshelves_v3.nc |
Antarctica without Ice Shelves | The data files contains the following fields in a NetCDF format:
The fields are adjusted for models that don't handle ice shelves very well and are removed using the attached mask file. |
Media:Antarctica_5km_woshelves_v3.nc |
The recent changes to the files above can be found in the change log.
The Improved BEDMAP Data
The Antarctica data set contains the BEDMAP1_plus data field for topography. The areas of improved data are highlighted in the figure below. This data is courtesy of Hamish Pritchard and BAS. The new grid is a result of merging BEDMAP1, an AGASEA-BBAS-based grid from Texas University, and bathymetry grids by Nitsche and Tara Dean(BAS).
Data Sources
Field Description: | Reference: | Notes: | CF Name: | Units: |
---|---|---|---|---|
Precipitation | Vaughan et al. 1999 J. Climate 12, 933-946 | Better precip fields available?
netCDF, CF 1.3. Polar Stereographic projection, 5 km |
lwe_precipitation_rate | meter/year |
Bed topography | BEDMAP1_plus | The grid is a result of merging BEDMAP1, an AGASEA-BBAS-based grid from Texas University, and bathymetry grids by Nitsche and Tara Dean(BAS). CF 1.03. Polar Stereographic projection, 5 km | bedrock_altitude | meter |
Ice thickness | BEDMAP (Liu et al. 1999) | netCDF, CF 1.3. Polar Stereographic projection, 5 km | land_ice_thickness | meter |
Surface Elevation | BEDMAP (Liu et al. 1999) | Can get a better data set from RAMP?
netCDF, CF 1.3. Polar Stereographic projection, 5 km |
surface_altitude | meter |
Temperature record | Vostok, interpolated over 100 yr intervals | Text file, also in NetCDF | N/A | degrees Celsius |
Sea Level change | SPECMAP | SPECMAP improvements? Text file, also in NetCDF | N/A | meter |
Mean Annual Temperature | Comiso et al 2000 | netCDF, CF 1.3. Polar Stereographic projection, 5 km | surface_temperature | degrees Celsius |
Geothermal flux | Shapiro and Ritzwoller 2004 | Fox Maule et al. 2005 is likely better | basal_heat_flux | watts/meter^2 |
Future Precipitation Forcing | ||||
Future Temperature Forcing | ||||
Future Ocean Forcing? |