CryoSat Satellite Altimetry Products for Ice and Ocean Monitoring

CryoSat products from the European Space Agency (ESA) contain radar altimeter measurements from the SIRAL instrument for monitoring ice sheets, sea ice, and ocean surfaces. The collection includes Level 1B, Level 2, and CryoTEMPO products with varying latencies from near-real-time (2-3 hours) to offline processing (30 days). ESA generates these datasets to support cryospheric and oceanographic research.

Use Cases

• Calculate sea-ice freeboard and thickness using SAR/InSAR-derived surface height from Level 2 ice products.
• Monitor ice sheet elevation change over time with geo-location and corrected height measurements in consolidated GDR products.
• Analyze ocean surface topography and dynamic ocean topography from range and geophysical corrections in GOP and IOP products.
• Assess near-real-time ocean conditions for operational services using FDM products generated 2-3 hours after acquisition.
• Study radar backscatter and waveform characteristics for different surface types using SIRAL measurements in Level 1B products.

Strengths

• Includes consolidated ice products (GDR) that merge LRM, SAR, and SARIn measurements over full orbits.
• Offers multiple processing levels and latencies, from near-real-time (2-3 hours) to definitive products (30 days).
• Products contain applied calibration corrections and provided geophysical corrections for range calculation.

Limitations

• Specific row counts, file sizes, and spatial resolution details for individual products are not provided.
• Access requires registration with the data provider, which may impose usage restrictions.

Provenance

Source

European Space Agency (ESA) CryoSat mission.

Collection Method

Data collected by the SAR/Interferometric Radar Altimeter (SIRAL) satellite instrument, with positioning from DORIS and star trackers.

Time Range

Covers the operational lifetime of the CryoSat mission; specific start and end dates are not provided.

Freshness

Update frequency varies by product type, from near-real-time (hours) to offline (monthly) processing.

Geography

Global coverage, with specific focus on polar ice sheets, sea ice regions, and global oceans.