Simulated effects of southern hemispheric wind changes on the Pacific oxygen minimum zone.

Getzlaff, Julia, Dietze, Heiner and Oschlies, Andreas (2016) Simulated effects of southern hemispheric wind changes on the Pacific oxygen minimum zone. Open Access Geophysical Research Letters, 43 (2). pp. 728-734. DOI 10.1002/2015GL066841.

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Supplementary data:

Abstract

A coupled ocean biogeochemistry-circulation model is used to investigate the impact of observed past and anticipated future wind changes in the southern hemisphere on the oxygen minimum zone in the tropical Pacific. We consider the industrial period until the end of the 21st century and distinguish effects due to a strengthening of the westerlies from effects of a southward shift of the westerlies that is accompanied by a poleward expansion of the tropical trade winds. Our model results show that a strengthening of the westerlies counteracts part of the warming-induced decline in the global marine oxygen inventory. A poleward shift of the trade-westerlies boundary, however, triggers a significant decrease of oxygen in the tropical oxygen minimum zone. In a business-as-usual CO2 emission scenario, the poleward shift of the trade-westerlies boundary and warming-induced increase in stratification contribute equally to the expansion of suboxic waters in the tropical Pacific.

Document Type: Article
Additional Information: WOS:000372056400030
Keywords: SYSTEM CLIMATE MODEL; MERIDIONAL OVERTURNING CIRCULATION; OCEAN; TRENDS; GYRE
Research affiliation: OceanRep > SFB 754
OceanRep > SFB 754 > B1
OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-BM Biogeochemical Modeling
OceanRep > SFB 754 > A2
Refereed: Yes
Open Access Journal?: No
Publisher: AGU (American Geophysical Union), Wiley
Related URLs:
Projects: SFB754, BIOACID, Opendap
Date Deposited: 04 Jan 2016 11:08
Last Modified: 23 Sep 2019 19:49
URI: https://oceanrep.geomar.de/id/eprint/30771

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