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Welcome to the
Permanent Service for Mean Sea Level (PSMSL)

Sea Level Observations: From Technology to Applications
CSLT-GLOSS Sea Level Workshop
La Rochelle, France, 24-25 May 2027

PSMSL is the global data bank for long term sea level change information from tide gauges and bottom pressure recorders.

About Us:

Learn about PSMSL, contact us, read news items and annual reports

Data:

Obtain and submit sea level data measured by tide gauges, GNSS receivers and bottom pressure recorders

Products:

Browse the data set via Google Earth or obtain derived products, view regional commentaries and author archives

Training & Information:

A wide variety of FAQs, training and software documentation, information on non-oceanographic signals in tide gauge records (e.g., glacial isostatic adjustment, atmospheric pressure, etc.)

Links:

Links to other networks and programs, as well as international sea level contacts