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dc.contributor.authorSong, Hajoon  Concept link
dc.contributor.authorLong, Matthew C.  Concept link
dc.contributor.authorGaube, Peter  Concept link
dc.contributor.authorFrenger, Ivy  Concept link
dc.contributor.authorMarshall, John  Concept link
dc.contributor.authorMcGillicuddy, Dennis J.  Concept link
dc.date.accessioned2018-07-02T17:29:28Z
dc.date.available2018-11-17T09:55:12Z
dc.date.issued2018-05-30
dc.identifier.citationGeophysical Research Letters 45 (2018): 5011-5019en_US
dc.identifier.urihttps://hdl.handle.net/1912/10447
dc.descriptionAuthor Posting. © American Geophysical Union, 2018. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 45 (2018): 5011-5019, doi:10.1029/2017GL076246.en_US
dc.description.abstractThe Antarctic Circumpolar Current has highly energetic mesoscale phenomena, but their impacts on phytoplankton biomass, productivity, and biogeochemical cycling are not understood well. We analyze satellite observations and an eddy‐rich ocean model to show that they drive chlorophyll anomalies of opposite sign in winter versus summer. In winter, deeper mixed layers in positive sea surface height (SSH) anomalies reduce light availability, leading to anomalously low chlorophyll concentrations. In summer with abundant light, however, positive SSH anomalies show elevated chlorophyll concentration due to higher iron level, and an iron budget analysis reveals that anomalously strong vertical mixing enhances iron supply to the mixed layer. Features with negative SSH anomalies exhibit the opposite tendencies: higher chlorophyll concentration in winter and lower in summer. Our results suggest that mesoscale modulation of iron supply, light availability, and vertical mixing plays an important role in causing systematic variations in primary productivity over the seasonal cycle.en_US
dc.language.isoen_USen_US
dc.publisherJohn Wiley & Sonsen_US
dc.relation.urihttps://doi.org/10.1029/2017GL076246
dc.subjectMesoscale eddyen_US
dc.subjectVertical mixingen_US
dc.subjectChlorophyllen_US
dc.subjectSouthern Oceanen_US
dc.subjectIronen_US
dc.subjectLighten_US
dc.titleSeasonal variation in the correlation between anomalies of sea level and chlorophyll in the Antarctic Circumpolar Currenten_US
dc.typeArticleen_US
dc.description.embargo2018-11-17en_US
dc.identifier.doi10.1029/2017GL076246


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