EOLIS (Elevation Over Land Ice from Swath) is part of the ESA CryoSat ThEMatic PrOducts (CryoTEMPO) initiative, that aims to support a wide variety of end-users working in the areas of sea ice, polar oceans, land ice, coastal areas and hydrology. The EOLIS products exploit CryoSat’s SARIn mode and the novel swath processing technique to deliver increased spatial and temporal coverage of time-dependent elevation over land ice, a critical metric for tracking ice mass trends.


The data provided by this project aims to:

• Target a wider community of scientific end–users, outside the usual altimetry expert groups (e.g. modellers, Climate/Operational services);
• Be high level (~L2+/CEOS-ARD), user-friendly and simple, including no more than 6-7 parameters including uncertainty estimates;
• Quickly evolve and reflect the most recent scientific outcomes, being generated alongside CryoSat’s core Payload Data Ground Segment (PDGS) products;
• Be easily accessible from a user-friendly interface.

SWATH THEMATIC POINT PRODUCT (EOLIS POINTS)

SWATH THEMATIC GRIDDED PRODUCT (EOLIS DEM)

Current release version for the CryoTEMPO-EOLIS data products is: 1.2

Point Product:

Gridded Product:

The recommended citation for the EOLIS product is:

“EOLIS elevation data generated using swath processing of CryoSat data (Gourmelen, N., Escorihuela, M., Shepherd, A., Foresta, L., Muir, A., Garcia-Mondejar, A., Roca, M., Baker, S., & Drinkwater, M. R. (2018)) and provided by the ESA CryoTEMPO project (https://cryotempo-eolis.org/).”

Reference Paper: 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

Version 1:

• 1.1: Greenland and Antarctic Ice Sheets.
• 1.2: Addition of the Mountain Glacier regions.