Digital Elevation Models and Basal Melt Maps of Pine Island Glacier Ice Shelf using CryoSat-2 Surface Elevation data, 2011-2023
GB/NERC/BAS/PDC/01973
Abstract:
This dataset provides Digital Elevation Models (DEMs) and Lagrangian Basal Melt Maps of Pine Island Glacier. DEMs were created using CryoSat-2 SARIn swath processed surface elevation data and cover 2011-2023. Melt Maps were calculated using the Lagrangian method using ITS_LIVE annual velocity datasets and cover 2012-2022.
Katie Lowery was supported by the Natural Environment Research Council (NERC) Satellite Data in Environmental Science (SENSE) Centre for Doctoral Training (grant no. NE/T00939X/1).
Citation:
Lowery, K., Dutrieux, P., Holland, P., Hogg, A., Gourmelen, N., & Wallis, B. (2025). Digital Elevation Models and Basal Melt Maps of Pine Island Glacier Ice Shelf using CryoSat-2 Surface Elevation data, 2011-2023 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/d093b7b9-f590-48dd-8206-74d239cdbf30
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License
| Access: | No restrictions apply. |
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| Use: | Data supplied under Open Government Licence v3.0 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/. |
Basic Information
| Creation Date: | 2025-01-07 |
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| Dataset Progress: | Complete |
| Dataset Language: | English |
| ISO Topic Categories: |
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| Parameters: |
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Additional Information
| Reference: | Lowery, K., Dutrieux, P., Holland, P. R., Hogg, A. E., Gourmelen, N., & Wallis, B. J. (2025). Spatio-temporal melt and basal channel evolution on Pine Island Glacier ice shelf from CryoSat-2. The Cryosphere, 19(10), 4893-4911. https://doi.org/10.5194/tc-19-4893-2025 | |
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| Quality: | Although the data is posted monthly, each DEM contains a years worth of CryoSat-2 elevation observations which have been time centred on the given month. Each melt map contains a combination of 3 year's worth of elevation data. In the earlier parts (prior to 2014) of the dataset, some areas of the ice shelf are missing. This is because of a lack of accurate velocity data in these areas. Missing values are expressed as NaN in the netCDF files. |
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| Lineage/Methodology: | DEMs were created using a time-centering method applied to CryoSat-2 SARIn swath processed surface elevation measurements. The dataset contains monthly DEMs, though data within 6 months of the posted month have been used. DEMs have a spatial resolution of 250 m. Elevation is given as height above the WGS84 ellipsoid. Basal melt maps have been calculated using the Lagrangian method. Advection and divergence in this equation were taken from ITS_LIVE annual datasets and surface mass balance changes from RACMO model outputs. Melt maps are also at a 250 m spatial resolution. CryoSat-2 SARIn data was accessed in March 2023. ITS_LIVE velocity data prior to 2019 was downloaded in October 2023, using v1. Datasets from 2019 were downloaded in June 2024 and v2 are used. RACMO2.3p2 output forced the IMAU-FDM v1.2A firn model. |
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Extent
| Temporal Coverage: | |
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| Start Date | 2011-07-01 |
| End Date | 2023-07-31 |
| Start Date | 2012-07-01 |
| End Date | 2022-12-31 |
| Spatial Coverage: | |
| Latitude | |
| Southernmost | -75.38 |
| Northernmost | -74.46 |
| Longitude | |
| Westernmost | -103.03 |
| Easternmost | -98.4 |
| Altitude | |
| Min Altitude | N/A |
| Max Altitude | N/A |
| Depth | |
| Min Depth | N/A |
| Max Depth | N/A |
| Data Resolution: | |
| Latitude Resolution | 250 m |
| Longitude Resolution | 250 m |
| Horizontal Resolution Range | 250 meters - < 500 meters |
| Vertical Resolution | N/A |
| Vertical Resolution Range | N/A |
| Temporal Resolution | Monthly |
| Temporal Resolution Range | Monthly - < Annual |
| Location: | |
| Location | Antarctica |
| Detailed Location | Pine Island Glacier, Amundsen Sea |
Storage
| Distribution: | |
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| Distribution Media | Online Internet (HTTP) |
| Distribution Size | 445 MB |
| Distribution Format | netCDF |
| Fees | N/A |