[Phys-L] Sea Level Trends

["David Marx" <marx@phy.ilstu.edu>]

John Denker mentioned that sea levels are rising (and perhaps, accelerating).

I looked up the data at

http://www.tidesandcurrents.noaa.gov/sltrends/

where you can find the monthly averaged data for 128 long-term (minimum 30 years) stations in the 
Water Level Observation Network.

It apears that for most middle latitude stations, the trend is 0 to 1 foot / century. The second most 
common rate seems to be 1 to 2 feet / century. What is most curious is the trend at higher latitudes 
(including Southern Alaska and Northern Europe), where sea levels have a negative trend of -3 to -5 
feet / century.

David Marx