We are in the process of migrating all NASA Earth science data sites into Earthdata from now until end of 2026. Not all NASA Earth science data and resources will appear here until then. Thank you for your patience as we make this transition.
Read about the Web Unification Project
Sea Surface Topography Data Access and Tools
Sea Surface Topography Datasets
| Dataset Sort descending | Version | Platform | Instrument | Temporal Extent | Spatial Extent | Spatial Resolution | Data Format |
|---|---|---|---|---|---|---|---|
| ECCO Sea Surface Height - Monthly Mean 0.5 Degree (Version 4 Release 4) | V4r4 | MODELS, MITgcm | 1992-01-01 to 2018-01-01 |
N: 90 S: -90 E: 180 W: -180 |
0.5 Decimal Degrees x 0.5 Decimal Degrees | netCDF-4 | |
| ECCO Sea Surface Height - Monthly Mean 0.5 Degree (Version 4 Release 4b) | V4r4b | MODELS, MITgcm | 1992-01-01 to 2018-01-01 |
N: 90 S: -90 E: 180 W: -180 |
0.5 Decimal Degrees x 0.5 Decimal Degrees | netCDF-4 | |
| ECCO Sea Surface Height - Monthly Mean llc90 Grid (Version 4 Release 4) | V4r4 | MODELS, MITgcm | 1992-01-01 to 2018-01-01 |
N: 90 S: -90 E: 180 W: -180 |
1 Decimal Degrees x 1 Decimal Degrees | netCDF-4 | |
| ECCO Sea Surface Height - Monthly Mean llc90 Grid (Version 4 Release 4b) | V4r4b | MODELS, MITgcm | 1992-01-01 to 2018-01-01 |
N: 90 S: -90 E: 180 W: -180 |
1 Decimal Degrees x 1 Decimal Degrees | netCDF-4 | |
| ECCO Sea Surface Height - Snapshot llc90 Grid (Version 4 Release 4) | V4r4 | MODELS, MITgcm | 1992-01-01 to 2018-01-01 |
N: 90 S: -90 E: 180 W: -180 |
1 Decimal Degrees x 1 Decimal Degrees | netCDF-4 | |
| GEOS-3 ALTIMETER GEOPHYSICAL DATA RECORD 1975-1978 | 1 | GEOS-3 | GEOS-3 ALTIMETER | 1975-04-14 to 1978-12-02 |
N: 90 S: -90 E: 180 W: -180 |
RAW | |
| GLAS/ICESat L1B Global Elevation Data (HDF5) V033 | 033 | ICESat | GLAS | 2003-02-20 to 2009-10-11 |
N: 86 S: -86 E: 180 W: -180 |
HDF | |
| GLAS/ICESat L1B Global Elevation Data (HDF5) V034 | 034 | ICESat | ALTIMETERS, CD, GLAS, GPS, GPS Receiver, LA, PC | 2003-02-20 to 2009-10-11 |
N: 86 S: -86 E: 180 W: -180 |
60 Meters to 70 Meters x 60 Meters to 70 Meters | HDF5 |
| GLAS/ICESat L1B Global Elevation Data V018 | 18 | ICESat | ALTIMETERS, GLAS | 2003-01-13 to 2010-01-13 |
N: 86 S: -86 E: 180 W: -180 |
Binary | |
| GLAS/ICESat L1B Global Elevation Data V033 | 033 | ICESat | ALTIMETERS, GLAS | 2003-02-20 to 2009-10-11 |
N: 86 S: -86 E: 180 W: -180 |
Binary | |
| GLAS/ICESat L2 Ocean Altimetry Data (HDF5) V033 | 033 | ICESat | GLAS | 2003-02-20 to 2009-10-11 |
N: 86 S: -86 E: 180 W: -180 |
HDF | |
| GLAS/ICESat L2 Ocean Altimetry Data (HDF5) V034 | 034 | ICESat | ALTIMETERS, CD, GLAS, GPS, GPS Receiver, LA, PC | 2003-02-20 to 2009-10-11 |
N: 86 S: -86 E: 180 W: -180 |
60 Meters to 70 Meters x 60 Meters to 70 Meters | HDF |
| GLAS/ICESat L2 Ocean Surface Altimetry Data V018 | 18 | ICESat | ALTIMETERS, GLAS | 2003-01-13 to 2010-01-13 |
N: 86 S: -86 E: 180 W: -180 |
Binary | |
| GLAS/ICESat L2 Ocean Surface Altimetry Data V033 | 033 | ICESat | ALTIMETERS, GLAS | 2003-02-20 to 2009-10-11 |
N: 86 S: -86 E: 180 W: -180 |
Binary | |
| GLAS/ICESat L2 Ocean Surface Altimetry Data V034 | 034 | ICESat | ALTIMETERS, GLAS | 2003-02-20 to 2009-10-11 |
N: 86 S: -86 E: 180 W: -180 |
60 Meters to 70 Meters x 60 Meters to 70 Meters | Binary |
| Global Mean Sea Level Trend from Integrated Multi-Mission Ocean Altimeters TOPEX/Poseidon, Jason-1, OSTM/Jason-2, Jason-3, and Sentinel-6 Version 5.2 | 5.2 | OSTM/JASON-2, JASON-1, TOPEX/POSEIDON, JASON-3 | AMR, POSEIDON-3, JASON-1 Microwave Radiometer, POSEIDON-2, ALT (TOPEX), TMR, SSALT, POSEIDON-3B | 1992-09-01 |
N: 66 S: -66 E: 180 W: -180 |
360 Decimal Degrees x 132 Decimal Degrees | ASCII |
| 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 |
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).
Recently released datasets from the SWOT mission provide scientists with previously unavailable measurements of Earth's surface water.
9 MIN READ
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.
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.
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
| 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 |
SHOWING 2 OF 2
Frequently Asked Questions
Earthdata Forum
Our online forum provides a space for users to browse thousands of FAQs about research needs, data, and data applications. You can also submit new questions for our experts to answer.
Submit Questions to Earthdata Forumand View Expert Responses