Enhanced Atlantic sea-level rise relative to the Pacific under high carbon emission rates

Krasting, J. P.; Dunne, J. P.; Stouffer, R. J.; Hallberg, R. W.

doi:10.1038/ngeo2641

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The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.

i

Enhanced Atlantic sea-level rise relative to the Pacific under high carbon emission rates

2016
By Krasting, J. P. ; Dunne, J. P. ; Stouffer, R. J. ; ...
Source: Nature Geoscience, 9(3), 210-214

[PDF-4.05 MB]

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Journal Title:

Nature Geoscience
Personal Author:

Krasting, J. P. ; Dunne, J. P. ; Stouffer, R. J. ; Hallberg, R. W.

Krasting, J. P. ; Dunne, J. P. ; Stouffer, R. J. ; Hallberg, R. W. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; GFDL (Geophysical Fluid Dynamics Laboratory)

OAR (Oceanic and Atmospheric Research) ; GFDL (Geophysical Fluid Dynamics Laboratory) Less -
Description:

Thermal expansion of the ocean in response to warming is an important component of historical sea-level rise. Observational studies show that the Atlantic and Southern oceans are warming faster than the Pacific Ocean. Here we present simulations using a numerical atmospheric-ocean general circulation model with an interactive carbon cycle to evaluate the impact of carbon emission rates, ranging from 2 to 25 GtC yr−1, on basin-scale ocean heat uptake and sea level. For simulations with emission rates greater than 5 GtC yr−1, sea-level rise is larger in the Atlantic than Pacific Ocean on centennial timescales. This basin-scale asymmetry is related to the shorter flushing timescales and weakening of the overturning circulation in the Atlantic. These factors lead to warmer Atlantic interior waters and greater thermal expansion. In contrast, low emission rates of 2 and 3 GtC yr−1 will cause relatively larger sea-level rise in the Pacific on millennial timescales. For a given level of cumulative emissions, sea-level rise is largest at low emission rates. We conclude that Atlantic coastal areas may be particularly vulnerable to near-future sea-level rise from present-day high greenhouse gas emission rates.
Source:

Nature Geoscience, 9(3), 210-214
DOI:

https://doi.org/10.1038/ngeo2641
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1752-0894;1752-0908;
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Springer Science and Business Media LLC
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Journal Article
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urn:sha-512:7d889641ad0ab82df79a49c1d639fde7d158c97f0f56c5ddb01d25ba786b17f47e9eef35d36b1524f6e4e0036052e18f429f1bf52cc0597daab7f886c8ce3b7b
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Enhanced Atlantic sea-level rise relative to the Pacific under high carbon emission rates

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