About Us

Established in 1933, the Permanent Service for Mean Sea Level (PSMSL) has been responsible for the collection, publication, analysis and interpretation of sea level data from the global network of tide gauges. It is based in Liverpool at the National Oceanography Centre (NOC), which is a component of the UK Natural Environment Research Council (NERC).

PSMSL Overview:

Learn much more about PSMSL, including an overview of the data sets and reporting structures, as well as others other activities of the service

News and Events:

Read about changes and events at PSMSL

Annual Reports:

Review our annual reports

Other Reports:

Browse other reports generated by PSMSL