Independent Research Fellow
Since June 2014, I have been based at BAS as a NERC Independent Research Fellow. My principal research interest concerns the mixing of warm waters on polar ocean shelves and the impact of these processes on the stability of the cryopshere around both Antarctica and Greenland. My collaborators at BAS include Prof. Michael Meredith and Dr. Hugh Venables. I also have a number of external partners from the University of Southampton, NOC Liverpool and the Scottish Association of Marine Science.
Prior to my move to BAS, I was heavily involved in understanding the rates and mechanisms of Southern Ocean mixing, through my postdoctoral work within the Diapycnal and Isopycnal Mixing Experiment in the Southern Ocean (DIMES) under the leadership of Prof. Alberto Naveira Garabato (University of Southampton). I have also been heavily involved in understanding deep water pathways on the East Greenland shelves through work at Woods Hole Oceanographic Institution.
Physical oceanography, particularly in the polar regions
Ocean turbulence and mixing
Mesoscale-internal wave interactions
Brearley, J.A., Sheen, K.L., Naveira Garabato, A.C., Smeed, D.A., Speer, K.G., Thurnherr, A., Meredith, M.P., and Waterman, S.N. (2014). Deep boundary current disintegration in Drake Passage, Geophysical Research Letters, 41 (1), 121-127 (doi: 10.1002/2013GL058617).
Brearley, J.A., Sheen, K.L., Naveira Garabato, A.C., Smeed, D.A. and Waterman, S.N. (2013). Eddy-induced modulation of turbulent dissipation over rough topography in the Southern Ocean, Journal of Physical Oceanography, 43, 2288–2308.
Sheen, K.L., Brearley, J.A., Naveira Garabato, A.C., Waterman, S.N., Smeed, D.A., Ledwell, J.R., Meredith, M.P., St Laurent, L., Thurnherr, A., Toole, J.M. and Watson, A.J. (2013). Rates and mechanisms of turbulent dissipation and mixing in the Southern Ocean. Journal of Geophysical Research: Oceans, 118, (6), 2774-2792. (doi:10.1002/jgrc.20217).
Brearley, J.A., Pickart, R.S., Valdimarsson, H., Jonsson, S., Schmitt, R.W. and Haine, T.W.N. (2012). The East Greenland boundary current south of Denmark Strait. Deep Sea Research I, 63, 1–19.
Sheen, K.L., Naveira Garabato, A.C., Brearley, J.A., Meredith, M.P., Polzin, K.L., Smeed, D.A., Forryan, A., King, B.A., Sallée, J.B., St. Laurent, L., Ledwell, J.R., Thurnherr, A.M., Toole, J.M., Waterman, S. and Watson, A.J. (2014). Changes in Southern Ocean abyssal mixing on climatic timescales, Nature Geoscience, in press.
Sevellec, F., Naveira Garabato, A.C., Brearley, J.A. and Sheen, K.L. (2014). Vertical flow in the Southern Ocean estimated from individual moorings, Journal of Physical Oceanography, submitted.
Sheen, K.L., Brearley, J.A., Naveira Garabato, A.C., Smeed, D.A., L. St. Laurent, M.P. Meredith and S. Waterman (2014). Modification of turbulent dissipation rates by a deep Southern Ocean eddy, Geophysical Research Letters, submitted.
Mackay, N., Watson, A., Messias, M-J. Sheen, K.L., Brearley, J.A., Naveira Garabato, A.C., Ledwell, J., Meijers, A. and St Laurent, L. (2013). Diapycnal mixing in Drake Passage as diagnosed by the DIMES tracer, Journal of Physical Oceanography, submitted.
Gille, S.T., Ledwell, J., Naveira Garabato, A., Speer, K., Balwada, D., Brearley, A., Girton, J., Griesel, A., Ferrari, R., Klocker, A., LaCasce, J., Lazarevich, P., Mackay, N., Meredith, M. P., Messias, M-J., Owens, B., Sallee, J-B., Sheen, K.L., Shuckburgh, E., Smeed, D.A., St Laurent, L.C., Toole, J.M., Watson, A.J., Wienders, N. and Zajaczkovski, U. (2012). The diapycnal and isopycnal mixing experiment: a first assessment. CLIVAR Exchanges, 58(17(1)), 46–48.
Bourke, M.C., Haas, W.R., Brearley, J.A. and Viles, H.A. (2007). Fluvial features, in Bourke, M.C. and Viles, H.A. (eds.) A Photographic Atlas of Rock Breakdown Features in Geomorphic Environments, Planetary Science Institute, Tucson.
Sévellec, F., Naveira Garabato, A. C., Brearley, J. A., Sheen, K. L.. (2015) Vertical flow in the Southern Ocean estimated from individual moorings. Journal of Physical Oceanography. doi:10.1175/JPO-D-14-0065.1