Model projections of rapid sea-level rise on the northeast coast of the United States
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Material Information

Title:
Model projections of rapid sea-level rise on the northeast coast of the United States
Series Title:
Nature Geoscience Letters
Creator:
Jianjun Yin
Michael E. Schlesinger
Ronald J. Stouffer
Affiliation:
Florida State University -- Center for Ocean-Atmospheric Prediction Studies
University of Illinois -- Urbana Champaign -- Department of Atmospheric Sciences -- Climate Research Group
National Oceanic and Atmospheric Administration -- Geophysical Fluid Dynamics Laboratory
Publisher:
Macmillan Publishers Limited
Publication Date:
Language:
English

Notes

Abstract:
Human-induced climate change could cause global sea-level rise. Through the dynamic adjustment of the sea surface in response to a possible slowdown of the Atlantic meridional overturning circulation1,2, a warming climate could also affect regional sea levels, especially in the North Atlantic region3, leading to high vulnerability for low-lying Florida and western Europe4–6. Here we analyse climate projections from a set of state-of-the-art climate models for such regional changes, and find a rapid dynamical rise in sea level on the northeast coast of the United States during the twenty-first century. For New York City, the rise due to ocean circulation changes amounts to 15, 20 and 21 cm for scenarios with low, medium and high rates of emissions respectively, at a similar magnitude to expected global thermal expansion. Analysing one of the climate models in detail, we find that a dynamic, regional rise in sea level is induced by a weakening meridional overturning circulation in the Atlantic Ocean, and superimposed on the global mean sea-level rise. We conclude that together, future changes in sea level and ocean circulation will have a greater effect on the heavily populated northeastern United States than estimated previously.

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Source Institution:
Florida International University
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Sea Level Rise