The tilt of mean sea level along the east coast of North America

Edited: 2015-02-24
TitleThe tilt of mean sea level along the east coast of North America
Publication TypeJournal Article
Year of Publication2015
AuthorsHigginson, S., K. Thompson, P. Woodworth, and C. Hughes
JournalGeophysical Research Letters
Paginationn/a - n/a
Date Published02/2015
Keywordsclimate, coastal, sea_level
AbstractThe tilt of mean sea level along the North American east coast has been a subject of debate for many decades. Improvements in geoid and ocean circulation models, and GPS positioning of tide gauge benchmarks, provide an opportunity to produce new tilt estimates. Tilts estimated using tide gauge measurements referenced to high-resolution geoid models (the geodetic approach) and ocean circulation models (the ocean approach) are compared. The geodetic estimates are broadly similar, with tilts downwards to the north through the Florida Straits and at Cape Hatteras. Estimates from the ocean approach show good agreement with the geodetic estimates, indicating a convergence of the two approaches and resolving the long standing debate as to the sign ofthe tilt. These tilts differ from those used by Yin and Goddard [2013] to support a link between changing ocean circulation and coastal sea level rise.
Short TitleGeophys. Res. Lett.