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Wilbert Weijer

Wilbert Weijer

Phone (505) 667-7469


  • Earth and Space Sciences
  • Geoscience
  • Geophysics
  • Climate modeling
  • Computer and Computational Sciences
  • High performance computing
  • Earth and Space Sciences
  • Oceanography
  • Climate, Ocean, and Sea Ice Modeling (COSIM) project


Physical Oceanography and Climate Dynamics

My research interests involve the dynamics of the large scale ocean circulation, and the role of the ocean in the climate system. I am particularly interested in the following topics:

  • Atlantic Meridional Overturning Circulation
  • Agulhas Leakage
  • Topographically-trapped modes of ocean variability
  • Dynamics of the Southern Ocean
  • Ocean dynamics and sediment transport in the Argentine Basin.
  • Low-frequency climate variability, in particular Pacific Decadal Variability and Atlantic Multidecadal Variability


2000     Ph.D., Utrecht University, Utrecht, the Netherlands (Physical Oceanography).

1995     M.Sc., Utrecht University, Utrecht, the Netherlands (Geophysics; cum laude).

1994     M.Sc., Utrecht University, Utrecht, the Netherlands (Physical Oceanography; cum laude).

1990     B.Sc., Utrecht University, Utrecht, the Netherlands (Geophysics; with honors).


LANL Positions

Scientist 4, Los Alamos National Laboratory (since 2016)

Scientist 3, Los Alamos National Laboratory (2006-2016)


Professional Societies

American Geophysical Union (AGU)

American Meteorological Society (AMS)



Cheng, W., W. Weijer, W. M. Kim, G. Danabasoglu, S. G. Yeager, P. R. Gent, D. Zhang, J. C. H. Chiang, and J. Zhang, 2018: Can the salt-advection feedback be detected in internal variability of the Atlantic Meridional Overturning Circulation? Journal of Climate, in press.

Drake, H. F., A. K. Morrison, S. M. Griffies, J. L. Sarmiento, W. Weijer, and A. R. Gray, 2018: Lagrangian Timescales of Southern Ocean Upwelling in a Hierarchy of Model Resolutions. Geophysical Research Letters, 45(2), 891-898.

Tamsitt, V., H. F. Drake, A. K. Morrison, L. D. Talley, C. O. Dufour, A. R. Gray, S. M. Griffies, M. R. Mazloff, J. L. Sarmiento, J. Wang and W. Weijer, 2017: Spiraling pathways of global deep waters to the surface of the Southern Ocean. Nature Communications 8, 172, doi:10.1038/s41467-017-00197-0.

Weijer, W., M. Veneziani, A. Stössel, M. W. Hecht, N. Jeffery, A. Jonko, T. Hodos, and H. Wang, 2017: Local atmospheric response to an open-ocean polynya in a high-resolution climate model. Journal of Climate, 30, 1629-1641.

Biastoch, A., J. Durgadoo, A. K. Morrison, E. van Sebille, W. Weijer, and Stephen M. Griffies, 2015: Atlantic Multidecadal Oscillation covaries with Agulhas Leakage. Nature Communications, 6, 10082, doi:10.1038/ncomms10082.

Weijer, W., M. E. Maltrud, W. B. Homoky, K. L. Polzin, and L. R. M. Maas, 2015: Eddy-driven sediment transport in the Argentine Basin: is the height of the Zapiola Rise hydrodynamically controlled? Journal of Geophysical Research Oceans, 120, doi: 10.1002/2014JC010573.

Downes, S. M., W. Weijer, N. Jeffery, M. Mazloff, and J. Russell, 2015: Southern Ocean dynamics and biogeochemistry in a changing climate: Introduction and overview. Deep-Sea Research II, 114, 1-2. doi: 10.1016/j.dsr2.2015.02.013.

Weijer, W., 2015: Modal variability in the Southeast Pacific Basin: Energetics of the 2009 event. Deep-Sea Research II, 114, 3-11, doi: 10.1016/j.dsr2.2012.10.002.

van Sebille, E., P. Scussolini, J. Durgadoo, F. Peeters, A. Biastoch, W. Weijer, C. Turney, C. Paris, and R. Zahn, 2015: Ocean currents generate large footprints in marine palaeoclimate proxies. Nature Communications, 6, 6521, doi:10.1038/ncomms7521.

Weijer, W., and E. van Sebille, 2014: Impact of Agulhas Leakage on the Atlantic overturning circulation in the CCSM4. Journal of Climate, 27, 101-110.

den Toom, M., H. A. Dijkstra, W. Weijer, M. W. Hecht, M. E. Maltrud, and E. van Sebille, 2014: Sensitivity of a strongly eddying global ocean to North Atlantic freshwater perturbations. Journal of Physical Oceanography, 44, 464-481.

Weijer, W., V. V. Zharkov, D. Nof, H. A. Dijkstra, W. P. M. de Ruijter, A. Terwisscha van Scheltinga, and F. Wubs, 2013: Agulhas ring formation as a barotropic instability of the retroflection. Geophysical Research Letters, 40, 5435-5438, doi:10.1002/2013GL057751.

Weijer, W., E. Muñoz, N. Schneider, and F. Primeau, 2013: Pacific Decadal Variability: Paced by Rossby Basin Modes? Journal of Climate, 26, 1445-1456.

Weijer, W., M. E. Maltrud, M. W. Hecht, H. A. Dijkstra, and M. Kliphuis, 2012: Response of the Atlantic Ocean circulation to Greenland ice sheet melting in a strongly-eddying ocean model. Geophysical Research Letters, 39, L09606, doi:10.1029/2012GL051611.

Weijer, W., B. M. Sloyan, M. E. Maltrud, N. Jeffery, M. W. Hecht, C. A. Hartin, E. van Sebille, I. Wainer, and L. Landrum, 2012: The Southern Ocean and its Climate in CCSM4. Journal of Climate, 25, 2652-2675.

Muñoz, E., W. Weijer, S. Grodsky, S. C. Bates, and I. Wainer, 2012: Mean and variability of the tropical Atlantic Ocean in the CCSM4. Journal of Climate, 25, 4860-4882.

Muñoz, E., B. Kirtman, and W. Weijer, 2011: Varied representation of the Atlantic meridional overturning across multidecadal ocean reanalyses. Deep Sea Research, 58, 1848-1857.

Zharkov, V., D. Nof and W. Weijer, 2012: Retroflection from a double slanted coastline – a model for the Agulhas leakage variability. Ocean Science, 6, 997-1011.

Weijer, W., 2012: An almost-free barotropic mode in the Australian-Antarctic Basin. Geophysical Research Letters, 37, L10602, doi: 10.1029/2010GL042657.

Weijer, W., S. T. Gille and F. Vivier, 2009: Modal decay in the Australia-Antarctic Basin. Journal of Physical Oceanography, 39, 2893-2909.

Evans, K. J., D. W. I. Rouson, A. Salinger, M. A. Taylor, W. Weijer and J. B. White, 2009: A scalable and adaptable solution framework within components of the Community Climate System Model. Lecture Notes in Computer Science, 5545, 332-341.

Weijer, W., 2008: Normal Modes of the Mascarene Basin. Deep-Sea Research I, 55, 128-136.

Weijer, W., S. T. Gille, F. Vivier and H. A. Dijkstra, 2007: Multiple oscillatory modes of the Argentine Basin. Part I: Statistical analysis. Journal of Physical Oceanography, 37, 2855-2868.

Weijer, W., S. T. Gille, F. Vivier and H. A. Dijkstra, 2007: Multiple oscillatory modes of the Argentine Basin. Part II: The spectral origin of basin modes. Journal of Physical Oceanography, 37, 2869-2881.

Weijer, W., and S. T. Gille, 2005: Energetics of wind-driven barotropic variability in the Southern Ocean. Journal of Marine Research, 63, 1101-1125.

Weijer, W., and S. T. Gille, 2005: Adjustment of the Southern Ocean to wind forcing on synoptic time scales. Journal of Physical Oceanography, 35, 2076-2089.

Weijer, W., 2005: High-frequency wind forcing of a channel model of the ACC: Normal mode excitation. Ocean Modelling, 9, 31-50.

Dijkstra, H. A., and W. Weijer, 2005: Stability of the global ocean circulation: basic bifurcation diagrams. Journal of Physical Oceanography, 35, 933-948.

Dijkstra, H. A., L. A. te Raa and W. Weijer, 2004: A systematic approach to determine thresholds of the ocean's thermohaline circulation. Tellus, 56A, 362-370.

Dijkstra, H. A., and W. Weijer, 2003: Stability of the global ocean circulation: the connection of equilibria in a hierarchy of models. Journal of Marine Research, 61, 725-743.

Weijer, W., H. A. Dijkstra, H. Oksuzoglu, F. W. Wubs and A. C. de Niet, 2003: A fully-implicit model of the global ocean circulation. Journal of Computational Physics, 192, 452-470.

Dijkstra, H. A., W. Weijer and J. D. Neelin, 2003: Imperfections of the three-dimensional thermohaline circulation: Hysteresis and unique-state regimes. Journal of Physical Oceanography, 33, 2796-2814.

Weijer, W., and H. A. Dijkstra, 2003: Multiple oscillatory modes of the global ocean circulation. Journal Physical Oceanography, 33, 2197-2213.

Weijer, W., W. P. M. de Ruijter, A. Sterl and S. S. Drijfhout, 2002: Response of the Atlantic overturning circulation to South Atlantic sources of buoyancy. Global and Planetary Change, 34, 293-311.

Weijer, W., and H. A. Dijkstra, 2001: A bifurcation study of the three-dimensional thermohaline ocean circulation: the double-hemispheric case. Journal of Marine Research, 59, 599-631.

Weijer, W., W. P. M. de Ruijter and H. A. Dijkstra, 2001: Stability of the Atlantic overturning circulation: Competition between Bering Strait freshwater flux and Agulhas heat and salt sources. Journal of Physical Oceanography, 31, 2385-2402.

Weijer, W., W. P. M. de Ruijter, H. A. Dijkstra and P. J. van Leeuwen, 1999: Impact of interbasin exchange on the Atlantic overturning circulation. Journal of Physical Oceanography, 29, 2266-2284.

De Ruijter, W. P. M., A. Biastoch, S. S. Drijfhout, J. R. E. Lutjeharms, R. P. Matano, T. Pichevin, P. J. van Leeuwen and W. Weijer, 1999: Indian-Atlantic inter-ocean exchange: Dynamics, estimation and impact. Journal of Geophysical Research, 104, 20885-20910.