Difference between revisions of "Present Day Antarctica"
From Interactive System for Ice sheet Simulation
(→Data Sources) |
(→Data Sources) |
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| Vostok, interpolated over 100 yr intervals | | Vostok, interpolated over 100 yr intervals | ||
| Text file, also in NetCDF | | Text file, also in NetCDF | ||
| + | |N/A | ||
| + | |degrees Celsius | ||
|-valign="top" style="background:LightSkyBlue" | |-valign="top" style="background:LightSkyBlue" | ||
| ''Sea Level change'' | | ''Sea Level change'' | ||
| SPECMAP | | SPECMAP | ||
| SPECMAP improvements? Text file, also in NetCDF | | SPECMAP improvements? Text file, also in NetCDF | ||
| + | |N/A | ||
| + | |meter | ||
|-valign="top" | |-valign="top" | ||
| ''Mean Annual Temperature'' | | ''Mean Annual Temperature'' | ||
| Line 117: | Line 121: | ||
| Shapiro and Ritzwoller 2004 | | Shapiro and Ritzwoller 2004 | ||
| Fox Maule et al. 2005 is likely better | | Fox Maule et al. 2005 is likely better | ||
| + | |basal_heat_flux | ||
| + | |watts/meter^2 | ||
|-valign="top" | |-valign="top" | ||
| ''Future Precipitation Forcing'' | | ''Future Precipitation Forcing'' | ||
Revision as of 15:49, 31 March 2009
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:
|
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? |
