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Sea Surface Topography Data Access and Tools

Sea Surface Topography Datasets

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Dataset Version Platform Instrument Temporal Extent Spatial Extent Spatial Resolution Data Format
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 to 2022-12-22

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
Reconstructed Global Mean Sea Level 1900-2018 1.0 GRACE-FO, GRACE GRACE-FO MWI, GRACE-FO SCA, GRACE-FO ACC, GRACE SCA, GRACE INTERFEROMETER, GRACE ACC 1900-01-01 to 2018-12-31

N: 89.5 S: -89.5 E: 180 W: -180

netCDF-4
Reconstructed Sea Level Version 1 1 OSTM/JASON-2, Jason-1 Geodetic, JASON-1, TOPEX/POSEIDON AMR, POSEIDON-3, JASON-1 Microwave Radiometer, POSEIDON-2, TMR, SSALT 1950-01-03 to 2009-06-27

N: 90 S: -90 E: 180 W: -180

0.5 Decimal Degrees x 0.5 Decimal Degrees netCDF-4
SARAL Near-Real-Time Value-added Operational Geophysical Data Record Sea Surface Height Anomaly f SARAL ALTIKA Altimeter 2020-03-18

N: 82 S: -82 E: 180 W: -180

8000 Meters x 8000 Meters netCDF-4
SASSIE ECCO Ocean Bottom Pressure and Sea Surface Height - Daily Mean llc1080 Grid (Version 1 Release 1) V1R1 MITgcm 2014-01-15 to 2021-02-08 NETCDF4
SASSIE ECCO Ocean Bottom Pressure and Sea Surface Height - Snapshot llc1080 Grid (Version 1 Release 1) V1R1 MITgcm 2014-01-15 to 2021-02-08 NETCDF4
Seasat Level 1 Synthetic Aperture Radar Products 1 SEASAT 1 SAR 1978-07-04 to 1978-10-12 GeoTIFF, HDF5, XML, KML, Text File
Sentinel-6A MF Jason-CS L1A P4 Altimeter High Resolution (HR) NTC Intermediate Outputs with Instrument Calibrations F08 F08 Sentinel-6A Poseidon-4 Radar Altimeter, AMR-C, DORIS, GNSS RECEIVER, GNSS-RO RECEIVER, Star Tracker 2020-11-30

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

netCDF-4
Sentinel-6A MF Jason-CS L1A P4 Altimeter High Resolution (HR) NTC Intermediate Outputs with Instrument Calibrations G01 G01 Sentinel-6A Poseidon-4 Radar Altimeter, AMR-C, DORIS, GNSS RECEIVER, GNSS-RO RECEIVER, Star Tracker 2020-11-30

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

netCDF-4
Sentinel-6A MF Jason-CS L1A P4 Altimeter High Resolution (HR) STC Intermediate Outputs with Instrument Calibrations F Sentinel-6A Poseidon-4 Radar Altimeter, AMR-C, DORIS, GNSS RECEIVER, GNSS-RO RECEIVER, Star Tracker 2020-12-07

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

netCDF-4
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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
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.

Sea Surface Topography Data Tools

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Tool 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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