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Toward Quantifying the Increasing Role of Oceanic Heat in Sea Ice Loss in the New Arctic Public Deposited

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  • The loss of Arctic sea ice has emerged as a leading signal of global warming. This, together with acknowledged impacts on other components of the Earth system, has led to the term “the new Arctic.” Global coupled climate models predict that ice loss will continue through the twenty-first century, with implications for governance, economics, security, and global weather. A wide range in model projections reflects the complex, highly coupled interactions between the polar atmosphere, ocean, and cryosphere, including teleconnections to lower latitudes. This paper summarizes our present understanding of how heat reaches the ice base from the original sources—inflows of Atlantic and Pacific Water, river discharge, and summer sensible heat and shortwave radiative fluxes at the ocean/ice surface—and speculates on how such processes may change in the new Arctic. The complexity of the coupled Arctic system, and the logistic and technological challenges of working in the Arctic Ocean, require a coordinated interdisciplinary and international program that will not only improve understanding of this critical component of global climate but will also provide opportunities to develop human resources with the skills required to tackle related problems in complex climate systems. We propose a research strategy with components that include 1) improved mapping of the upper- and middepth Arctic Ocean, 2) enhanced quantification of important process, 3) expanded long-term monitoring at key heat-flux locations, and 4) development of numerical capabilities that focus on parameterization of heat-flux mechanisms and their interactions.
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  • Carmack, E., Polyakov, I., Padman, L., Fer, I., Hunke, E., Hutchings, J., ... & Winsor, P. (2015). Toward Quantifying the Increasing Role of Oceanic Heat in Sea Ice Loss in the New Arctic. Bulletin of the American Meteorological Society, 96(12), 2079-2105. doi:10.1175/BAMS-D-13-00177.1
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  • 96
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  • 12
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  • Financial support provided by IARC and by the College of Natural Science and Mathematics, University of Alaska Fairbanks.
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  • description.provenance : Submitted by Patricia Black (patricia.black@oregonstate.edu) on 2016-02-15T18:06:13Z No. of bitstreams: 1 HutchingsJCEOASTowardQuantiftyingIncreasing.pdf: 4261600 bytes, checksum: f5a78cbddd034aab03d341e50e4fae1b (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2016-02-15T18:06:45Z (GMT) No. of bitstreams: 1 HutchingsJCEOASTowardQuantiftyingIncreasing.pdf: 4261600 bytes, checksum: f5a78cbddd034aab03d341e50e4fae1b (MD5)
  • description.provenance : Made available in DSpace on 2016-02-15T18:06:45Z (GMT). No. of bitstreams: 1 HutchingsJCEOASTowardQuantiftyingIncreasing.pdf: 4261600 bytes, checksum: f5a78cbddd034aab03d341e50e4fae1b (MD5) Previous issue date: 2015-12

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