BTW, not knowing how they take the measurement, is it possible that the land mass is sinking?
Someone should plot of graph of the population of New York versus the sea level rise. Of course you will see a trend. Then we demand people leave NYC and take down tall buildings to stop the sinking. Call it ‘Cap and Trade’. (yet I know it is built on bedrock...but don’t let science stand in front of a good story)
At any given tide gage location, it's the relative sea
level that's important. New York is no different. It
might be sinking. So what? Nothing can be done about that.
The tide gage record at the Permanent Service for Mean Sea
Level (PSMSL) all 1250 stations indicate that yes there is
an acceleration of about .011 mm/yr. Did you expect it to
stay absolutely static? Anyway, at an annual acceleration
of one one hundredth of a millimeter and IF it continues
sea level will be going up two mm/yr instead of one a hundred
years from now.
The Global Warming Lobby claims sea level is currently
going up 3.3 mm/yr but I don't believe them. At least the
records of relative sea level from all those 1250 PSMSL
tide gages doesn't confirm such a claim.