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Webinar: Sea-level rise ‘hot spots’ along the U.S. Atlantic coast

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Wednesday, 13 September 2017, 12:00

Wednesday, September 13, 2017. 12:00PM. Webinar: Sea-level rise ‘hot spots’ along the U.S. Atlantic coast. Arnoldo Valle-Levinson, University of Florida. Sponsored by NOAA. More information here.

Sea-level rise (SLR) accelerated in a “hot spot” along the north of Cape Hatteras over the past several decades, including an abrupt rise of ~13 cm in 2009-2010. This regional acceleration in SLR has been attributed to weakening in Atlantic Meridional Overturning Circulation (AMOC), although this causal link remains debated. Professor Valle-Levinson will talk about a striking shift in the pattern of SLR along the U.S. Atlantic coast during 2011-2015, whereby SLR decelerated north of Cape Hatteras and accelerated south of the Cape to >20 mm/yr, despite continued decline in AMOC strength. Tide-gauge records, 95-yr long, show that similar SLR intervals have occurred repeatedly over ~1500-km stretches of coastline. Causes for this variability are likely associated with the cumulative effects of ENSO and NAO. The regional expression of SLR hot spots documented here is a key factor in determining coastal vulnerability in the context of continued global mean sea-level rise and should be captured in global climate models of regional sea-level change.

About the Speaker: Arnoldo Valle-Levinson carried out undergraduate studies at the University of Baja California, in Mexico, and graduate studies on Marine Sciences at Stony Brook University, New York. He is author in 160+ peer-reviewed publications in international journals. His research concentrates in coastal hydrodynamics, specifically in the areas of morphologic effects on estuarine and coastal circulation, and on wind-driven, tidally driven and density-driven circulation. Arnoldo has been Visiting Researcher at several institutions in the Netherlands, Spain, Australia, Mexico, Chile, Japan, and France. He is one of the 100 worldwide Corresponding Members of the Mexican Academy of Sciences. He is Associate Editor of Continental Shelf Research, Estuaries and Coasts, and Oceanography.​


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