Our analyses do not indicate acceleration in sea level in U.S.
tide gauge records during the 20th century. Instead, for each
time period we consider, the records show small decelerations
that are consistent with a number of earlier studies of
worldwide-gauge records. The decelerations that we obtain
are opposite in sign and one to two orders of magnitude less
than the +0.07 to +0.28 mm/y2 accelerations that are required to
reach sea levels predicted for 2100 by Vermeer and Rahmsdorf
(2009), Jevrejeva, Moore, and Grinsted (2010), and Grinsted,
Moore, and Jevrejeva (2010). Bindoff et al. (2007) note an
increase in worldwide temperature from 1906 to 2005 of 0.74uC.
It is essential that investigations continue to address why this
worldwide-temperature increase has not produced acceleration
of global sea level over the past 100 years, and indeed why
global sea level has possibly decelerated for at least the last
80 years. Journal of Coastal Research online journal - Sea-Level Acceleration Based on U.S. Tide Gauges and Extensions of Previous Global-Gauge Analyses