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Sea Level Trends

Mean Sea Level Trend
8518750 The Battery, New York

chart: Mean Sea Level Trend, 8518750 - The Battery, New York

The mean sea level trend is 2.77 millimeters/year with a 95% confidence
interval of +/- 0.09 mm/yr based on monthly mean sea level data from
1856 to 2006 which is equivalent to a change of 0.91 feet in 100 years.


NEW! Updated Mean Sea Level Trends


The plot shows the monthly mean sea level without the regular seasonal fluctuations due to coastal ocean temperatures, salinities, winds, atmospheric pressures, and ocean currents. The long-term linear trend is also shown, including its 95% confidence interval. The plotted values are relative to the most recent Mean Sea Level datum established by CO-OPS. The calculated trends for all stations are available as a table in millimeters/year or a table in feet/century (0.3 meters = 1 foot).

If present, solid vertical lines indicate times of any major earthquakes in the vicinity of the station and dashed vertical lines bracket any periods of questionable data.

chart: Average Seasonal Cycle, 8518750 - The Battery, New York
Average
seasonal
cycle
chart: Interannual variation for all data, 8518750 - The Battery, New York
Interannual
variation
for all data
Interannual variation since 1990, 8518750 - The Battery, New York
Interannual
variation
since 1990
chart: Variation of 50-year mean sea level trends, 8518750 - The Battery, New York
Variation
of 50-year mean
sea level trends



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