Seamless Annual Gridded Product
Product Overview
The CryoTEMPO-EOLIS seamless gridded product is a annual Digital Elevation Model, on a 500m grid in polar stereographic coordinates. It combines an aggregation of both the EOLIS Thematic point product, and the CryoTEMPO Land Ice POCA dataset, over the full year (centred on July). Data gaps are filled using multiple interpolation methods.
- Platform & Acquisition: CryoSat-2 SARIn mode (EOLIS), CryoSat-2 LRM Mode (CLI POCA)
- Geographic Coverage: Greenland Ice Sheet
- Temporal Coverage – Baseline 3: currently 2025 only. Full backprocessing of the CryoSat-2 time period is underway.
- Temporal Resolution: Annual
- Spatial Resolution: 500m
- Data Format: NetCDF
- Data Contributors: Noel Gourmelen, Livia Jakob, Carolyn Michael, Jerome Bouffard, Alessandro Di Bella, Sophie Dubber, Sarah Appleby, Andrea Incatasciato.
- Cite As – “EOLIS elevation data generated using swath processing of CryoSat-2 data (Gourmelen et al., 2018) and provided by the ESA CryoTEMPO project (https://cryotempo-eolis.org/).”
Gourmelen, N., Escorihuela, M., Shepherd, A., Foresta, L., Muir, A., Garcia-Mondejar, A., Roca, M., Baker, S., & Drinkwater, M. R. (2018). CryoSat-2 swath interferometric altimetry for mapping ice elevation and elevation change. Advances in Space Research, 62(6), 1226-1242. https://doi.org/10.1016/j.asr.2017.11.014
Data Attributes
The annual gridded product contains the following variables:
- time (time in seconds)
- x (geographic coordinate) or lon (degrees)
- y (geographic coordinate) or lat (degrees)
- elevation (metres)
- elevation_uncertainty (metres)
- source
Coordinate reference system:
For Greenland:
- EPSG:3413 || +proj=stere +lat_0=90 +lat_ts=70 +lon_0=-45 +k=1 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs
Documentation
Product Handbook:
The product handbook acts as a user guide and contains high level algorithm descriptions as well as an overview of file structure:
Algorithm Technical Baseline Document:
For more in-depth explanations of underlying algorithms, please refer the Algorithm Technical Baseline Document (ATBD):
Feedback and Queries
Feedback or questions about the CryoTEMPO-EOLIS Thematic Products is welcomed. Please use the following contact details:
E-mail: support@cryotempo-eolis.org
Or alternatively, get in touch using our Contact Form
DOWNLOAD THE DATA
FTP Download:
Use the following link to access the ESA server and directly download any available gridded data
The folder structure on the ESA Science Server is: TEMPO_COMNINED_GRID/YYYY/<ZONE> where ZONE is currently limited to GREENLAND
The file naming convention is: CS_OFFL_THEM_COMB__<ZONE>____<VERSION> where ZONE is the region name e.g. GREENLAND.
