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dc.contributor.authorRabe, Benjamin  Concept link
dc.contributor.authorKarcher, Michael  Concept link
dc.contributor.authorSchauer, Ursula  Concept link
dc.contributor.authorToole, John M.  Concept link
dc.contributor.authorKrishfield, Richard A.  Concept link
dc.contributor.authorPisarev, Sergey  Concept link
dc.contributor.authorKauker, Frank  Concept link
dc.contributor.authorGerdes, Rudiger  Concept link
dc.contributor.authorKikuchi, Takashi  Concept link
dc.date.accessioned2011-01-07T17:37:18Z
dc.date.available2011-01-07T17:37:18Z
dc.date.issued2010-12-10
dc.identifier.urihttps://hdl.handle.net/1912/4296
dc.descriptionAuthor Posting. © The Author(s), 2010. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Deep Sea Research Part I: Oceanographic Research Papers 58 (2011): 173-185, doi:10.1016/j.dsr.2010.12.002.en_US
dc.description.abstractUnprecedented summer-season sampling of the Arctic Ocean during the period 2006−2008 makes possible a quasi-synoptic estimate of liquid freshwater (LFW) inventories in the Arctic Ocean basins. In comparison to observations from 1992−1999, LFW content relative to a salinity of 35 in the layer from the surface to the 34 isohaline increased by 8400 ± 2000 km3 in the Arctic Ocean (water depth greater than 500m). This is close to the annual export of freshwater (liquid and solid) from the Arctic Ocean reported in the literature. Observations and a model simulation show regional variations in LFW were both due to changes in the depth of the lower halocline, often forced by regional wind-induced Ekman pumping, and a mean freshening of the water column above this depth, associated with an increased net sea ice melt and advection of increased amounts of river water from the Siberian shelves. Over the whole Arctic Ocean, changes in the observed mean salinity above the 34 isohaline dominated estimated changes in LFW content; the contribution to LFW change by bounding isohaline depth changes was less than a quarter of the salinity contribution, and non-linear effects due to both factors were negligible.en_US
dc.description.sponsorshipThis work was supported by the Co-Operative Project “The North Atlantic as Part of the Earth System: From System Comprehension to Analysis of Regional Impacts” funded by the German Federal Ministry for Education and Research (BMBF) and by the European Union Sixth Framework Programme project DAMOCLES (Developing Arctic Modelling and Observing Capabilities for Long-term Environment Studies), contract number 018509GOCE.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoenen_US
dc.relation.urihttps://doi.org/10.1016/j.dsr.2010.12.002
dc.subjectArcticen_US
dc.subjectFreshwateren_US
dc.subjectObservationen_US
dc.subjectModelen_US
dc.subjectIPYen_US
dc.subjectUpper Oceanen_US
dc.titleAn assessment of Arctic Ocean freshwater content changes from the 1990s to the 2006-2008 perioden_US
dc.typePreprinten_US


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