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Description

Provides reprocessed L1A high resolution (HR) non-time critical (NTC; 60-day latency) altimetry intermediate outputs from the Poseidon-4 SAR altimeter on the Sentinel-6A Michael Freilich spacecraft, which are geo-located bursts of Ku-band echoes (at ~140 Hz) with all instrument calibrations applied and full rate complex waveforms for delay/Doppler or HR processing. 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 ,
GNSS-RO RECEIVER ,
Star Tracker
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
C3332203773-POCLOUD
Data State
ACTIVE
Number of Files/Granules
53838
Processing Level
1A
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 L1A P4 Altimeter High Resolution (HR) NTC Intermediate Outputs with Instrument Calibrations G01 [Dataset]. NASA Physical Oceanography Distributed Active Archive Center. https://doi.org/10.5067/S6AP4-1AHNTR-G01 Date Accessed: 2026-09-21

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