skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Isopycnal eddy mixing across the Kuroshio Extension: Stable versus unstable states in an eddying model

Abstract

The Kuroshio Extension (KE) jet transitions between stable and unstable states on interannual time scales. Cross-jet eddy mixing in the two states is contrasted in the KE region (28°-240°N; 125°-165°E), using a global eddying 0.1° configuration of the Parallel Ocean Program with online numerical particles. The 4 year period chosen (June 1994 to May 1998) covers a full cycle of the stable state, unstable state and the transition period. Large values of cross-jet eddy diffusivities within the KE jet are concentrated in the upper 1000 m. In the upper ocean, elevated cross-jet mixing within the KE jet is mainly concentrated in the downstream part of the KE jet, where the jet is weak but eddy activity is strong. The simulated time-mean KE jet is more intense and extends further east in the stable state than in the unstable state. Consequently, strong cross-jet mixing within the KE jet is located west of 150°E during June 1996 to May 1997 (a typical unstable state), but east of 150°E during June 1995 to May 1996 (a typical stable state). However, average mixing within the KE jet is indistinguishable in the typical stable and unstable states. In the deep ocean, mixing is strongly influencedmore » by topography, and thus their horizontal structures have less inter-annual variability than in the upper ocean. One caveat is that results here cover one representative cycle of the two states. To obtain the climate mean mixing structures for the stable or unstable state, one would need numerical output covering a period much longer than 4 years.« less

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Univ. of California, San Diego, CA (United States). Scripps Inst. of Oceanography
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Univ. of California, San Diego, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1466296
Alternate Identifier(s):
OSTI ID: 1402391
Grant/Contract Number:  
SC0014440; SC0012778; TG-OCE-130018
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Geophysical Research. Oceans
Additional Journal Information:
Journal Volume: 122; Journal Issue: 5; Journal ID: ISSN 2169-9275
Publisher:
American Geophysical Union
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; isopycnal mixing; Kuroshio Extension; stable and unstable states; jets; mesoscale eddies

Citation Formats

Chen, Ru, Gille, Sarah T., and McClean, Julie L. Isopycnal eddy mixing across the Kuroshio Extension: Stable versus unstable states in an eddying model. United States: N. p., 2017. Web. doi:10.1002/2016JC012164.
Chen, Ru, Gille, Sarah T., & McClean, Julie L. Isopycnal eddy mixing across the Kuroshio Extension: Stable versus unstable states in an eddying model. United States. doi:10.1002/2016JC012164.
Chen, Ru, Gille, Sarah T., and McClean, Julie L. Mon . "Isopycnal eddy mixing across the Kuroshio Extension: Stable versus unstable states in an eddying model". United States. doi:10.1002/2016JC012164. https://www.osti.gov/servlets/purl/1466296.
@article{osti_1466296,
title = {Isopycnal eddy mixing across the Kuroshio Extension: Stable versus unstable states in an eddying model},
author = {Chen, Ru and Gille, Sarah T. and McClean, Julie L.},
abstractNote = {The Kuroshio Extension (KE) jet transitions between stable and unstable states on interannual time scales. Cross-jet eddy mixing in the two states is contrasted in the KE region (28°-240°N; 125°-165°E), using a global eddying 0.1° configuration of the Parallel Ocean Program with online numerical particles. The 4 year period chosen (June 1994 to May 1998) covers a full cycle of the stable state, unstable state and the transition period. Large values of cross-jet eddy diffusivities within the KE jet are concentrated in the upper 1000 m. In the upper ocean, elevated cross-jet mixing within the KE jet is mainly concentrated in the downstream part of the KE jet, where the jet is weak but eddy activity is strong. The simulated time-mean KE jet is more intense and extends further east in the stable state than in the unstable state. Consequently, strong cross-jet mixing within the KE jet is located west of 150°E during June 1996 to May 1997 (a typical unstable state), but east of 150°E during June 1995 to May 1996 (a typical stable state). However, average mixing within the KE jet is indistinguishable in the typical stable and unstable states. In the deep ocean, mixing is strongly influenced by topography, and thus their horizontal structures have less inter-annual variability than in the upper ocean. One caveat is that results here cover one representative cycle of the two states. To obtain the climate mean mixing structures for the stable or unstable state, one would need numerical output covering a period much longer than 4 years.},
doi = {10.1002/2016JC012164},
journal = {Journal of Geophysical Research. Oceans},
issn = {2169-9275},
number = 5,
volume = 122,
place = {United States},
year = {2017},
month = {4}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Cyclogenesis in the deep ocean beneath the Gulf Stream: 2. Dynamics
journal, August 1999

  • Savidge, Dana K.; Bane, John M.
  • Journal of Geophysical Research: Oceans, Vol. 104, Issue C8
  • DOI: 10.1029/1999JC900131

Reconciling float-based and tracer-based estimates of lateral diffusivities
journal, July 2012

  • Klocker, Andreas; Ferrari, Raffaele; Lacasce, Joseph H.
  • Journal of Marine Research, Vol. 70, Issue 4
  • DOI: 10.1357/002224012805262743

Kuroshio pathways in a climatologically forced model
journal, July 2012

  • Douglass, Elizabeth M.; Jayne, Steven R.; Bryan, Frank O.
  • Journal of Oceanography, Vol. 68, Issue 5
  • DOI: 10.1007/s10872-012-0123-y

Properties and Origins of the Anisotropic Eddy-Induced Transport in the North Atlantic
journal, March 2015

  • Kamenkovich, Igor; Rypina, Irina I.; Berloff, Pavel
  • Journal of Physical Oceanography, Vol. 45, Issue 3
  • DOI: 10.1175/JPO-D-14-0164.1

Global observations of nonlinear mesoscale eddies
journal, October 2011


The Kuroshio Extension and its recirculation gyres
journal, December 2009

  • Jayne, Steven R.; Hogg, Nelson G.; Waterman, Stephanie N.
  • Deep Sea Research Part I: Oceanographic Research Papers, Vol. 56, Issue 12
  • DOI: 10.1016/j.dsr.2009.08.006

Eddy–Mean Flow Interaction in the Kuroshio Extension Region
journal, June 2011

  • Waterman, Stephanie; Hogg, Nelson G.; Jayne, Steven R.
  • Journal of Physical Oceanography, Vol. 41, Issue 6
  • DOI: 10.1175/2010JPO4564.1

Estimating a Submesoscale Diffusivity Using a Roughness Measure Applied to a Tracer Release Experiment in the Southern Ocean
journal, June 2015

  • Boland, Emma J. D.; Shuckburgh, Emily; Haynes, Peter H.
  • Journal of Physical Oceanography, Vol. 45, Issue 6
  • DOI: 10.1175/JPO-D-14-0047.1

Enhanced Diapycnal Diffusivity in Intrusive Regions of the Drake Passage
journal, April 2016

  • Merrifield, Sophia T.; Laurent, Louis St.; Owens, Breck
  • Journal of Physical Oceanography, Vol. 46, Issue 4
  • DOI: 10.1175/JPO-D-15-0068.1

Isopycnal Eddy Diffusivities and Critical Layers in the Kuroshio Extension from an Eddying Ocean Model
journal, August 2014

  • Chen, Ru; McClean, Julie L.; Gille, Sarah T.
  • Journal of Physical Oceanography, Vol. 44, Issue 8
  • DOI: 10.1175/JPO-D-13-0258.1

Suppression of Eddy Diffusivity across Jets in the Southern Ocean
journal, July 2010

  • Ferrari, Raffaele; Nikurashin, Maxim
  • Journal of Physical Oceanography, Vol. 40, Issue 7
  • DOI: 10.1175/2010JPO4278.1

Progress of North Pacific mode water research in the past decade
journal, June 2011


Where do ocean eddy heat fluxes matter?
journal, June 1999

  • Wunsch, Carl
  • Journal of Geophysical Research: Oceans, Vol. 104, Issue C6
  • DOI: 10.1029/1999JC900062

The Oceanic Eddy Heat Transport*
journal, December 2002


Drifter-derived maps of lateral diffusivity in the Pacific and Atlantic Oceans in relation to surface circulation patterns
journal, January 2004


Seasonal Mesoscale and Submesoscale Eddy Variability along the North Pacific Subtropical Countercurrent
journal, December 2014

  • Qiu, Bo; Chen, Shuiming; Klein, Patrice
  • Journal of Physical Oceanography, Vol. 44, Issue 12
  • DOI: 10.1175/JPO-D-14-0071.1

A tracer-based inversion method for diagnosing eddy-induced diffusivity and advection
journal, February 2015


Diagnosing Isopycnal Diffusivity in an Eddying, Idealized Midlatitude Ocean Basin via Lagrangian, in Situ, Global, High-Performance Particle Tracking (LIGHT)
journal, August 2015

  • Wolfram, Phillip J.; Ringler, Todd D.; Maltrud, Mathew E.
  • Journal of Physical Oceanography, Vol. 45, Issue 8
  • DOI: 10.1175/JPO-D-14-0260.1

Rationalizing the Spatial Distribution of Mesoscale Eddy Diffusivity in Terms of Mixing Length Theory
journal, June 2014

  • Bates, Michael; Tulloch, Ross; Marshall, John
  • Journal of Physical Oceanography, Vol. 44, Issue 6
  • DOI: 10.1175/JPO-D-13-0130.1

Lagrangian analysis by clustering
journal, June 2010


Implicit free-surface method for the Bryan-Cox-Semtner ocean model
journal, January 1994

  • Dukowicz, John K.; Smith, Richard D.
  • Journal of Geophysical Research, Vol. 99, Issue C4
  • DOI: 10.1029/93JC03455

Relative dispersion in the subsurface North Atlantic
journal, November 2000


Propagation of Kuroshio Extension Meanders between 143° and 149°E
journal, April 2012

  • Tracey, Karen L.; Watts, D. Randolph; Donohue, Kathleen A.
  • Journal of Physical Oceanography, Vol. 42, Issue 4
  • DOI: 10.1175/JPO-D-11-0138.1

Evidence for seafloor-intensified mixing by surface-generated equatorial waves: ABYSSAL MIXING IN THE EQUATORIAL PACIFIC
journal, February 2016

  • Holmes, R. M.; Moum, J. N.; Thomas, L. N.
  • Geophysical Research Letters, Vol. 43, Issue 3
  • DOI: 10.1002/2015GL066472

Transition processes between the three typical paths of the Kuroshio
journal, June 1986

  • Kawabe, Masaki
  • Journal of the Oceanographical Society of Japan, Vol. 42, Issue 3
  • DOI: 10.1007/BF02109352

Eddy parameterization challenge suite I: Eady spindown
journal, April 2013


Eddy-Induced Particle Dispersion in the Near-Surface North Atlantic
journal, December 2012

  • Rypina, Irina I.; Kamenkovich, Igor; Berloff, Pavel
  • Journal of Physical Oceanography, Vol. 42, Issue 12
  • DOI: 10.1175/JPO-D-11-0191.1

Enhancement of Mesoscale Eddy Stirring at Steering Levels in the Southern Ocean
journal, January 2010

  • Abernathey, Ryan; Marshall, John; Mazloff, Matt
  • Journal of Physical Oceanography, Vol. 40, Issue 1
  • DOI: 10.1175/2009JPO4201.1

Uncertainties in global mapping of Argo drift data at the parking level
journal, July 2010


Control of Lower-Limb Overturning Circulation in the Southern Ocean by Diapycnal Mixing and Mesoscale Eddy Transfer
journal, December 2008

  • Ito, Taka; Marshall, John
  • Journal of Physical Oceanography, Vol. 38, Issue 12
  • DOI: 10.1175/2008JPO3878.1

Influence of the Decadal Variability of the Kuroshio Extension on the Atmospheric Circulation in the Cold Season
journal, March 2016

  • Révelard, Adèle; Frankignoul, Claude; Sennéchael, Nathalie
  • Journal of Climate, Vol. 29, Issue 6
  • DOI: 10.1175/JCLI-D-15-0511.1

Eulerian and Lagrangian Isopycnal Eddy Diffusivities in the Southern Ocean of an Eddying Model
journal, February 2014

  • Griesel, A.; McClean, J. L.; Gille, S. T.
  • Journal of Physical Oceanography, Vol. 44, Issue 2
  • DOI: 10.1175/JPO-D-13-039.1

Roles of Mesoscale Eddies in the Kuroshio Paths
journal, October 2004


Modeling eddy transport of passive tracers
journal, August 1987


Observing the general circulation with floats
journal, January 1991


The response of the Pacific storm track and atmospheric circulation to Kuroshio Extension variability: Response of Storm Tracks to Kuroshio Extension Variability
journal, March 2014

  • O'Reilly, Christopher H.; Czaja, Arnaud
  • Quarterly Journal of the Royal Meteorological Society, Vol. 141, Issue 686
  • DOI: 10.1002/qj.2334

Effects of Eddy Vorticity Forcing on the Mean State of the Kuroshio Extension
journal, May 2015

  • Delman, Andrew S.; McClean, Julie L.; Sprintall, Janet
  • Journal of Physical Oceanography, Vol. 45, Issue 5
  • DOI: 10.1175/JPO-D-13-0259.1

Evidence of Vertical Coupling between the Kuroshio Extension and Topographically Controlled Deep Eddies
journal, September 2012

  • Greene, Andrew D.; Watts, D. Randolph; Sutyrin, Georgi G.
  • Journal of Marine Research, Vol. 70, Issue 5
  • DOI: 10.1357/002224012806290723

Isopycnal diffusivities in the Antarctic Circumpolar Current inferred from Lagrangian floats in an eddying model
journal, January 2010

  • Griesel, A.; Gille, S. T.; Sprintall, J.
  • Journal of Geophysical Research, Vol. 115, Issue C6
  • DOI: 10.1029/2009JC005821

Horizontal mixing in the Southern Ocean from Argo float trajectories: MIXING IN THE SOUTHERN OCEAN FROM ARGO
journal, August 2016

  • Roach, Christopher J.; Balwada, Dhruv; Speer, Kevin
  • Journal of Geophysical Research: Oceans, Vol. 121, Issue 8
  • DOI: 10.1002/2015JC011440

Variability of the Kuroshio Extension Jet, Recirculation Gyre, and Mesoscale Eddies on Decadal Time Scales
journal, November 2005

  • Qiu, Bo; Chen, Shuiming
  • Journal of Physical Oceanography, Vol. 35, Issue 11
  • DOI: 10.1175/JPO2807.1

Program Studies the Kuroshio Extension
journal, April 2008

  • Donohue, Kathleen; Watts, D. Randolph; Tracey, Karen
  • Eos, Transactions American Geophysical Union, Vol. 89, Issue 17
  • DOI: 10.1029/2008EO170002

Eddy-mean flow interaction in the decadally modulating Kuroshio Extension system
journal, July 2010

  • Qiu, Bo; Chen, Shuiming
  • Deep Sea Research Part II: Topical Studies in Oceanography, Vol. 57, Issue 13-14
  • DOI: 10.1016/j.dsr2.2008.11.036

A Coupled Decadal Prediction of the Dynamic State of the Kuroshio Extension System
journal, February 2014


On the parameterization of eddy transfer Part I. Theory
journal, November 1997


Kuroshio Extension Variability and Forcing of the Pacific Decadal Oscillations: Responses and Potential Feedback
journal, December 2003

  • Qiu, Bo
  • Journal of Physical Oceanography, Vol. 33, Issue 12
  • DOI: 10.1175/2459.1

Lateral diffusivity and Lagrangian scales in the Pacific Ocean as derived from drifter data
journal, January 2003


Effect of Mesoscale Eddies on Subtropical Mode Water Variability from the Kuroshio Extension System Study (KESS)
journal, April 2007

  • Qiu, Bo; Chen, Shuiming; Hacker, Peter
  • Journal of Physical Oceanography, Vol. 37, Issue 4
  • DOI: 10.1175/JPO3097.1

Deep cyclogenesis by synoptic eddies interacting with a seamount
journal, May 2009

  • Greene, Andrew D.; Sutyrin, Georgi G.; Watts, D. Randolph
  • Journal of Marine Research, Vol. 67, Issue 3
  • DOI: 10.1357/002224009789954775

Stationary mesoscale eddies, upgradient eddy fluxes, and the anisotropy of eddy diffusivity
journal, January 2016

  • Lu, Jianhua; Wang, Fuchang; Liu, Hailong
  • Geophysical Research Letters, Vol. 43, Issue 2
  • DOI: 10.1002/2015GL067384

Kuroshio Path Variations South of Japan: Bimodality as a Self-Sustained Internal Oscillation
journal, August 2000


Estimates and Implications of Surface Eddy Diffusivity in the Southern Ocean Derived from Tracer Transport
journal, September 2006

  • Marshall, John; Shuckburgh, Emily; Jones, Helen
  • Journal of Physical Oceanography, Vol. 36, Issue 9
  • DOI: 10.1175/JPO2949.1

Eddy-induced meridional heat transport in the ocean
journal, January 2008

  • Volkov, Denis L.; Lee, Tong; Fu, Lee-Lueng
  • Geophysical Research Letters, Vol. 35, Issue 20
  • DOI: 10.1029/2008GL035490

Bjerknes-like Compensation in the Wintertime North Pacific
journal, May 2015

  • Bishop, Stuart P.; Bryan, Frank O.; Small, R. Justin
  • Journal of Physical Oceanography, Vol. 45, Issue 5
  • DOI: 10.1175/JPO-D-14-0157.1

Float-Derived Isopycnal Diffusivities in the DIMES Experiment
journal, February 2014

  • LaCasce, J. H.; Ferrari, R.; Marshall, J.
  • Journal of Physical Oceanography, Vol. 44, Issue 2
  • DOI: 10.1175/JPO-D-13-0175.1

Modulation of decadal oscillation on surface chlorophyll in the Kuroshio Extension: DECADAL MODULATION ON CHL IN THE KE
journal, January 2014

  • Lin, Pengfei; Chai, Fei; Xue, Huijie
  • Journal of Geophysical Research: Oceans, Vol. 119, Issue 1
  • DOI: 10.1002/2013JC009359

Divergent Eddy Heat Fluxes in the Kuroshio Extension at 144°–148°E. Part I: Mean Structure
journal, August 2013

  • Bishop, Stuart P.; Watts, D. Randolph; Donohue, Kathleen A.
  • Journal of Physical Oceanography, Vol. 43, Issue 8
  • DOI: 10.1175/JPO-D-12-0221.1

A Multiwavenumber Theory for Eddy Diffusivities and Its Application to the Southeast Pacific (DIMES) Region
journal, July 2015

  • Chen, Ru; Gille, Sarah T.; McClean, Julie L.
  • Journal of Physical Oceanography, Vol. 45, Issue 7
  • DOI: 10.1175/JPO-D-14-0229.1

Estimating horizontal diffusivity in the East Sea (Sea of Japan) and the northwest Pacific from satellite-tracked drifter data
journal, March 2000

  • Oh, Im Sang; Zhurbas, Victor; Park, WonSun
  • Journal of Geophysical Research: Oceans, Vol. 105, Issue C3
  • DOI: 10.1029/2000JC900002

Effect of Decadal Kuroshio Extension Jet and Eddy Variability on the Modification of North Pacific Intermediate Water
journal, March 2011


On Eddy Characteristics, Eddy Transports, and Mean Flow Properties
journal, April 1998


Comparing isopycnal eddy diffusivities in the Southern Ocean with predictions from linear theory
journal, October 2015


Eulerian and Lagrangian Statistics in the South China Sea as Deduced from Surface Drifters
journal, April 2013

  • Qian, Yu-Kun; Peng, Shiqiu; Li, Yineng
  • Journal of Physical Oceanography, Vol. 43, Issue 4
  • DOI: 10.1175/JPO-D-12-0170.1

Effects of vertical variations of thickness diffusivity in an ocean general circulation model
journal, January 2007


Transfer properties of the large-scale eddies and the general circulation of the atmosphere
journal, April 1970

  • Green, J. S. A.
  • Quarterly Journal of the Royal Meteorological Society, Vol. 96, Issue 408
  • DOI: 10.1002/qj.49709640802

Diagnostics of isopycnal mixing in a circumpolar channel
journal, December 2013


Eddy-Mean Flow Interactions in the Along-Stream Development of a Western Boundary Current Jet: An Idealized Model Study
journal, April 2011

  • Waterman, Stephanie; Jayne, Steven R.
  • Journal of Physical Oceanography, Vol. 41, Issue 4
  • DOI: 10.1175/2010JPO4477.1

Divergent Eddy Heat Fluxes in the Kuroshio Extension at 144°–148°E. Part II: Spatiotemporal Variability
journal, November 2013


Lagrangian Time Scales and Eddy Diffusivity at 1000 m Compared to the Surface in the South Pacific and Indian Oceans
journal, December 2013


Two-Dimensional Mixing, Edge Formation, and Permeability Diagnosed in an Area Coordinate
journal, June 1996


Estimating Suppression of Eddy Mixing by Mean Flows
journal, September 2012

  • Klocker, Andreas; Ferrari, Raffaele; LaCasce, Joseph H.
  • Journal of Physical Oceanography, Vol. 42, Issue 9
  • DOI: 10.1175/JPO-D-11-0205.1