Recent Sea Level Trends

The rate of sea level change differs from one place to another and from one decade to the next.

Click the tabs above the map to see trends over the last 10 years, the last 20 years, and since the beginning of the satellite record in 1993. The maps show sea level trends from satellite altimetry (colored contours) and tide gauges (circles).

The satellite trends reflect changes in the sea surface height only, with most of the spatial variation resulting from the influence of winds blowing over the ocean. The tide gauge trends are relative to a fixed point on land and reflect changes in water level plus local vertical land motion. The land near a tide gauge can move up and down for a variety of reasons, such as earthquakes or ground-water withdrawal.

Data sources: Trends were calculated using (1) tide gauge data from the UHSLC Fast-Delivery database, and (2) Ssalto/Duacs altimeter products that were produced and distributed by the E.U. Copernicus Marine and Environment Monitoring Service (CMEMS). The latter are identical to the products formerly distributed by Aviso. **Please cite these sources if using images exported from the above maps.**

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