European Space Agency, 2023, FDR4ALT Land-Ice Thematic Data Product. Version 1.0.
This is the Land Ice Thematic Data Product (TDP) V1 resulting from the _$$ESA FDR4ALT project$$ https://www.fdr4alt.org/ and containing estimates of ice sheet surface elevation and associated uncertainties.
The collection covers data for three different missions: ERS-1, ERS-2 and Envisat, and based on Level 1 data coming from previous reprocessing (ERS REAPER and the Envisat V3.0) but taking into account the improvements made at Level 0/Level 1 in the frame of FDR4ALT (_$$ALT FDR$$ https://earth.esa.int/eogateway/catalog/fdr-for-altimetry).
The Land Ice TDP focuses specifically on the ice sheets of Greenland and Antarctica, providing these data in different files.
For many aspects, the Land Ice Level 2 and Level 2+ processing is very innovative:
Improved relocation approach correcting for topographic effects within the beam footprint to identify the Point of Closest Approach
Homogeneous timeseries of surface elevation measurements at regular along-track reference nodes.
The FDR4ALT products are available in NetCDF format. Free standard tools for reading NetCDF data can be used.
Information for expert altimetry users is also available in a dedicated NetCDF group within the products.
Please consult the _$$FDR4ALT Product User Guide$$ https://earth.esa.int/eogateway/documents/d/earth-online/fdr4alt-products-user-guide before using the data.
The FDR4ALT datasets represent the new reference data for the ERS/Envisat altimetry missions, superseding any previous mission data. Users are strongly encouraged to make use of these datasets for optimal results.
Collection
10.5270/esa-02d6cbf
ESA/ESRIN Largo Galileo Galilei 1 00044 Frascati Italy tel:39 06 94180777 eohelp@eo.esa.int https://earth.esa.int