Sentinel-6A AMR-C: Geophysical Parameters for Ocean Altimetry

Reprocessed Level 2 non-time critical geophysical data from the Sentinel-6A Michael Freilich spacecraft's Advanced Microwave Radiometer, with a 60-day latency. The dataset includes surface type, wind speed, water vapor, brightness temperature, sigma0, and wet troposphere measurements, interpolated to correspond with Poseidon-4 SAR altimetry intervals to supply environmental corrections. This product is analogous to the Jason-3 GDR geophysical data record.

Use Cases

• Calculating wet tropospheric corrections for precise sea surface height measurements based on water vapor data.
• Analyzing ocean surface wind speed conditions for meteorological and ocean wave studies.
• Characterizing surface type (land/water/ice) for data filtering and validation in coastal regions.
• Calibrating and validating satellite altimeter data using the interpolated geophysical parameters.

Strengths

• Provides a reprocessed, non-time critical (NTC) product for higher-quality, validated geophysical parameters.
• Data is specifically interpolated to align with altimetry measurements, ensuring direct applicability for correction models.
• Cross-platform presence on data.gov and NASA Earthdata signals established importance and reliability.

Limitations

• Column names and specific data structure are not provided in any source description.
• Dataset size and row counts are unknown across all platforms, limiting assessment of scale.
• License is ambiguously listed as 'other-license-specified' without explicit terms.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

Satellite remote sensing from the Advanced Microwave Radiometer (AMR-C) on the Sentinel-6A Michael Freilich spacecraft.

Time Range

null

Freshness

2026-04-09 22:05:37.202894

Geography

Global ocean coverage from satellite observations.