Welcome to the
Permanent Service for Mean Sea Level (PSMSL)
Help us rescue tide gauge data from the 19th century!
PSMSL is the global data bank for long term sea level
change information from tide gauges and bottom pressure recorders.
Learn about PSMSL, contact us, read news items and annual reports
Obtain and submit tide gauge and bottom pressure data
Browse the data set via Google Earth or obtain derived products, view regional
commentaries and author archives
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 to other networks and programs, as well as international sea level