| Indicator | Observations | Distributed by | Source |
|---|---|---|---|
| Global mean sea level | NASA satellite altimetry (TOPEX/Poseidon, Jason-1, OSTM/Jason-2, Jason-3, Sentinel-6 Michael Freilich) | NASA Earth Indicators chart data, full record at PO.DAAC (NASA_SSH_GMSL_INDICATOR) | Link |
| Greenland and Antarctic ice mass | GRACE and GRACE-FO, JPL RL06.3 mascons | NASA Earth Indicators chart data, time series at PO.DAAC | Link |
| Ocean mass | GRACE and GRACE-FO, JPL RL06.3 mascons | NASA Sea Level Change portal, time series at PO.DAAC (OCEAN_MASS_TELLUS_MASCON_CRI_TIME_SERIES) | Link |
| Steric height | Argo floats and in situ profiles, 0 to 2000 m | NOAA National Centers for Environmental Information | Link |
| Reference rates | Published literature | Compiled by the NASA Sea Level Change Team | Link |
| AR6 projections | IPCC AR6 WG1 Chapter 9 | Zenodo, doi:10.5281/zenodo.5914709 | Link |
How the data stay current
Every time the site is built, a script retrieves the latest published values from the sources above and stores them as small JSON files in the /data folder. The site is rebuilt on a schedule, so the charts and every number quoted in the text follow the newest observations without manual edits. Each chart offers a data table and a CSV download that records the source and retrieval date.
Acknowledgments
Satellite altimetry, gravity and ocean observations are provided by NASA, NOAA, CNES, EUMETSAT, ESA, the German Research Centre for Geosciences (GFZ), the international Argo Program and the national programs that contribute to it. Sea level projections are from the IPCC Sixth Assessment Report.