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dc.contributor.authorSiedlecki, Samantha A.  Concept link
dc.contributor.authorBanas, Neil S.  Concept link
dc.contributor.authorDavis, Kristen A.  Concept link
dc.contributor.authorGiddings, Sarah N.  Concept link
dc.contributor.authorHickey, Barbara M.  Concept link
dc.contributor.authorMacCready, Parker  Concept link
dc.contributor.authorConnolly, Thomas P.  Concept link
dc.contributor.authorGeier, S.  Concept link
dc.date.accessioned2015-05-13T18:07:02Z
dc.date.available2015-08-05T08:40:00Z
dc.date.issued2015-02-05
dc.identifier.citationJournal of Geophysical Research: Oceans 120 (2015): 608–633en_US
dc.identifier.urihttps://hdl.handle.net/1912/7286
dc.descriptionAuthor Posting. © American Geophysical Union, 2015. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 120 (2015): 608–633, doi:10.1002/2014JC010254.en_US
dc.description.abstractThe coastal waters of the northern portion of the California Current System experience a seasonal decline in oxygen concentrations and hypoxia over the summer upwelling season that results in negative impacts on habitat for many organisms. Using a regional model extending from 43°N to 50°N, with an oxygen component developed in this study, drivers of seasonal and regional oxygen variability are identified. The model includes two pools of detritus, which was an essential addition in order to achieve good agreement with the observations. The model was validated using an extensive array of hydrographic and moored observations. The model captures the observed seasonal decline as well as spatial trends in bottom oxygen. Spatially, three regions of high respiration are identified as locations where hypoxia develops each modeled year. Two of the regions are previously identified recirculation regions. The third region is off of the Washington coast. Sediment oxygen demand causes the region on the Washington coast to be susceptible to hypoxia and is correlated to the broad area of shallow shelf (<60 m) in the region. Respiration and circulation-driven divergence contribute similar (60, 40%, respectively) amounts to the integrated oxygen budget on the Washington coast while respiration dominates the Oregon coast. Divergence, or circulation, contributes to the oxygen dynamics on the shelf in two ways: first, through the generation of retention features, and second, by determining variability.en_US
dc.description.sponsorshipThis work was supported by a postdoctoral fellowship to Samantha Siedlecki from JISAO and the Program on Climate Change at the University of Washington, and grants from the Coastal Ocean Program of the National Oceanic and Atmospheric Administration (NOAA) (NA09NOS4780180) and the National Science Foundation (NSF) (OCE0942675) as part of the Pacific Northwest Toxins (PNWTOX) project.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherJohn Wiley & Sonsen_US
dc.relation.urihttps://doi.org/10.1002/2014JC010254
dc.subjectHypoxiaen_US
dc.subjectOxygenen_US
dc.subjectRespirationen_US
dc.subjectUpwellingen_US
dc.titleSeasonal and interannual oxygen variability on the Washington and Oregon continental shelvesen_US
dc.typeArticleen_US
dc.description.embargo2015-08-05en_US
dc.identifier.doi10.1002/2014JC010254


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