Properties and origins of the anisotropic eddy-induced transport in the North Atlantic

Igor Kamenkovich, Irina I. Rypina, Pavel Berloff

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

This study examines anisotropic transport properties of the eddying North Atlantic flow, using an idealized model of the double-gyre oceanic circulation and altimetry-derived velocities. The material transport by the time-dependent flow (quantified by the eddy diffusivity tensor) varies geographically and is anisotropic, that is, it has a well-defined direction of the maximum transport. One component of the time-dependent flow, zonally elongated large-scale transients, is particularly important for the anisotropy, as it corresponds to primarily zonal material transport and long correlation time scales. The importance of these large-scale zonal transients in the material distribution is further confirmed with simulations of idealized color dye tracers, which has implications for parameterizations of the eddy transport in non-eddy-resolving models.

Original languageEnglish (US)
Pages (from-to)778-791
Number of pages14
JournalJournal of Physical Oceanography
Volume45
Issue number3
DOIs
StatePublished - 2015

Keywords

  • Circulation/Dynamics
  • Eddies
  • Lagrangian circulation/transport
  • Mesoscale processes
  • Models and modeling
  • Ocean circulation
  • Tracers

ASJC Scopus subject areas

  • Oceanography

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