Forward simulations of the Amundsen Sea Sector of West Antarctica at different resolutions produced from the ice sheet model WAVI

This dataset contains simulations produced by the ice sheet model WAVI (Wavelet-based Adaptive-grid Vertically-integrated Ice-model), presented as netCDF files. The model domain is the Amundsen Sea Sector of the West Antarctic Ice sheet, including Pine Island Glacier, Thwaites Glacier and the ice streams that flow into the Crossen and Dotson Ice Shelves. The simulations start from initialised states representing approximately the year 2015 and are run for 150 years into the future. The WAVI model is a publicly available open source model written in Julia (Bradley et al., 2024). The initialised states are computed in the Matlab version of WAVI, following methods in Arthern et al. (2015) and Arthern and Williams (2017). These simulations were produced by the authors to study the effects of spatial model resolution and basal melt rates on projections of sea level contribution from this region.





Funding was provided by NERC Feasibility Study Grant (Ref: 2021DTUC3Hosking) and ITGC THHWAITES-MELT (NE/S006656/1).

Simple

Date (Creation)
2023-12-20
Date (Revision)
2023-12-20
Date (Publication)
2023-12-20
Date (released)
2023-12-20
Edition

1.0
Unique resource identifier
https://doi.org/10.5285/4de39bc0-fc2b-4232-ac39-3cc1fd723f64
Codespace

doi
Unique resource identifier
GB/NERC/BAS/PDC/01810
Codespace

https://data.bas.ac.uk/

Unique resource identifier
NE/S006656/1
Codespace

award
Other citation details

Please cite this item as: Williams, C. R., Arthern, R., & Byrne, J. (2024). Forward simulations of the Amundsen Sea Sector of West Antarctica at different resolutions produced from the ice sheet model WAVI (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/4de39bc0-fc2b-4232-ac39-3cc1fd723f64

Credit

No credit.
Status
Completed
Point of contact
Organisation name Individual name Electronic mail address Role
British Antarctic Survey Williams, C Rosie Author
British Antarctic Survey Arthern, Robert Author
British Antarctic Survey Byrne, James Author
NERC EDS UK Polar Data Centre

PDCServiceDesk@bas.ac.uk

Point of contact
Maintenance and update frequency
As needed
Maintenance note
Completed
Global Change Master Directory (GCMD) Science Keywords
Theme

  • Amundsen Sea

  • ITGC

  • WAVI

  • ice flow

  • simulations
Place

  • Amundsen Sea sector of West Antarctica Antarctica

GEMET - INSPIRE themes, version 1.0
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no limitations to public access
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no limitations
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License
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Open Government Licence v3.0
Use constraints
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Data supplied under Open Government Licence v3.0
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No restrictions apply.
Unique resource identifier
url
Codespace

url
Association Type
Larger work citation
Unique resource identifier
url
Codespace

url
Association Type
Larger work citation
Unique resource identifier
doi
Codespace

doi
Association Type
Cross reference
Unique resource identifier
doi
Codespace

doi
Association Type
Cross reference
Unique resource identifier
doi
Codespace

doi
Association Type
Cross reference
Unique resource identifier
doi
Codespace

doi
Association Type
Cross reference
Unique resource identifier
url
Codespace

url
Association Type
Cross reference
Unique resource identifier
doi
Codespace

doi
Association Type
dependency
Spatial representation type
Text, table
Language
English
Character set
UTF8
Topic category
  • Elevation
  • Environment
  • Geoscientific information
  • Imagery base maps earth cover
  • Inland waters
  • Oceans
N
S
E
W
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Vertical extent

Minimum value
0.0
Maximum value
5.0

Vertical CS

No information provided.

Vertical datum

No information provided.
Supplemental Information

It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk.

Title

European Petroleum Survey Group (EPSG) Geodetic Parameter Registry
Date (Publication)
2008-11-12
Cited responsible party
Organisation name Individual name Electronic mail address Role

European Petroleum Survey Group

EPSGadministrator@iogp.org

Publisher
Unique resource identifier
urn:ogc:def:crs:EPSG::3031
Version

6.18.3

Distributor

Distributor contact
Organisation name Individual name Electronic mail address Role
NERC EDS UK Polar Data Centre

PDCServiceDesk@bas.ac.uk

Distributor
Distributor format
Name Version
application/x-hdf
application/netcdf
Units of distribution

bytes
Transfer size
296352743424
OnLine resource
Protocol Linkage Name

WWW:LINK-1.0-http--link

 		http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=4de39bc0-fc2b-4232-ac39-3cc1fd723f64

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bytes
Transfer size
296352743424
OnLine resource
Protocol Linkage Name

WWW:LINK-1.0-http--link

 		http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=4de39bc0-fc2b-4232-ac39-3cc1fd723f64

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Dataset
Statement

Methodology:

These simulations explore the effects of spatial model resolution on sea level projections. We take the bedmachine version 3 data set at 500 metre resolution and resample in order to get the required resolution. For each resolution lower than 500 metres, there are thus numerous different bed realisations. We select a number of these at each resolution, as described in Williams et al. (2023). The bed topography is included in each netCDF file, along with a bed_ref scalar coordinate variable to identify it (numerical value used to distinguish between different bed realisations at each resolution). Details of all other datasets can be found in Williams et al. (2023).





The initial states for the forward simulations were performed using codes written in the Matlab version of WAVI, using methods described previously in Arthern et al. 2015 and Arthern and Williams 2017. This method uses inverse methods to find the basal drag and ice viscosity parameters that allow the model to agree as well as possible with satellite observations (included in each netCDF file as two-dimensional WeertmanC and damage fields). Once these flow parameters have been found, these initial states can be used to start temporally evolving forward simulations under different parameter forcings (all data needed to run forward from an initial state are included in the dataset). The forward simulation data were produced using the WAVI ice sheet model (Bradley et al., 2024), WAVI.jl, available at https://doi.org/10.5281/zenodo.14393522. The basal melt was prescribed using a depth-dependence melt rate parameterisation including in the WAVI.jl package, where the initial average melt rate at time t=0 years was calibrated for each initial state using a parameter denoted gammaT, which is included as a scalar coordinate variable in each netCDF file. Outputs include two-dimensional fields of ice surface, ice thickness, dh/dt, basal melt rate and average speeds every year for 150 years .

Data collection:

Initialisation data processing and modelling was done using MATLAB (Version 2018b). Forward simulations were performed using Julia version 1.6.2. The version of the WAVI model used is identified in https://doi.org/10.5281/zenodo.14393522.

Data quality:

The initialisation algorithm used was evaluated on idealised test cases as described by Arthern and Gudmundsson (2010). Arthern et al (2015) shows maps of discrepancy between model velocity and satellite derived velocity, and histograms of the differences between model elevation changes and elevation changes derived using satellite altimetry. The WAVI.jl package has standard tests to check the performance of the code. These are documented in WAVI.jl/test. A value of -9999 indicates there are no data there.

Metadata

File identifier
4de39bc0-fc2b-4232-ac39-3cc1fd723f64 XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Hierarchy level name

dataset
Date stamp
2023-12-20
Metadata standard name

ISO 19115 Geographic Information - Metadata
Metadata standard version

ISO 19115:2003(E)
Metadata author
Organisation name Individual name Electronic mail address Role
NERC EDS UK Polar Data Centre

polardatacentre@bas.ac.uk

Point of contact
 
 

Overviews

Spatial extent

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Keywords

Amundsen Sea ITGC WAVI ice flow simulations
GEMET - INSPIRE themes, version 1.0

Elevation Hydrography Meteorological geographical features Oceanographic geographical features
Global Change Master Directory (GCMD) Science Keywords

EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Elevation/Ice Sheet Elevation EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Motion/Ice Sheet Motion EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Thickness/Ice Sheet Thickness EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glacier Topography/Ice Sheet Topography EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Glaciers EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Ice Sheets EARTH SCIENCE > Cryosphere > Snow/Ice > Ice Growth/Melt EARTH SCIENCE > Hydrosphere > Glaciers/Ice Sheets > Glacier Elevation/Ice Sheet Elevation EARTH SCIENCE > Hydrosphere > Glaciers/Ice Sheets > Glacier Motion/Ice Sheet Motion EARTH SCIENCE > Hydrosphere > Glaciers/Ice Sheets > Glacier Thickness/Ice Sheet Thickness EARTH SCIENCE > Hydrosphere > Glaciers/Ice Sheets > Glacier Topography/Ice Sheet Topography EARTH SCIENCE > Hydrosphere > Glaciers/Ice Sheets > Glaciers EARTH SCIENCE > Hydrosphere > Glaciers/Ice Sheets > Ice Sheets EARTH SCIENCE > Oceans > Coastal Processes > Sea Level Rise


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