Sea Levels Are Stable To Falling At About Half Of The World’s Tide Gauges

A few years ago, a comprehensive analysis of selection bias in tide gauge measurements between 1807-2010 indicated that (a) sea levels are only rising at a rate of about 1 mm/yr (as of 2010), and (b) a total of 65% of the world’s tide gauges have recorded stable to falling sea levels. Out of a database of over 2,100 tide gauge measurements available from the Permanent Service for Mean Sea Level, NOAA has selected 240 tide gauges for their analysis of global-scale sea level rise. Of these, there are about 15 gauges that did not extend far enough into the last few decades (for example, Latvia, Antarctica, Ghana, Colombia), precluding a recent trend analysis. Of the remaining 225 tide gauges in the NOAA database, there are at least 100 located in regions where sea levels are stable (no significant change in either direction) or falling.  A graphical illustration of these non-trend tide gauge measurements is provided below. click here to read the story, see graphs 13:49