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|a Gulf Stream's induced sea level rise and variability along the U.S. mid-Atlantic coast |h [electronic resource]. |
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|a [S.l.] : |b American Geophysical Union, |c 2013. |
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|a Journal of Geophysical Research Volume 118 |b Oceans. |
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|a Please contact the owning institution for licensing and permissions. It is the user's responsibility to ensure use does not violate any third party rights. |
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|a Recent studies indicate that the rates of sea level rise (SLR) along the U.S.
mid-Atlantic coast have accelerated in recent decades, possibly due to a slowdown of the
Atlantic Meridional Overturning Circulation (AMOC) and its upper branch, the Gulf
Stream (GS). We analyzed the GS elevation gradient obtained from altimeter data, the
Florida Current transport obtained from cable measurements, the North Atlantic Oscillation
(NAO) index, and coastal sea level obtained from 10 tide gauge stations in the Chesapeake
Bay and the mid-Atlantic coast. An Empirical Mode Decomposition/Hilbert-Huang
Transformation (EMD/HHT) method was used to separate long-term trends from
oscillating modes. The coastal sea level variations were found to be strongly influenced by
variations in the GS on timescales ranging from a few months to decades. It appears that
the GS has shifted from a 6–8 year oscillation cycle to a continuous weakening trend since
about 2004 and that this trend may be responsible for recent acceleration in local SLR. The
correlation between long-term changes in the coastal sea level and changes in the GS
strength was extremely high (R = [negative]0.85 with more than 99.99% confidence that the
correlation is not zero). The impact of the GS on SLR rates over the past decade seems to
be larger in the southern portion of the mid-Atlantic Bight near Cape Hatteras and is
reduced northward along the coast. The study suggests that regional coastal sea level rise
projections due to climate change must take into account the impact of spatial changes in
ocean dynamics. |
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|a Electronic reproduction. |c Florida International University, |d 2015. |f (dpSobek) |n Mode of access: World Wide Web. |n System requirements: Internet connectivity; Web browser software. |
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|a Middle Atlantic Region. |
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|t Gulf Stream's induced sea level rise and variability along the U.S. mid-Atlantic coast |
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|a dpSobek |c Sea Level Rise |
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|u http://dpanther.fiu.edu/dpService/dpPurlService/purl/FI15061981/00001 |y Click here for full text |
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|3 Host material |u http://onlinelibrary.wiley.com/doi/10.1002/jgrc.20091/full |y Gulf Stream's induced sea level rise and variability along the U.S. mid-Atlantic coast |
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|a http://dpanther.fiu.edu/sobek/content/FI/15/06/19/81/00001/FI15061981thm.jpg |
