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Sea Surface Topography Data Access and Tools

Sea Surface Topography Datasets

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Dataset Sort descending	Version	Platform	Instrument	Temporal Extent	Spatial Extent	Spatial Resolution	Data Format
Sentinel-6B/Jason-CS L1B P4 Altimeter High Resolution (HR) STC Geolocated Waveforms	G	Sentinel-6B	Poseidon-4 Radar Altimeter	2025-11-17	N: 66.15 S: -66.15 E: 180 W: -180		netCDF-4
Sentinel-6B/Jason-CS L1B P4 Altimeter Low Resolution (LR) STC Geolocated Waveforms	G	Sentinel-6B	Poseidon-4 Radar Altimeter	2025-11-17	N: 66.15 S: -66.15 E: 180 W: -180		netCDF-4
Sentinel-6B/Jason-CS L2 Advanced Microwave Radiometer (AMR-C) NRT Geophysical Parameters	G	Sentinel-6B	AMR	2025-11-17	N: 66.15 S: -66.15 E: 180 W: -180		netCDF-4
Sentinel-6B/Jason-CS L2 Advanced Microwave Radiometer (AMR-C) STC Geophysical Parameters	G	Sentinel-6B	AMR	2025-11-17	N: 66.15 S: -66.15 E: 180 W: -180		netCDF-4
Sentinel-6B/Jason-CS L2 P4 Altimeter High Resolution (HR) NRT Ocean Surface Topography	G	Sentinel-6B	Poseidon-4 Radar Altimeter, AMR-C, DORIS, GNSS RECEIVER	2025-11-17	N: 66.15 S: -66.15 E: 180 W: -180		netCDF-4
Sentinel-6B/Jason-CS L2 P4 Altimeter High Resolution (HR) NRT Reduced Ocean Surface Topography	G	Sentinel-6B	Poseidon-4 Radar Altimeter, AMR-C, DORIS, GNSS RECEIVER	2025-11-17	N: 66.15 S: -66.15 E: 180 W: -180		netCDF-4
Sentinel-6B/Jason-CS L2 P4 Altimeter High Resolution (HR) STC Ocean Surface Topography	G	Sentinel-6B	Poseidon-4 Radar Altimeter, AMR-C, DORIS, GNSS RECEIVER	2025-11-17	N: 66.15 S: -66.15 E: 180 W: -180		netCDF-4
Sentinel-6B/Jason-CS L2 P4 Altimeter High Resolution (HR) STC Reduced Ocean Surface Topography	G	Sentinel-6B	Poseidon-4 Radar Altimeter, AMR-C, DORIS, GNSS RECEIVER	2025-11-17	N: 66.15 S: -66.15 E: 180 W: -180		netCDF-4
Sentinel-6B/Jason-CS L2 P4 Altimeter Low Resolution (LR) NRT Ocean Surface Topography	G	Sentinel-6B	Poseidon-4 Radar Altimeter, DORIS, GNSS RECEIVER, AMR	2020-12-07 to Present	N: 66.15 S: -66.15 E: 180 W: -180		netCDF-4
Sentinel-6B/Jason-CS L2 P4 Altimeter Low Resolution (LR) NRT Reduced Ocean Surface Topography	G	Sentinel-6B	Poseidon-4 Radar Altimeter, AMR-C, DORIS, GNSS RECEIVER	2025-11-17	N: 66.15 S: -66.15 E: 180 W: -180		netCDF-4
Sentinel-6B/Jason-CS L2 P4 Altimeter Low Resolution (LR) STC Ocean Surface Topography	G	Sentinel-6B	Poseidon-4 Radar Altimeter, AMR-C, DORIS, GNSS RECEIVER	2025-11-17	N: 66.15 S: -66.15 E: 180 W: -180		netCDF-4
Sentinel-6B/Jason-CS L2 P4 Altimeter Low Resolution (LR) STC Reduced Ocean Surface Topography	G	Sentinel-6B	Poseidon-4 Radar Altimeter, AMR-C, DORIS, GNSS RECEIVER	2025-11-17	N: 66.15 S: -66.15 E: 180 W: -180		netCDF-4
SWOT 2019-2020 Prelaunch Oceanography Field Campaign JPL Global Positioning Systems (GPS)	1.0	BUOYS	GPS	2019-09-05 to 2020-01-19	N: 36.2 S: 35.8 E: -125 W: -125.2		netCDF-4
SWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product - Basic, Version C	2.0	SWOT	KaRIn, Jason-class Altimeter, AMR, DORIS, GPSP, LRA	2022-12-16	N: 90 S: -90 E: 180 W: -180	2 Kilometers x 2 Kilometers 250 Meters x 250 Meters	netCDF-4
SWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product - Basic, Version D	D	SWOT	KaRIn, Jason-class Altimeter, AMR, DORIS, GPSP, LRA	2022-12-16	N: 90 S: -90 E: 180 W: -180	2 Kilometers x 2 Kilometers 250 Meters x 250 Meters	netCDF-4
SWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product - Expert, Version C	2.0	SWOT	KaRIn, Jason-class Altimeter, AMR, DORIS, GPSP, LRA	2022-12-16	N: 90 S: -90 E: 180 W: -180	2 Kilometers x 2 Kilometers 250 Meters x 250 Meters	netCDF-4
SWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product - Expert, Version D	D	SWOT	KaRIn, Jason-class Altimeter, AMR, DORIS, GPSP, LRA	2022-12-16	N: 90 S: -90 E: 180 W: -180	2 Kilometers x 2 Kilometers 250 Meters x 250 Meters	netCDF-4
SWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product - Unsmoothed, Version C	2.0	SWOT	KaRIn, Jason-class Altimeter, AMR, DORIS, GPSP, LRA	2022-12-16	N: 90 S: -90 E: 180 W: -180	2 Kilometers x 2 Kilometers 250 Meters x 250 Meters	netCDF-4
SWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product - Unsmoothed, Version D	D	SWOT	KaRIn, Jason-class Altimeter, AMR, DORIS, GPSP, LRA	2022-12-16	N: 90 S: -90 E: 180 W: -180	2 Kilometers x 2 Kilometers 250 Meters x 250 Meters	netCDF-4
SWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product - WindWave, Version C	2.0	SWOT	KaRIn, Jason-class Altimeter, AMR, DORIS, GPSP, LRA	2022-12-16	N: 90 S: -90 E: 180 W: -180	2 Kilometers x 2 Kilometers 250 Meters x 250 Meters	netCDF-4
SWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product - WindWave, Version D	D	SWOT	KaRIn, Jason-class Altimeter, AMR, DORIS, GPSP, LRA	2022-12-16	N: 90 S: -90 E: 180 W: -180	2 Kilometers x 2 Kilometers 250 Meters x 250 Meters	netCDF-4
SWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product, Version C	2.0	SWOT	KaRIn, Jason-class Altimeter, AMR, DORIS, GPSP, LRA	2022-12-16	N: 90 S: -90 E: 180 W: -180	2 Kilometers x 2 Kilometers 250 Meters x 250 Meters	netCDF-4
SWOT Level 2 KaRIn Low Rate Sea Surface Height Data Product, Version D	D	SWOT	KaRIn, Jason-class Altimeter, AMR, DORIS, GPSP, LRA	2022-12-16	N: 90 S: -90 E: 180 W: -180	2 Kilometers x 2 Kilometers 250 Meters x 250 Meters	netCDF-4
SWOT Level 2 KaRIn Low Rate Sea Surface Height Pre Crossover Data Product - Basic, Version D	D	SWOT	KaRIn, Jason-class Altimeter, AMR, DORIS, GPSP, LRA	2022-12-16	N: 90 S: -90 E: 180 W: -180	2 Kilometers x 2 Kilometers 250 Meters x 250 Meters	netCDF-4
SWOT Level 2 KaRIn Low Rate Sea Surface Height Pre Crossover Data Product - Expert, Version D	D	SWOT	KaRIn, Jason-class Altimeter, AMR, DORIS, GPSP, LRA	2022-12-16	N: 90 S: -90 E: 180 W: -180	2 Kilometers x 2 Kilometers 250 Meters x 250 Meters	netCDF-4

An artist's rendition of the SWOT satellite emitting radar pulses to Earth's surface.

NASA's Surface Water and Ocean Topography (SWOT) Mission Data Release

Recently released datasets from the SWOT mission provide scientists with previously unavailable measurements of Earth's surface water.

9 MIN READ

Webinar thumbnail for the SWOT webinar to be held on March 20, 2024.

Accessing Data for the World's Water with SWOT

Learn how to discover, access, and use Surface Water and Ocean Topography (SWOT) mission data and how these data can lead to new, innovative science and applications in the world of water.

Global coverage of the Surface Water and Ocean Topography (SWOT) River Reach collection highlighting its 21 day global cycle of Water Surface Elevation (WSE).

From Space to Solutions: Access, Visualization, and Analysis Services for SWOT Hydrology

Join us on Wed., July 30 at 2:00 p.m. EDT (-04:00 UTC) to explore SWOT hydrology data collections of rivers and lakes, and to learn how to work with SWOT hydrology data using tools provided by both NASA's PO.DAAC and the USGS.

Earthdata graphic identifier on top of satellite image of Earth

Hydrocron: A New Tool for SWOT Time Series Analysis

Hydrocron enables users to receive all Surface Water and Ocean Topography (SWOT) observations for a specific river ID within a specified date range.

Sea Surface Topography Data Tools

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Items

Tool Sort descending	Description	Services
Hydrocron	Hydrocron is an API that repackages hydrology datasets from SWOT into formats that make time-series analysis easier.	Subsetting, Visualization
SWOT Swath Visualizer	The Surface Water and Ocean Topography (SWOT) Swath Visualizer provides a visualization of two instruments’ coverage of Earth's surface: the Ka-band Radar Interferometer and altimeter.	Analysis, Data Curation, Visualization

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