MITgcm Model Outputs for the ocean in Pine Island Bay between 2011 and 2021

These are MITgcm ocean model outputs under Pine Island Glacier Ice Shelf. The simulations were designed to investigate the relative role of ocean conditions and ice shelf geometric changes between 2011 and 2021. Each set of runs contains one run for each year. BOTH-2011 to BOTH-2021 contain annual runs using the ocean and geometry from the corresponding year, OCEAN-2011 to OCEAN-2021 contain annual runs using the annual ocean conditions and 2012 ice shelf geometry and GEOM-2011 to GEOM-2021 contain annual runs using the 2012 ocean conditions and the annual ice shelf geometry. The ice shelf geometries used are derived from CryoSat-2 Digital Elevation Models (Lowery et al., 2025) and converted to ice shelf draft by assuming the ice is in hydrostatic equilibrium. The ocean boundary conditions are from observations from two moorings in Pine Island Bay. The output data contain fields of potential temperature, salinity, velocity and 2D variables from the boundary layer such as freshwater flux, thermal driving and sub-ice shelf velocity.





The work took place as part of the Natural Environment Research Council (NERC) Satellite Data in Environmental Science (SENSE) Centre for Doctoral Training (grant no. NE/T00939X/1).

Simple

Date (Creation)
2025-11-26
Date (Revision)
2025-11-26
Date (Publication)
2025-11-26
Date (released)
2025-11-26
Edition

1.0
Unique resource identifier
https://doi.org/10.5285/cbc6eb20-de95-457d-9000-c78b0ae9ee51
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doi
Unique resource identifier
GB/NERC/BAS/PDC/02118
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https://data.bas.ac.uk/

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NE/T00939X/1
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award
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Please cite this item as: Lowery, K., Holland, P., Dutrieux, P., Hogg, A., & Gourmelen, N. (2025). MITgcm Model Outputs for the ocean in Pine Island Bay between 2011 and 2021 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/cbc6eb20-de95-457d-9000-c78b0ae9ee51

Credit

No credit.
Status
Completed
Point of contact
Organisation name Individual name Electronic mail address Role
British Antarctic Survey Lowery, Katie Author
British Antarctic Survey Holland, Paul Author
British Antarctic Survey Dutrieux, Pierre Author
University of Leeds Hogg, Anna Author
University of Edinburgh Gourmelen, Noel 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

  • Ice shelves

  • Ice-ocean interactions

  • Ocean modelling
Place

  • Pine Island Glacier, Amundsen Sea Antarctica

GEMET - INSPIRE themes, version 1.0
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public access limited according to Article 13(1)(e) of the INSPIRE Directive
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Open Government Licence v3.0
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Data supplied under Open Government Licence v3.0
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Data under embargo until the publication of the associated paper
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doi
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url
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url
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dependency
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url
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url
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Unique resource identifier
doi
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doi
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Spatial representation type
Text, table
Language
English
Character set
UTF8
Topic category
  • Environment
  • Oceans
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Begin date
2011-01-01
End date
2021-12-31
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
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Organisation name Individual name Electronic mail address Role

European Petroleum Survey Group

EPSGadministrator@iogp.org

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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

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 		http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=cbc6eb20-de95-457d-9000-c78b0ae9ee51

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Methodology:

This is output from the MITgcm ocean model, code checkpoint c68i. The simulations were run on the ARCHER2 super-computing cluster. The model used bathymetry from BedMachine v3, with amendments based on observations from Dutrieux et al. (2014). Any masked values represent seabed or ice. The full model setup can be found here: Lowery, K., Holland, P., & Dutrieux, P. (2025). Model setup for simulations of melting beneath Pine Island Glacier Ice Shelf. Zenodo. https://doi.org/10.5281/zenodo.17206842





Each runs from the three different configurations (BOTH, OCEAN and GEOM) consists of five files:



- potentialTemperature.nc: contains the potential temperature output of the model. Variables are:



*theta: sea water potential temperature in Celsius



*time: time in seconds



*x: projection x coordinate in the local model coordinate system in meters



*y: projection y coordinate in the local model coordinate system in meters



*z: depth in meters



- salinity.nc: contains the sea water salinity output of the model. Variables are:



*salt: sea water salinity in psu



*time: time in seconds



*x: projection x coordinate in the local model coordinate system in meters



*y: projection y coordinate in the local model coordinate system in meters



*z: depth in meters



- twoDvariables.nc: contains the 2D variables that are at the interface between the ice and the ocean. The variables are:



*freshwaterFlux: ice shelf freshwater flux in kg m2 s-1



*thermalDriving: subice temperature above freezing in degrees Celsius



*time: time in seconds



*uVelBoundaryLayer: subice ocean velocity in the x direction in m/s



*vVelBoundaryLayer: subice ocean velocity in the y direction in m/s



*x: projection x coordinate in the local model coordinate system in meters



*y: projection y coordinate in the local model coordinate system in meters



- uVelocity.nc: contains the x component of the ocean velocity. Variables are:



*uVel: ocean velocity in x direction in m/s



*time: time in seconds



*x: projection x coordinate in the local model coordinate system in meters



*y: projection y coordinate in the local model coordinate system in meters



*z: depth in meters



- vVelocity.nc: contains the y component of the ocean velocity. Variables are:



*vVel: ocean velocity in y direction in m/s



*time: time in seconds



*x: projection x coordinate in the local model coordinate system in meters



*y: projection y coordinate in the local model coordinate system in meters



*z: depth in meters



For conversion, the grid.csv needs to be used for conversion in latitude/longitude

Data collection:

MITgcm ocean model, code checkpoint c68i.



Full code available on Zenodo: https://doi.org/10.5281/zenodo.17206842

Data quality:

The results of the model were compared with satellite-basal melt rate. Full description of the comparison can be found in Lowery et al (2026)

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English
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dataset
Date stamp
2025-11-26
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ISO 19115 Geographic Information - Metadata
Metadata standard version

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

polardatacentre@bas.ac.uk

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Keywords

Ice shelves Ice-ocean interactions Ocean modelling
GEMET - INSPIRE themes, version 1.0

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

EARTH SCIENCE > Cryosphere > Sea Ice > Ice Growth/Melt EARTH SCIENCE > Oceans > Sea Ice > Ice Growth/Melt


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