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

Established in 1933, PSMSL is the global data bank for long term sea level change information from tide gauges and bottom pressure recorders.

Map of recently updated records Tide gauge records updated in the 30 days prior to
23 Mar 2011

About Us:

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

Data:

Obtain and submit tide gauge and bottom pressure data

Products:

Browse the data set via GoogleEarth 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