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Rising Arctic Ocean temperatures cause gas hydrate destabilization and ocean acidification

Rising Arctic Ocean temperatures cause gas hydrate destabilization and ocean acidification
Rising Arctic Ocean temperatures cause gas hydrate destabilization and ocean acidification
Vast amounts of methane hydrates are potentially stored in sediments along the continental margins, owing their stability to low temperature – high pressure conditions. Global warming could destabilize these hydrates and cause a release of methane (CH4) into the water column and possibly the atmosphere. Since the Arctic has and will be warmed considerably, Arctic bottom water temperatures and their future evolution projected by a climate model were analyzed. The resulting warming is spatially inhomogeneous, with the strongest impact on shallow regions affected by Atlantic inflow. Within the next 100 years, the warming affects 25% of shallow and mid?depth regions containing methane hydrates. Release of methane from melting hydrates in these areas could enhance ocean acidification and oxygen depletion in the water column. The impact of methane release on global warming, however, would not be significant within the considered time span.
0094-8276
L08602
Biastoch, A.
fa7df768-2a47-4071-aafc-30f36910def8
Treude, T.
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Rüpke, L.H.
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Riebesell, U.
e7c40989-08fd-453c-b59f-f30c1b271413
Roth, C.
300c9bee-4761-4f4e-b267-4e1ff7c018bc
Burwicz, E.B.
5135d92d-0b0e-4756-bf54-0a01e3e9497e
Park, W.
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Latif, M.
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Böning, C.W.
be7665d8-9f23-4eab-97e8-751a96a78347
Madec, G.
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Wallmann, K.
ac0d3265-1891-40b3-b017-61759ab6d096
Biastoch, A.
fa7df768-2a47-4071-aafc-30f36910def8
Treude, T.
bf159958-9b8f-4d23-acf2-2b1842a3cd0f
Rüpke, L.H.
e42908b0-ab60-4798-910a-7e859b4725fa
Riebesell, U.
e7c40989-08fd-453c-b59f-f30c1b271413
Roth, C.
300c9bee-4761-4f4e-b267-4e1ff7c018bc
Burwicz, E.B.
5135d92d-0b0e-4756-bf54-0a01e3e9497e
Park, W.
0cd27071-8eb9-40f1-b86c-9c89307e18fe
Latif, M.
d1729715-2cf5-457f-84a8-75978399e42a
Böning, C.W.
be7665d8-9f23-4eab-97e8-751a96a78347
Madec, G.
7e2ec04b-896a-4861-b2d0-b74f39d748c2
Wallmann, K.
ac0d3265-1891-40b3-b017-61759ab6d096

Biastoch, A., Treude, T., Rüpke, L.H., Riebesell, U., Roth, C., Burwicz, E.B., Park, W., Latif, M., Böning, C.W., Madec, G. and Wallmann, K. (2011) Rising Arctic Ocean temperatures cause gas hydrate destabilization and ocean acidification. Geophysical Research Letters, 38 (8), L08602. (doi:10.1029/2011GL047222).

Record type: Article

Abstract

Vast amounts of methane hydrates are potentially stored in sediments along the continental margins, owing their stability to low temperature – high pressure conditions. Global warming could destabilize these hydrates and cause a release of methane (CH4) into the water column and possibly the atmosphere. Since the Arctic has and will be warmed considerably, Arctic bottom water temperatures and their future evolution projected by a climate model were analyzed. The resulting warming is spatially inhomogeneous, with the strongest impact on shallow regions affected by Atlantic inflow. Within the next 100 years, the warming affects 25% of shallow and mid?depth regions containing methane hydrates. Release of methane from melting hydrates in these areas could enhance ocean acidification and oxygen depletion in the water column. The impact of methane release on global warming, however, would not be significant within the considered time span.

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Published date: 2011
Organisations: Marine Systems Modelling, National Oceanography Centre,Southampton

Identifiers

Local EPrints ID: 191591
URI: https://eprints.soton.ac.uk/id/eprint/191591
ISSN: 0094-8276
PURE UUID: 14132de2-691a-40f5-a1f6-84eebf1a79d8

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Date deposited: 22 Jun 2011 12:47
Last modified: 16 Jul 2019 23:27

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Contributors

Author: A. Biastoch
Author: T. Treude
Author: L.H. Rüpke
Author: U. Riebesell
Author: C. Roth
Author: E.B. Burwicz
Author: W. Park
Author: M. Latif
Author: C.W. Böning
Author: G. Madec
Author: K. Wallmann

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