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Sea Level Trends
Sea Levels OnlineView in Google Earth The Center for Operational Oceanographic Products and Services has been measuring sea level for over 150 years, with tide stations operating on all U.S. coasts through the National Water Level Observation Network. Changes in Mean Sea Level (MSL), either a rising or falling trend, have been computed at 128 long-term water level stations using a minimum span of 30 years of observations at each location. These measurements have been averaged by month to remove the effect of high frequency phenomena, such as waves and tides, to compute an accurate linear sea level trend. The trend analysis has also been extended to a network of global tide stations including 114 additional non-NOAA stations.
Frequently Asked Questions:
What is Sea Level? Why does Sea Level change over time? What does Sea Level have to do with Climate?
Data and Resources
Contact Information For additional information, please contact CO-OPS. Coming soon:
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