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Arctic tidal current atlas.

Till M Baumann1,2,3, Igor V Polyakov4,5, Laurie Padman6

  • 1International Arctic Research Center and College of Natural Science and Mathematics, University of Alaska Fairbanks (UAF), Fairbanks, AK, USA. till.baumann@uib.no.

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This study presents a pan-Arctic atlas of tidal currents using two decades of observations. The atlas aids in understanding Arctic ocean dynamics, climate change impacts, and marine ecosystems.

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Area of Science:

  • Oceanography
  • Climate Science
  • Marine Ecology

Background:

  • Near-inertial currents, driven by tides and wind, significantly influence Arctic climate and marine ecosystems.
  • Understanding these currents is crucial for assessing climate change impacts and managing Arctic marine resources.

Purpose of the Study:

  • To create a comprehensive pan-Arctic atlas of tidal band currents using historical moored observations.
  • To provide tools for analyzing tidal parameters across various time scales and high-frequency ocean dynamics.

Main Methods:

  • Compiled 429 moored current observations from the Arctic spanning the last two decades.
  • Developed tidal current products for monthly to inter-annual analyses.
  • Included 10-30 hour band-pass filtered currents to capture tidal constituents and wind-driven inertial currents.

Main Results:

  • Assembled a pan-Arctic atlas of tidal currents, offering diverse analytical products.
  • The atlas facilitates the study of tidal parameters, kinetic energy trends, and ocean model validation.
  • Provides data for analyzing high-frequency ocean dynamics, including baroclinic tidal currents.

Conclusions:

  • The pan-Arctic tidal current atlas is a valuable resource for scientific research and industrial applications.
  • It supports local case studies, long-term trend assessments, and Arctic-wide ocean model validation.
  • The atlas can inform resource management, fisheries, navigation, and offshore construction in the Arctic.