Ocean Deoxygenation in a Warming World.

Keeling, Ralph F., Körtzinger, Arne and Gruber, Nicolas (2010) Ocean Deoxygenation in a Warming World. Annual Review of Marine Science, 2 (1). pp. 199-229. DOI 10.1146/annurev.marine.010908.163855.

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Ocean warming and increased stratification of the upper ocean caused by global climate change will likely lead to declines in dissolved O2 in the ocean interior (ocean deoxygenation) with implications for ocean productivity, nutrient cycling, carbon cycling, and marine habitat. Ocean models predict declines of 1 to 7% in the global ocean O2 inventory over the next century, with declines continuing for a thousand years or more into the future. An important consequence may be an expansion in the area and volume of so-called oxygen minimum zones, where O2 levels are too low to support many macrofauna and profound changes in biogeochemical cycling occur. Significant deoxygenation has occurred over the past 50 years in the North Pacific and tropical oceans, suggesting larger changes are looming. The potential for larger O2 declines in the future suggests the need for an improved observing system for tracking ocean O2 changes.

Document Type: Article
Keywords: Climatology; Chemistry; global warming, ocean oxygen depletion, oxygen utilization, hypoxia, stratification, ventilation, carbon cycle, oxygen cycle, eutrophication
Research affiliation: OceanRep > SFB 754
OceanRep > SFB 754 > A4
OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-CH Chemical Oceanography
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1146/annurev.marine.010908.163855
ISSN: 1941-1405
Projects: SFB754, Future Ocean
Date Deposited: 16 Jul 2010 12:19
Last Modified: 23 Sep 2019 22:43
URI: http://oceanrep.geomar.de/id/eprint/8673

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