NOTICE (September 2017): Data previously stored at the CDIAC archive are being transitioned to the new, ESS-DIVE archive. This website provides access to the CDIAC data during the transition. If you have any questions regarding the new archive or the data transition, please contact

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Global Mean Sea Level

The graph on this page is generated from data taken from the "Laboratory for Satellite Altimetry / Sea Level Rise" page on the Department of Commerce/National Oceanic and Atmospheric Administration (NOAA) website. The graph shows the composite sea level measurements from three earth-orbiting satellites, TOPEX/Poseidon, Jason-1, and Jason-2. The TOPEX/Poseidon satellite, was launched in 1992, the Jason-1 satellite was launched in 2001, and the Jason-2 satellite was launched in 2008. These satellites provide sustained radar altimetry observations and continuous data on sea surface height with great accuracy.

Click, hold, and sweep an area to zoom in. Right-click to return to full view. Download the above image here.


The plot above is generated from dataset: the TOPEX, Jason-1, and Jason-2 data for mean sea level with seasonal signals removed. The historical trend is 2.9 ± 0.4 mm/year. Altimetry data are provided by the NOAA Laboratory for Satellite Altimetry.


Laboratory for Satellite Altimetry / Sea Level Rise