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dc.contributor.authorCarmack, Edward C.  Concept link
dc.contributor.authorYamamoto-Kawai, Michiyo  Concept link
dc.contributor.authorHaine, Thomas W. N.  Concept link
dc.contributor.authorBacon, Sheldon  Concept link
dc.contributor.authorBluhm, Bodil A.  Concept link
dc.contributor.authorLique, Camille  Concept link
dc.contributor.authorMelling, Humfrey  Concept link
dc.contributor.authorPolyakov, Igor V.  Concept link
dc.contributor.authorStraneo, Fiamma  Concept link
dc.contributor.authorTimmermans, Mary-Louise  Concept link
dc.contributor.authorWilliams, William J.  Concept link
dc.identifier.citationJournal of Geophysical Research: Biogeosciences 121 (2016): 675-717en_US
dc.description© The Author(s), 2016. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Journal of Geophysical Research: Biogeosciences 121 (2016): 675-717, doi:10.1002/2015JG003140.en_US
dc.description.abstractThe Arctic Ocean is a fundamental node in the global hydrological cycle and the ocean's thermohaline circulation. We here assess the system's key functions and processes: (1) the delivery of fresh and low-salinity waters to the Arctic Ocean by river inflow, net precipitation, distillation during the freeze/thaw cycle, and Pacific Ocean inflows; (2) the disposition (e.g., sources, pathways, and storage) of freshwater components within the Arctic Ocean; and (3) the release and export of freshwater components into the bordering convective domains of the North Atlantic. We then examine physical, chemical, or biological processes which are influenced or constrained by the local quantities and geochemical qualities of freshwater; these include stratification and vertical mixing, ocean heat flux, nutrient supply, primary production, ocean acidification, and biogeochemical cycling. Internal to the Arctic the joint effects of sea ice decline and hydrological cycle intensification have strengthened coupling between the ocean and the atmosphere (e.g., wind and ice drift stresses, solar radiation, and heat and moisture exchange), the bordering drainage basins (e.g., river discharge, sediment transport, and erosion), and terrestrial ecosystems (e.g., Arctic greening, dissolved and particulate carbon loading, and altered phenology of biotic components). External to the Arctic freshwater export acts as both a constraint to and a necessary ingredient for deep convection in the bordering subarctic gyres and thus affects the global thermohaline circulation. Geochemical fingerprints attained within the Arctic Ocean are likewise exported into the neighboring subarctic systems and beyond. Finally, we discuss observed and modeled functions and changes in this system on seasonal, annual, and decadal time scales and discuss mechanisms that link the marine system to atmospheric, terrestrial, and cryospheric systems.en_US
dc.description.sponsorshipWorld Climate Research Program-Climate and Cryosphere (WCRP-CliC); Arctic Monitoring and Assessment Program (AMAP) International Arctic Science Committee (IASC); Norwegian Ministries of Environment and of Foreign Affairs; Swedish Secretariat for Environmental Earth System Sciences (SSEESS); Swedish Polar Research Secretariat; NSF Grant Numbers: OCE 1130008, 1249133, AON-1203473, AON-1338948, OCE 1434041; Polar Research Programme of the Norwegian Research Council Grant Number: 226415en_US
dc.publisherJohn Wiley & Sonsen_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.subjectCarbon cycleen_US
dc.titleFreshwater and its role in the Arctic Marine System : sources, disposition, storage, export, and physical and biogeochemical consequences in the Arctic and global oceansen_US

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