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High quality measurements of (near)-global sea level have been made since late 1992 by satellite altimeters, in particular, TOPEX/Poseidon (launched August, 1992), Jason-1 (launched December, 2001) and Jason-2 (launched June, 2008). This data has shown a more-or-less steady increase in Global Mean Sea Level (GMSL) of around 3.2 ± 0.4 mm/year over that period. This is more than 50% larger than the average value over the 20th century. Whether or not this represents a further increase in the rate of sea level rise is not yet certain.
3.2MM PER YEAR !!!!!!!! 3.2mm / annum = 312 years to rise one metre ?
http://www.cmar.csiro.au/sealevel/sl_hist_last_15.html
No wait ... down the bottom of the page ... the ocean expands and contracts seasonally
3.2MM PER YEAR !!!!!!!! 3.2mm / annum = 312 years to rise one metre ?
http://www.cmar.csiro.au/sealevel/sl_hist_last_15.html
No wait ... down the bottom of the page ... the ocean expands and contracts seasonally