Contribution of oxygen minimum zone waters to the coastal upwelling off Mauritania.

Gleßmer, Mirjam, Eden, Carsten and Oschlies, Andreas (2009) Contribution of oxygen minimum zone waters to the coastal upwelling off Mauritania. Progress in Oceanography, 83 . pp. 143-150. DOI 10.1016/j.pocean.2009.07.015.

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Abstract

The coastal upwelling off Mauritania and its connection with the oxygen minimum zone (OMZ) in the tropical Atlantic is investigated in an eddy-resolving general circulation model. Two main supply routes for the upwelling are identified. First a southern eastward pathway crossing 23 degrees W between 3 degrees N and 10 degrees N related to the equatorial zonal current system supplies up to 50% of the water upwelled in winter, and about 30% in summer. Second, another eastward pathway crossing 23 degrees W further north between 28 degrees N and 38 degrees N supplies 35% of the upwelled water in spring compared to 25% during the rest of the year. Most of the water of the northern pathway is entrained into the mixed layer already before reaching the upwelling region. Only the southern pathway contributes not recently ventilated waters to the upwelling. The connection with the OMZ is very weak, only about 1% of the upwelling waters originate here. On the other hand, if water from the OMZ reaches the surface mixed layer within 6 years, this mostly (71%) happens in the upwelling region

Document Type: Article
Additional Information: WOS:000273242100012
Keywords: OCEAN CIRCULATION; NORTHWEST AFRICA; EASTERN BOUNDARY; SEA-SURFACE; ATLANTIC; CYCLE; MODEL; AREA
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-BM Biogeochemical Modeling
OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-TM Theory and Modeling
OceanRep > The Future Ocean - Cluster of Excellence
OceanRep > SFB 754
OceanRep > SFB 754 > A1
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1016/j.pocean.2009.07.015
ISSN: 0079-6611
Projects: SOPRAN, SFB754, Future Ocean
Date Deposited: 09 Dec 2009 14:40
Last Modified: 04 Oct 2016 13:23
URI: http://oceanrep.geomar.de/id/eprint/3265

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