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dc.contributor.authorPacini, Astrid
dc.contributor.authorMoore, George William Kent
dc.contributor.authorPickart, Robert S.
dc.contributor.authorNobre, Carolina
dc.contributor.authorBahr, Frank
dc.contributor.authorVåge, Kjetil
dc.contributor.authorArrigo, Kevin R.
dc.date.accessioned2020-05-22T12:32:08Z
dc.date.available2020-05-22T12:32:08Z
dc.date.issued2019
dc.PublishedPacini, Moore GWK, Pickart RS, Nobre C, Bahr F, Våge K, Arrigo KR. Characteristics and Transformation of Pacific Winter Water on the Chukchi Sea Shelf in Late Spring. Journal of Geophysical Research (JGR): Oceans. 2019;124(10):7153-7177eng
dc.identifier.issn2169-9291en_US
dc.identifier.issn2169-9275en_US
dc.identifier.urihttps://hdl.handle.net/1956/22350
dc.description.abstractData from a late spring survey of the northeast Chukchi Sea are used to investigate various aspects of newly ventilated winter water (NVWW). More than 96% of the water sampled on the shelf was NVWW, the saltiest (densest) of which tended to be in the main flow pathways on the shelf. Nearly all of the hydrographic profiles on the shelf displayed a two‐layer structure, with a surface mixed layer and bottom boundary layer separated by a weak density interface (on the order of 0.02 kg/m3). Using a polynya model to drive a one‐dimensional mixing model, it was demonstrated that, on average, the profiles would become completely homogenized within 14–25 hr when subjected to the March and April heat fluxes. A subset of the profiles would become homogenized when subjected to the May heat fluxes. Since the study domain contained numerous leads within the pack ice—many of them refreezing—and since some of the measured profiles were vertically uniform in density, this suggests that NVWW is formed throughout the Chukchi shelf via convection within small openings in the ice. This is consistent with the result that the salinity signals of the NVWW along the central shelf pathway cannot be explained solely by advection from Bering Strait or via modification within large polynyas. The local convection would be expected to stir nutrients into the water column from the sediments, which explains the high nitrate concentrations observed throughout the shelf. This provides a favorable initial condition for phytoplankton growth on the Chukchi shelf.en_US
dc.language.isoengeng
dc.publisherAmerican Geophysical Unionen_US
dc.titleCharacteristics and Transformation of Pacific Winter Water on the Chukchi Sea Shelf in Late Springen_US
dc.typePeer reviewed
dc.typeJournal article
dc.date.updated2020-02-11T10:23:33Z
dc.description.versionpublishedVersionen_US
dc.rights.holderCopyright 2019. American Geophysical Union. All Rights Reserved.en_US
dc.identifier.doihttps://doi.org/10.1029/2019jc015261
dc.identifier.cristin1763490
dc.source.journalJournal of Geophysical Research (JGR): Oceans
dc.relation.projectTrond Mohn stiftelse: BFS2016REK01
dc.subject.nsiVDP::Matematikk og naturvitenskap: 400::Geofag: 450::Oseanografi: 452
dc.subject.nsiVDP::Mathematics and natural scienses: 400::Geosciences: 450::Oceanography: 452


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