The potential impact of nuclear conflict on ocean acidification
We demonstrate that the global cooling resulting from a range of nuclear conflict scenarios would temporarily increase the pH in the surface ocean by up to 0.06 units over a 5-year period, briefly alleviating the decline in pH associated with ocean acidification. Conversely, the global cooling dissolves atmospheric carbon into the upper ocean, driving a 0.1 to 0.3 unit decrease in the aragonite saturation state (Omega(arag)) that persists for similar to 10 years. The peak anomaly in pH occurs 2 years post conflict, while the Omega(arag) anomaly peaks 4- to 5-years post conflict. The decrease in Omega(arag) would exacerbate a primary threat of ocean acidification: the inability of marine calcifying organisms to maintain their shells/skeletons in a corrosive environment. Our results are based on sensitivity simulations conducted with a state-of-the-art Earth system model integrated under various black carbon (soot) external forcings. Our findings suggest that regional nuclear conflict may have ramifications for global ocean acidification.
document
https://n2t.org/ark:/85065/d7fb564s
eng
geoscientificInformation
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publication
2016-01-01T00:00:00Z
publication
2020-02-16T00:00:00Z
Copyright 2020 American Geophysical Union.
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