• Stefanie Mack

    Oceanographer, Modeler, Postdoc.

  • About Me

    I'm a planner with a love for data analysis. I hate setting goals, as I fear they may limit my choices and possibilities. I make decisions quickly and confidently, but put them off until the last minute so I never miss an opportunity. Surprises are the worst - I prefer to have all the information possible about any subject I'm diving into, from job opportunities to memorizing directions to lifestyle choices. I completely enjoyed my one-time three week research experience at sea, but prefer to do my work with the aid of a computer - processing data or running models. One of my best talents is appearing as a normal, non-scientist person, and explaining science concepts to anyone. I make good use of this skill in my blog, Just Swimmingly.


    I'm currently a Postdoctoral Research Associate at the Applied Physics Laboratory, University of Washington, working on regional ocean models of Antarctic Shelf Seas with a focus on ocean-ice shelf interactions.


    lines of Fortran code in ROMS

    25+ TB

    of simulation output

    6+ years

    Linux & Matlab experience


    lines of Matlab code written

  • Research Projects

    Current & past projects

    Iron Transport Pathways

    As part of my dissertation work, I use passive tracer dyes in a regional ocean model to track iron sources and how they vary with tides and mesoscale eddies. This modeling work supports a larger project: "Processes Regulating Iron Supply at the Mesoscale - Ross Sea (PRISM-RS)". Resulted in several conference presentations, three co-authored papers, one first author paper.

    Tides & Sea Ice

    I used time series analysis and developed a new method to quantify, using satellite observations, how tidal forcing affects sea ice concentration in the Ross Sea, Antarctica. Resulted in many conference presentations, a poster award, and a first-author paper.

  • Publications

    All Publications

    Mack, S.L, M.S. Dinniman, D.J. McGillicuddy Jr., P.N. Sedwick, J.M. Klinck (2016), Dissolved iron transport pathways in the Ross Sea: Influence of tides and mesoscale eddies in a regional ocean model. Journal of Marine Systems, in press.


    D.J. McGillicuddy, Jr., P.N. Sedwick, M.S. Dinniman, K.R. Arrigo, T.S. Bibby, B.J.W. Greenan, E.E. Hofmann, J.M. Klinck, W.O. Smith, Jr., S.L. Mack, C.M. Marsay, B.M. Sohst, G.L. van Dijken (2015), Iron supply and demand in an Antarctic shelf ecosystem, Geophys. Res. Lett., 42, 8088-8097


    Kustka, A., J.T. Kohut, A. White, P.J. Lam, A.J. Milligan, M.S. Dinniman, S.L. Mack, E. Hunter, M. Hiscock, W.O. Smith, Jr., C.I. Measures (2015), The role of Modified Circumpolar Deep Water as an iron source to productive mid-summer phytoplankton in the Ross Sea, Deep Sea Res. I, 105, 171-185


    F.D. Becchetti, S. Mack, W.R. Robinson, M. Ojaruega (2015), Colliding nuclei to colliding galaxies: Illustrations using a simple colliding liquid-drop apparatus, Am. J. Phys., 83(10), 846-856.


    Marsay, C. M., P. N. Sedwick, M.S. Dinniman, P.M. Barrett, S.L. Mack, & D.J. McGillicuddy Jr. (2014). Estimating the benthic efflux of dissolved iron on the Ross Sea continental shelf. Geophysical Research Letters, 41(21), 7576-7583.


    Mack, S., L. Padman, & J. Klinck (2013). Extracting tidal variability of sea ice concentration from AMSR‐E passive microwave single‐swath data: a case study of the Ross Sea. Geophysical Research Letters, 40(3), 547-552.

  • Presentations

    *Invited speaker

    Mack, S. Influence of tides and mesoscale eddies in the Ross Sea - results from a regional ocean model, oral presentation, PODS IX, Honolulu, HI, October 9-13, 2016


    Mack, S. M. Dinniman, J. Klinck, P. Sedwick, D. McGillicuddy, Iron transport pathways in the Ross Sea: Physical processes affecting the supply of dFe in a regional ocean model, oral presentation, Ocean Sciences Meeting, New Orleans, LA, February 21-26, 2016


    Mack, S. M. Dinniman, J. Klinck, Effect of tides and eddies on Ross Ice Shelf basal melt from a regional ocean model, poster presentation, 26 IUGG General Assembly, Prague, Czech Republic, June 22-July 2, 2015


    Mack, S., M. Dinniman, B. Greenan, S. Springer, J. Klinck, Role of Tidally-Induced Mixing in the Ross Sea, poster presentation, Ocean Sciences Meeting, Honolulu, HI, February 23-28, 2014

    Mack, S. Tidally forced mesoscale variability in the Ross Sea, Antarctica, poster presentation, Graduate Climate Conference, Woods Hole, MA, November 1-3, 2013

    *Mack, S. Tidal effects in the Ross Sea: A look at the mesoscale using satellite data and models, invited presentation, AOCD Seminar Series, Yale, New Haven, CT, October 31, 2013


    Mack, S., L. Padman, S. Springer, M. Dinniman, J. Klinck, Sea ice variability in the Ross Sea forced by tides: Satellite observations and modeling, poster presentation, AMS Polar Meteorology and Oceanography, Seattle, WA, April 29 – May 1, 2013

    Best Student Poster award; Dorothy Brown-Smith departmental travel award received.

    Mack, S., L. Padman, S. Springer, M. Dinniman, J. Klinck, Sea ice variability in the Ross Sea forced by tides: Satellite observations and modeling, poster presentation, Polar Marine Science Gordon Research Conference & Seminar, Ventura, CA, March 9-15, 2013
    Student travel grant provided by the DOE.

    *Mack, S., Tides and sea ice in the Ross Sea: Investigations using satellite data and models, invited presentation, CCPO seminar series, ODU, Norfolk, VA, February 18, 2013

    Mack, S., S. Springer, M. Dinniman, L. Padman, J. Klinck, Diurnal tidal effects on sea ice concentration in the Ross Sea from AMSR-E satellite data and a regional ocean model, oral presentation, SCAR, Portland, OR, July 16-19, 2012

    Mack, S., J.M. Klinck, and L. Padman, Observing a diurnal tidal effect on sea ice concentration in the Ross Sea using AMSR-E satellite data, poster presentation, 2012 Ocean Sciences Meeting, Salt Lake City, UT, February 20-24, 2012

  • Experience

    & Skills

    Research Experience

    Research Associate

    Future of Ice Postdoc Fellowship

    University of Washington

    Supervisor: Dr. Ian Joughin



    Graduate Research Assistant

    Old Dominion University

    Advisor: Prof. John Klinck



    Research Experiences for Undergraduates

    College of William & Mary

    Advisor: Dr. Silvina Pagola

    Summer 2009


    Research Experiences for Undergraduates

    University of Michigan

    Advisor: Prof. Fred Becchetti

    Summer 2008


    The Oceanography Society

    Student Council Representative, 2016-2019


    Blue Crab Bowl

    Volunteer Official - 2011, 2013-2016



    "Got a climate change question? Ask a scientist!" booth - December 2015 Climate Rally


    Session Co-Convener

    IUGG/IACS - June 2015


    Field Experience

    R/V Hugh R. Sharp - 2014


    Tidewater Science and Engineering Fair

    Volunteer Judge - 2014


    Graduate Student Organization

    Vice President, 2011-2012


    • Unix/Linux
    • Matlab
    • ROMS (ocean modeling)
    • HPC/parallel clusters
    • Fortran
    • Time series analysis
    • Data analysis
    • Netcdf/hdf data files
    • Blogging


    • American Meteorological Society (AMS)
    • American Geophysical Union (AGU)
    • Association of Polar Early Career Scientists (APECS)
    • The Oceanography Society (TOS)
    • Golden Key International Honour Society
    • PODS IX Participant
    • Sigma Pi Sigma
  • Education

    Old Dominion University

    PhD Oceanography, 2016

    Old Dominion University


    Dissertation title: "Influence of tides and mesoscale eddies in the Ross Sea"

    Defended: June 10, 2016


    Advisor: Prof. John Klinck

    Westminster College, PA

    BS Physics, 2010

    Magna cum laude, mathematics minor


    Activities: Society of Physics Students, Sigma Pi Sigma, Geek Week, Resident Assistant

    Senior project on measuring light pollution on campus.