Description of the data product

CryoTEMPO-EOLIS Gridded Product — monthly digital elevation models of land ice
derived from CryoSat-2 SARIn swath interferometric altimetry, produced under the
ESA CryoSat ThEMatic PrOducts (CryoTEMPO) initiative.

• Content: one DEM per region per month on a 2 km polar stereographic grid;
  each monthly file aggregates 3 months of swath elevations on a rolling basis,
  using the CryoTEMPO-EOLIS point product as input. Variables: time, x/y
  (or lon/lat), elevation, elevation_uncertainty,
  elevation_difference_to_reference_dem, elevation_change,
  elevation_change_uncertainty (all elevations in metres).
• Coverage: Greenland Ice Sheet and periphery, Antarctic Ice Sheet Baseline 2: Aug 2010 onwards. Baseline 3 (current, 3.0):
  Dec 2025 onwards, with full backprocessing of the CryoSat-2 record underway.
  Latency ~2 months.
• Format: NetCDF, ~100 km tiles, naming
  CS_OFFL_THEM_GRID_<ZONE>_<YYYY>_<MM>_<X>_<Y>_<VERSION>.
• CRS: EPSG:3413 (Greenland); EPSG:3031 (Antarctica);
• Ownership: European Space Agency. Developed and operated for ESA by
  Earthwave Ltd with the University of Edinburgh and isardSAT. Support:
  support@cryotempo-eolis.org

Location of the data product

Product page: https://cryotempo-eolis.org/gridded-product/
ESA Science Server (FTP): ftp://science-pds.cryosat.esa.int/TEMPO_SWATH_GRID/
(structure: TEMPO_SWATH_GRID/YYYY/MM/<ZONE>)
Query/subsetting portal: https://cs2eo.org/cryotempo

Data DOI

No dataset-level DOI is issued. The provider requests citation of the method
papers instead:

• Ice sheets: Gourmelen, N., et al. (2018), Adv. Space Res. 62(6), 1226–1242.
  https://doi.org/10.1016/j.asr.2017.11.014
• Glaciers: Jakob, L. & Gourmelen, N. (2023), Geophys. Res. Lett. 50(8).
  https://doi.org/10.1029/2023GL102954

Acknowledgement text: "EOLIS elevation data generated using swath processing of
CryoSat-2 data () and provided by the ESA CryoTEMPO project
(https://cryotempo-eolis.org/)."

Metadata

• Mission/sensor: CryoSat-2, SIRAL, SARIn mode
• Processing level: L2+ / CEOS-ARD-like thematic product
• Baseline/version: 3.0 (Baseline 2 remains available)
• Temporal resolution: monthly (3-month rolling window)
• Spatial resolution: 2 km
• Parameters: surface elevation, elevation change, and per-cell uncertainties
• Glacier masks: RGI 7.0 (mountain glacier regions); Rignot et al. (2011) mask
  for Antarctica
• Access: anonymous FTP; no registration required
• Documentation: Product Handbook and ATBD (links below)

Checklist

• This data product is stable (unlikely to change substantially or move)
• This data product is of use to the broader community
• This data product is documented: https://cryotempo-eolis.org/cryotempo_eolis_thematic_product_product_handbook_latest and https://cryotempo-eolis.org/cryotempo-thematicproduct-atbd_latest/
• This data product is licensed under <ESA Earth Observation data terms — confirm>