Sea Level Trends: Sea Level Variations of the United States Derived from National Water Level Observation Network Stations

Water level records are a combination of the fluctuations of the ocean and the vertical land motion at the location of the station. Monthly mean sea level (MSL) variations were analyzed for the stations of the National Ocean Service's (NOS) National Water Level Observation Network (NWLON) having at least 30 years of data. The sea level variations determined are the relative sea level trend, the average seasonal cycle, and the interannual variability at each station. Since the derived trends include the local vertical land motion, they are spatially variable. The relative sea level trend plots include the time series for each station of the monthly MSL with the seasonal cycle removed, a 5-month average, and the linear trend with its 95% confidence interval; the average seasonal cycle; the interannual variation of MSL. The plots are updated monthly and the long-term trend is recalculated every year.  The location and timing of any major earthquakes near stations in tectonically-active areas are noted since an associated vertical offset or a change in MSL trend is possible.

Tags: acoustic sounders, alabama, alaska, american samoa, atlantic ocean, atmospheric/ocean indicators, average seasonal cycle, bermuda, california, caribbean sea, center for operational oceanographic products and services, central pacific ocean, climate indicators, co-ops metadata library, coastal monitoring, coastal processes, coastal u.s. territories, coastal united states, connecticut, continent, cook islands, delaware, district of columbia, doc/noaa/nos/co-ops, earth science, fiji, flood frequency, flooding, floods, florida, french polynesia, geomorphic landforms/processes, georgia, goes, guam, gulf of alaska, gulf of america, gulf of mexico, hawaii, hawaiian islands, human dimensions, interannual variability, inundation, johnston atoll, kiribati, land surface, long-term water level station, louisiana, maine, marshall islands, maryland, massachusetts, mean sea level, mean sea surface, micronesia, microwave water level (mwwl) sensor, midway atoll, mississippi, monthly msl variation, msl, msl change, national geospatial data asset, national ocean service, national water level observation network, natural hazards, new hampshire, new jersey, new york, ngda, ngdaid178, noaa, noaa geostationary operational environmental satellites, north america, north atlantic ocean, north carolina, north pacific ocean, nwlon, nwlon station, ocean, oceans, oregon, pacific ocean, pennsylvania, polynesia, pressure sensors, puerto rico, rhode island, samoa, sea level, sea level changes, sea level fall, sea level rise, sea level trends, sea surface height, sea surface topography, south carolina, south pacific ocean, surface water, surface water processes/measurements, terrestrial hydrosphere, texas, tidal height, tidal range, tide gauges, tides, u.s. department of commerce, u.s. exclusive economic zone, united states of america, virgin islands, virginia, wake island, washington, water level gauges, water oceans and coasts theme, western pacific ocean
Organization: National Oceanic and Atmospheric Administration, Department of Commerce