Permanent Service for Mean Sea Level (PSMSL)

Permanent Service for Mean Sea Level (PSMSL)
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Bruce Douglas
End of 2025 data release
PSMSL spam warning
End of 2024 data release
End of 2023 data release
Update to MATLAB zip reader
Session on GNSS at AGU
Update of ellipsoid links
End of 2022 data released
David Pugh
End of 2021 data released
End of 2020 data released
Data rescue project launched
Explore the Dataset
Map-Based Data Page
Trends and Anomalies
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Welcome to the
Permanent Service for Mean Sea Level (PSMSL)
PSMSL is the global data bank for long term sea level
change information from tide gauges and bottom pressure recorders.
Tide gauge records updated in the
30 days prior to
06 Apr 2026
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
The PSMSL is based at and supported by the UK's
National Oceanography Centre
.
We receive some funding from the UK's
Natural Environment Research Council (NERC)
but if you'd like to support us, please
visit this link