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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
GRACE/GRACE-FO Level-4 Monthly Global Ocean Mass Anomaly version 01 from NASA MEaSUREs HOMaGE project	1.0	GRACE-FO, GRACE		2002-04-17	N: 90 S: -90 E: 180 W: -180	360 Decimal Degrees x 180 Decimal Degrees	netCDF-4
GRACE/GRACE-FO Level-4 Monthly Gravitational-Rotational-Deformation version 01 from NASA MEaSUREs HOMaGE	1.0	GRACE-FO, GRACE	GRACE-FO MWI, GRACE INTERFEROMETER	2002-04-16 to Present	N: 90 S: -90 E: 180 W: -180	0.5 Decimal Degrees x 0.5 Decimal Degrees	netCDF-4
Gridded Altimeter Fields with Enhanced Coastal Coverage	1	OSTM/JASON-2, TOPEX/POSEIDON, JASON-1	POSEIDON-3, SSALT, POSEIDON-2	1992-10-14 to 2012-04-18	N: 48.5 S: 35.25 E: 180 W: -111.5 , N: 48.5 S: 35.25 E: -132.25 W: -180	0.25 Decimal Degrees x 0.25 Decimal Degrees	netCDF-4
Gridded Altimeter Fields with Enhanced Coastal Coverage Daily	1	OSTM/JASON-2, TOPEX/POSEIDON, JASON-1	POSEIDON-3, SSALT, POSEIDON-2	1992-10-14 to 2011-01-19	N: 49 S: 35 E: -111 W: -133	0.25 Decimal Degrees x 0.25 Decimal Degrees	netCDF-4
HOMAGE Monthly Time series of global average steric height anomalies and ocean heat content estimates from gridded in-situ ocean observations version 01	1.0	Argo-Float, GRACE, GRACE-FO		1978-01-15	N: 89.5 S: -89.5 E: 180 W: -180	360 Decimal Degrees x 180 Decimal Degrees	netCDF-4
Integrated Multi-Mission Ocean Altimeter Data for Climate Research complete time series Version 5.2	5.2	OSTM/JASON-2, JASON-1, TOPEX/POSEIDON, JASON-3, Sentinel-6A	AMR, POSEIDON-3, JASON-1 Microwave Radiometer, POSEIDON-2, TMR, POSEIDON-3B	1992-09-25 to Present	N: 66 S: -66 E: 180 W: -180		netCDF-4
Integrated Multi-Mission Ocean Altimeter Data for Climate Research Version 5.2	5.2	OSTM/JASON-2, JASON-1, TOPEX/POSEIDON, JASON-3, Sentinel-6A	AMR, POSEIDON-3, JASON-1 Microwave Radiometer, POSEIDON-2, TMR, POSEIDON-3B	1992-09-25 to Present	N: 66 S: -66 E: 180 W: -180		netCDF-4
Integrated Multi-Mission Ocean Altimeter Data for Climate Research Version 6.0	6.0	OSTM/JASON-2, JASON-1, TOPEX/POSEIDON, JASON-3, Sentinel-6A	AMR, POSEIDON-3, JASON-1 Microwave Radiometer, POSEIDON-2, TMR, POSEIDON-3B	1992-09-25 to 2025-05-22	N: 66 S: -66 E: 180 W: -180		netCDF-4
JASON-1 ENHANCED JASON MICROWAVE RADIOMETER	1	JASON-1	JASON-1 Microwave Radiometer	2002-01-15 to 2012-02-11	N: 66.15 S: -66.15 E: 180 W: -180		netCDF-4
Jason-1 GDR SSHA version E NetCDF	E	JASON-1	JASON-1 Microwave Radiometer, POSEIDON-2	2002-01-14 to 2012-03-03	N: 66.15 S: -66.15 E: 180 W: -180		netCDF-4
Jason-1 GDR SSHA version E NetCDF Geodetic	E	Jason-1 Geodetic	JASON-1 Microwave Radiometer, POSEIDON-2	2012-05-07 to 2013-06-21	N: 66.15 S: -66.15 E: 180 W: -180		netCDF-4
Jason-1 GDR version E NetCDF	E	JASON-1	DORIS, JASON-1 Microwave Radiometer, POSEIDON-2	2002-01-14 to 2012-03-03	N: 66.15 S: -66.15 E: 180 W: -180		netCDF-4
Jason-1 GDR version E NetCDF Geodetic	E	Jason-1 Geodetic	DORIS, JASON-1 Microwave Radiometer, POSEIDON-2	2012-05-07 to 2013-06-21	N: 66.15 S: -66.15 E: 180 W: -180		netCDF-4
Jason-1 SGDR version E NetCDF	E	JASON-1	TRSR, DORIS, JASON-1 Microwave Radiometer, POSEIDON-2	2002-01-14 to 2012-03-03	N: 66.15 S: -66.15 E: 180 W: -180		netCDF-4
Jason-1 SGDR version E NetCDF Geodetic	E	Jason-1 Geodetic	TRSR, DORIS, JASON-1 Microwave Radiometer, POSEIDON-2	2012-05-07 to 2013-06-21	N: 66.15 S: -66.15 E: 180 W: -180		netCDF-4
Jason-3 GPS based orbit and SSHA OGDR	G	JASON-3	AMR, GPSP, POSEIDON-3	2020-10-29	N: 66 S: -66 E: 180 W: -180		netCDF-4
Jason-3 Wet Path Delay Correction	F	JASON-3	AMR, GPSP, POSEIDON-3	2016-02-12	N: 66 S: -66 E: 180 W: -180		ascii
MEaSUREs Gridded Sea Surface Height Anomalies Version 2205	2205	OSTM/JASON-2, JASON-1, TOPEX/POSEIDON, JASON-3, Sentinel-6A	AMR, POSEIDON-3, JASON-1 Microwave Radiometer, POSEIDON-2, POSEIDON-3B, Poseidon-4 Radar Altimeter, AMR-C	1992-10-01	N: 80 S: -80 E: 180 W: -180	0.17 Decimal Degrees x 0.17 Decimal Degrees	netCDF-4
MERRA-2 const_2d_asm_Nx: 2d, constants 0.625 x 0.5 degree V5.12.4 (M2C0NXASM) at GES DISC	5.12.4	MERRA-2	NOT APPLICABLE	1980-01-01 to 2020-12-31	N: 90 S: -90 E: 180 W: -180	0.625 Kilometers x 0.5 Kilometers
NASA-SSH Along-Track Sea Surface Height from Standardized Reference Missions Version 1	1	TOPEX/POSEIDON, JASON-1, OSTM/JASON-2, JASON-3, Sentinel-6A	SSALT, NRA, TMR, POSEIDON-2, JASON-1 Microwave Radiometer, POSEIDON-3, AMR, POSEIDON-3B, AMR-2, Poseidon-4 Radar Altimeter, AMR-C	1992-10-25 to Present	N: 90 S: -90 E: 180 W: -180	10 Kilometers x 10 Kilometers	netCDF-4
NASA-SSH ENSO Sea Surface Height Indicator	1	TOPEX/POSEIDON, JASON-1, OSTM/JASON-2, JASON-3, Sentinel-6A	SSALT, NRA, TMR, POSEIDON-2, JASON-1 Microwave Radiometer, POSEIDON-3, AMR, POSEIDON-3B, AMR-2, Poseidon-4 Radar Altimeter, AMR-C	1993-01-04	N: 66 S: -66 E: 180 W: -180		ASCII
NASA-SSH Global Mean Sea Level from Simple Gridded Sea Surface Height	1	TOPEX/POSEIDON, JASON-1, OSTM/JASON-2, JASON-3, Sentinel-6A	SSALT, NRA, TMR, POSEIDON-2, JASON-1 Microwave Radiometer, POSEIDON-3, AMR, POSEIDON-3B, AMR-2, Poseidon-4 Radar Altimeter, AMR-C	1993-01-04	N: 66 S: -66 E: 180 W: -180		ASCII
NASA-SSH IOD Sea Surface Height Indicator	1	TOPEX/POSEIDON, JASON-1, OSTM/JASON-2, JASON-3, Sentinel-6A	SSALT, NRA, TMR, POSEIDON-2, JASON-1 Microwave Radiometer, POSEIDON-3, AMR, POSEIDON-3B, AMR-2, Poseidon-4 Radar Altimeter, AMR-C	1993-01-04	N: 66 S: -66 E: 180 W: -180		ASCII
NASA-SSH PDO Sea Surface Height Indicator	1	TOPEX/POSEIDON, JASON-1, OSTM/JASON-2, JASON-3, Sentinel-6A	SSALT, NRA, TMR, POSEIDON-2, JASON-1 Microwave Radiometer, POSEIDON-3, AMR, POSEIDON-3B, AMR-2, Poseidon-4 Radar Altimeter, AMR-C	1993-01-04	N: 66 S: -66 E: 180 W: -180		ASCII
NASA-SSH Simple Gridded Sea Surface Height from Standardized Reference Missions Only Version 1	1	TOPEX/POSEIDON, JASON-1, OSTM/JASON-2, JASON-3, Sentinel-6A	SSALT, NRA, TMR, POSEIDON-2, JASON-1 Microwave Radiometer, POSEIDON-3, AMR, POSEIDON-3B, AMR-2, Poseidon-4 Radar Altimeter, AMR-C	1992-10-25 to Present	N: 90 S: -90 E: 180 W: -180	0.5 Decimal Degrees x 0.5 Decimal Degrees	netCDF-4

Featured Sea Surface Topography Observation Method: SWOT

NASA's Surface Water and Ocean Topography (SWOT) platform monitors Earth’s surface water and measures how water bodies, such seas and oceans, change over time. SWOTS measures water surface heights using its primary instrument, the Ka-band Radar Interferometer (KaRIn).

Learn More About SWOT

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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