Rising Arctic Ocean temperatures cause gas hydrate destabilization and ocean acidification.

Biastoch, Arne, Treude, Tina, Rüpke, Lars H., Riebesell, Ulf, Roth, Christina, Burwicz, Ewa B., Park, Wonsun, Latif, Mojib, Böning, Claus W., Madec, Gurvan and Wallmann, Klaus (2011) Rising Arctic Ocean temperatures cause gas hydrate destabilization and ocean acidification. Geophysical Research Letters, 38 (8). L08602. DOI 10.1029/2011GL047222.

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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 (CH 4) 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.

Document Type: Article
Keywords: Meeresgeologie; Oceanography; Climatology; Ocean changes; gas hydrates; ocean acidification; ocean circulation; carbon cycling; seafloor morphology, geology, and geophysics; climate variability; benthic boundary layers
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-MG Marine Geosystems
OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-JRG-A2 Seafloor Warming
OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-BI Biological Oceanography
OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-MUHS Magmatic and Hydrothermal Systems
OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-JRG-B3 Seabed Resources
OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-TM Theory and Modeling
OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-ME Maritime Meteorology
OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-PO Physical Oceanography
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1029/2011GL047222
ISSN: 0094-8276
Expeditions/Models/Experiments:
Date Deposited: 21 Dec 2011 15:33
Last Modified: 20 Jun 2017 09:07
URI: http://oceanrep.geomar.de/id/eprint/13116

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