The Sea-Ice Thematic Data Products (TDP) are taking into account the improvements made in the frame of the REAPER project and the ENVISAT reprocessing 3.0.
The Sea-Ice TDP are also taking into account the improvements made at Level 0/Level 1 in the frame of FDR4ALT (ALT FDR).
The Sea-Ice TDP propose products containing sea-ice freeboard and sea-ice thickness with a common product definition. An uncertainty value has been computed for each measurement.
Data Access
A test dataset (two full cycles of ENVISAT data) is available via ftp :
FTP adress :ftp.cls.fr
Login :FDR4ALT
Password: Sent separately
Sea-Ice TDP is available under /Test Data Set/TDP_SI/
Please contact fpiras@groupcls.com to obtain the password.
Official products will be released at the end of the project (March 2023)
Will be available at the end of the project (March 2023)
Processing & Algorithms
- Deblurring algorithm on ERS echoes : Theoretical approach based on the methodology detailed in [Peacock,2004]
- ENVISAT freeboard calibration using a novel neural-network approach
- ERS freeboard calibration
Improvements compared to existing products
Preliminary results on the ENVISAT freeboard correction show good performances on a testing period (March 2012) :
For the first time, ERS-2, ERS-1 and ENVISAT have been processed in a homogeneous way, allowing to product the first Arctic radar freeboard time series from ERS-1 to Cryosat-2 :
People in charge
LEGOS : sara.fleury@legos.obs-mip.fr
FMI : eero.rinne@fmi.fi
Documentation
Bocquet, M., Fleury, S., Piras, F., Rinne, E., Sallila, H., Garnier, F., and Rémy, F.: Arctic sea ice radar freeboard retrieval from ERS-2 using altimetry: Toward sea ice thickness observation from 1995 to 2021, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2022-214, 2022.