In addition, the parent comment has omitted groundwater.  Good current estimates for groundwater volume (in the OP, <a href="http:&#x2F;&#x2F;water.usgs.gov&#x2F;edu&#x2F;earthhowmuch.html" rel="nofollow">http:&#x2F;&#x2F;water.usgs.gov&#x2F;edu&#x2F;earthhowmuch.html</a>) are very close to icecap volume (24e6 km^3).<p>And we are pumping this groundwater (~700 km3&#x2F;yr as of 2000, and increasing [ <i></i>* ]), which raises water levels and at the same time lowers land elevation as ground subsides.  Depending on the Hollywood disaster scenario, that could play a role.<p>Atmospheric water, on the other hand, is a rounding error in this context.<p>[<i></i>*]: See fig. 3 of <a href="http:&#x2F;&#x2F;onlinelibrary.wiley.com&#x2F;doi&#x2F;10.1029&#x2F;2010GL044571&#x2F;full" rel="nofollow">http:&#x2F;&#x2F;onlinelibrary.wiley.com&#x2F;doi&#x2F;10.1029&#x2F;2010GL044571&#x2F;full</a>