Southern Ocean biological impacts on global ocean oxygen.

Keller, David P. , Kriest, Iris , Koeve, Wolfgang and Oschlies, Andreas (2016) Southern Ocean biological impacts on global ocean oxygen. Open Access Geophysical Research Letters, 43 (12). pp. 6469-6477. DOI 10.1002/2016GL069630.

grl54594.pdf - Published Version

Download (841Kb) | Preview
grl54594-sup-0001-supplementary.pdf - Supplemental Material

Download (2430Kb) | Preview

Supplementary data:


Southern Ocean (SO) physical and biological processes are known to have a large impact on global biogeochemistry. However, the role that SO biology plays in determining ocean oxygen concentrations is not completely understood. These dynamics are investigated here by shutting off SO biology in two marine biogeochemical models. The results suggest that SO biological processes reduce the ocean's oxygen content, mainly in the deep ocean, by 14 to 19%. However, since these processes also trap nutrients that would otherwise be transported northward to fuel productivity and subsequent organic matter export, consumption, and the accompanying oxygen consumption in midlatitude to low-latitude waters, SO biology helps to maintain higher oxygen concentrations in these subsurface waters. Thereby, SO biology can influence the size of the tropical oxygen minimum zones. As a result of ocean circulation the link between SO biological processes and remote oxygen changes operates on decadal to centennial time scales.

Document Type: Article
Keywords: ocean oxygen; Southern Ocean; oxygen minimum zones; marine biogeochemical modeling
Research affiliation: OceanRep > SFB 754
OceanRep > SFB 754 > B1
Kiel University
OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-BM Biogeochemical Modeling
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1002/2016GL069630
ISSN: 0094-8276
Related URLs:
Projects: BIOACID, SFB754, Opendap
Date Deposited: 30 Jun 2016 11:37
Last Modified: 23 Sep 2019 21:47

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...