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Description

Provides L2P high resolution (HR) non-time critical (NTC; 60-day latency) altimetry from the Poseidon-4 SAR altimeter on the Sentinel-6A Michael Freilich spacecraft, and contains L2-equivalent geophysical sea-state data at a slightly different latency than the other L2 NRT products. The sea-state data were derived from L1B altimetry, and include range, orbital altitude, time, and water vapour. Environmental and geophysical corrections, significant wave height, and wind-speed information are supplied by the AMR-C. The S6A NTC product is analogous to the Jason-3 GDR product.

Product Summary

Platforms
Sentinel-6A
Instruments
Poseidon-4 Radar Altimeter ,
AMR-C ,
DORIS ,
GNSS RECEIVER
Projects
Sentinel-6
Spatial Extent

N: 66.15 S: -66.15 E: 180 W: -180

Location
GLOBAL ,
GLOBAL OCEAN
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2020-11-30
Data Partner
Physical Oceanography Distributed Active Archive Center, Jet Propulsion Laboratory, NASA (NASA/JPL/PODAAC)
Concept ID
C3332203797-POCLOUD
Data State
ACTIVE
Number of Files/Granules
13133
Processing Level
2P
Science Keywords
Sea Surface Height ,
Significant Wave Height

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Ocean Surface Topography Science Team. (2025). Sentinel-6A MF Jason-CS L2P P4 Altimeter High Resolution (HR) NTC Ocean Surface Topography G01 [Dataset]. NASA Physical Oceanography Distributed Active Archive Center. https://doi.org/10.5067/S6AP4-2PHNTR-G01 Date Accessed: 2026-09-12

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