Full Record - Processed model output from an Amundsen Sea MITgcm configuration forced by ERA5 1979-2021

Processed model output from an Amundsen Sea MITgcm configuration forced by ERA5 1979-2021

GB/NERC/BAS/PDC/02095

Abstract:
This dataset includes post-processed model output from an Amundsen Sea regional configuration of MITgcm. The model use ocean, sea ice and ice shelf components. The model is forced by ERA5 from the years 1979-2021, with the exception of 1996 for which ERA Interim is used. The data is used for figures in the research paper "Wind-driven coastal polynya variability drives decadal ice-shelf melt variability in the Amundsen Sea" by Michael Haigh, Paul Holland and Thomas Caton Harrison.

Creation of the dataset was funded by the NERC project "Drivers of Oceanic Change in the Amundsen Sea", NE/T012803/1.

Citation:
Haigh, M. (2025). Processed model output from an Amundsen Sea MITgcm configuration forced by ERA5 1979-2021 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/4b2dee26-0c3a-42d1-8b1f-6797945f1526

Access Data

License

Access:	None.
Use:	Data are supplied under Open Government Licence v.3 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/.

Authors

Name	PDC BAS
Role(s)	Metadata Author
Organisation	British Antarctic Survey

Name	Michael Haigh
Role(s)	Investigator, Technical Contact
Organisation	British Antarctic Survey

Basic Information

Creation Date:	2025-10-22
Dataset Progress:	Complete
Dataset Language:	English
ISO Topic Categories:	Environment Oceans
Parameters:	Oceans > Marine Environment Monitoring Oceans > Sea Ice

Additional Information

Reference:	Michael Haigh, Paul R. Holland, Thomas Caton Harrison and Pierre Dutrieux (2026). Wind-Driven Coastal Polynya Variability Drives Decadal Ice-Shelf Melt Variability in the Amundsen Sea. Geophysical Research Letters. https://doi.org/10.1029/2025GL118546.
Lineage/Methodology:	The data was produced using checkpoint 67s of MITgcm in an Amundsen Sea configuration. The data is post-processed model output and is presented in figures in the associated research paper. The model utilises a grid with 0.1° longitudinal grid spacing. The vertical direction is discretised into 50 levels, with thinnest levels (10 m) near the ocean surface and thickest levels (200 m) near the ocean floor.

Extent

Temporal Coverage:
Start Date	1979-01-01
End Date	2021-12-31

Spatial Coverage:
Latitude
Southernmost	-80
Northernmost	-62
Longitude
Westernmost	-140
Easternmost	-80
Altitude
Min Altitude	N/A
Max Altitude	N/A
Depth
Min Depth	N/A
Max Depth	N/A

Location:
Location	Antarctica
Detailed Location	Amundsen Sea

Storage

Data Storage:	Data are in netCDF format, separated into four directories (one per figure in research paper). There are 47 files with the total volume 71 MB.