The Land-Ice Data Products (TDP) are taking into account the improvements made in the frame of the REAPER project and the ENVISAT reprocessing 3.0.

The Land-Ice Thematic Data Products will propose Level 2+ global product at 20Hz with a common product definition. An uncertainty value will be computed for each measurement.

Data Access

Will be available at the end of the project (end of 2022)

This section contains preliminary results and does not contain all expected improvements. It will be completed and enhanced during the life of the project. 

Echo Relocation strategy : Non-linear method (from Roemer et al, 2007)

Retracking algorithm : Ice-1 or TFMRA (still to be determined)

Improvements compared to existing products

The Non-linear method from Roemer finds the POCA (Point Of Closest Approach) based upon an external DEM. It has been used in many recent studies but is not implemented in ESA ground segments. It makes a better use of new high resolution elevation models (REMA & ArcticDEM).

Compared to the linear slope correction approach used in current ENVISAT and ERS products, preliminary results show that :

  • FDR4ALT products bias is reduced by an order of magnitude compared to ENVISAT V3 (from meters to 10 centimeters)
  • FDR4ALT products dispersion of differences is reduced by more than two-thirds compared to ENVISAT V3 (from 3m to below 1m)