Oregon State University

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Roger Samelson

Roger Samelson photo
Professor

Discipline: Physics of Oceans and Atmospheres
Office: Burt 306
Phone: 541-737-4752
Fax: 541-737-2064
Email: rsamelson@coas.oregonstate.edu
Website
Vita or Résumé (PDF)

Current Research

Education

BS, Stanford University (Physics), 1981
MS, Oregon State University Mathematics), 1987
PhD, Oregon State University (Physical Oceanography), 1987

Experience

Woods Hole Oceanographic Institution: GFD Summer Fellow, 1983; Postdoctoral Investigator, 1987-89; Assistant Scientist, 1989-93; Associate Scientist, 1993-97; Associate Scientist w/ tenure, 1997
Oregon State University: Associate Professor, 1997-2001; Professor, 2001-

Vita (html)

Publications

Books

Samelson, R. M., 2011. The Theory of Large-Scale Ocean Circulation. Cambridge University Press, New York, 193 pp. Description and Errata

Samelson, R. M., and S. Wiggins, 2006. Lagrangian Transport in Geophysical Jets and Waves. Springer-Verlag, New York, 147 pp. Description and Errata


Submitted Publications

Gaube, P., D. B. Chelton, R. M. Samelson, M. G. Schlax, and L. W. O'Neill. Satellite observations of mesoscale eddy-induced Ekman pumping.  J. Phys. Oceanogr., submitted.

Refereed Publications

Perlin, N., S.P. de Szoeke, D. B. Chelton, R. M. Samelson, E. D. Skyllingstad, and L. W. O’Neill.  Modeling the atmospheric boundary layer response to mesoscale sea-surface temperature. Mon. Wea. Rev., accepted.

Samelson, R. M., M. G. Schlax, and D. B. Chelton, 2014.  Randomness, symmetry, and scaling of mesoscale eddy lifecycles. J. Phys. Oceanogr., 44, 1012–1029, doi: 10.1175/JPO-D-13-0161.1.

Samelson, R. M, 2013. Lagrangian motion, coherent structures, and lines of persistent material strain. Ann. Rev. Mar. Sci., 5, 137-163, doi: 10.1146/annurev-marine-120710-100819.

Shaman, J., R. M. Samelson, and E. Tziperman, 2012. Complex wavenumber Rossby wave ray tracing. J. Atmos. Sci, 69, 2112-2133.

Skyllingstad, E. D., and R. M. Samelson, 2012. Baroclinic frontal instabilities and turbulent mixing in the surface boundary layer, Part 1: Unforced simulations. Journal of Physical Oceanography, 42, 1701-1716.

Chelton, D. B., P. Gaube, M. G. Schlax, J. J. Early and R. M. Samelson, 2011. The Influence of Nonlinear Mesoscale Eddies on Oceanic Chlorophyll. Science, 334, 328-332, doi: 10.1126/science.1208897.

Chelton, D. B., M. G. Schlax, and R. M. Samelson, 2011. Global observations of nonlinear mesoscale eddies. Progress in Oceanography, 91, 167-216, doi:10.1016/j.pocean.2011.01.002.

Durland, T. S., D. B. Chelton, R. A. de Szoeke, and R. M. Samelson, 2011. Modification of long equatorial Rossby wave phase speeds by zonal currents. J. Phys. Oceanogr., 41, 1077-1101.

Early, J. J., R. M. Samelson, and D. B. Chelton, 2011. The evolution and propagation of quasi-geostrophic ocean eddies. J. Phys. Oceanogr., 41, 1535-1555.

Kim, S., R. Samelson, and C. Snyder, 2011. Toward an uncertainty budget for a coastal ocean model. Monthly Weather Review, 139, 866-884.

Perlin, N., E. D. Skyllingstad, and R. M. Samelson, 2011. Coastal atmospheric circulation around an idealized cape during wind-driven upwelling studied from a coupled ocean-atmosphere model. Monthly Weather Review, 139, 809-829.

Rivas, D., and R. M. Samelson, 2011. A numerical modeling study of the upwelling source waters along the Oregon coast during 2005. J. Phys. Oceanogr., 41, 88-112, doi: 10.1175/2010JPO4327.1.

Samelson, R. M., 2011. Time-dependent adjustment in a simple model of the mid-depth meridional overturning cell. Journal of Physical Oceanography, 41, 1009-1025.

Early, J. J., J. Pohjanpelto, and R. M. Samelson, 2010. Group foliation for equations in geophysical fluid dynamics. Discrete and Continuous Dynamical Systems, Series A, 27(4), 1571–1586, doi:10.3934/dcds.2010.27.1571.

Kelly, K. A., R. J. Small, R. M. Samelson, B. Qiu, T. M. Joyce, Y.-O. Kwon, and M. F. Cronin, 2010. Western boundary currents and frontal air-sea interaction: Gulf Stream and Kuroshio Extension. J. Climate, 23, 5644–5667, DOI: 10.1175/2010JCLI3346.1.

O'Neill, L., S. K. Esbensen, N. Thum, R. M. Samelson, and D. B. Chelton, 2010. Dynamical analysis of the boundary layer and surface wind responses to small-scale SST perturbations. Journal of Climate, 23, 559-581, DOI: 10.1175/2009JCLI2662.1

Samelson, R. M., 2010. An effective-beta vector for linear planetary waves on a weak mean flow. Ocean Modelling, 32, 170-174, doi:10.1016/j.ocemod.2010.01.006. Errata

Shaman, J., R. M. Samelson, and E. Skyllingstad, 2010. Air-sea fluxes over the Gulf Stream region: atmospheric controls and trends. Journal of Climate, 23, 2651-2670, DOI: 10.1175/2010JCLI3269.1.

Kim, S., R. M. Samelson, and C. Snyder, 2009. Ensemble-based estimates of the predictability of wind-driven coastal ocean flow over topography. Monthly Weather Review, 137, 2515-2537, DOI: 10.1175/2009MWR2631.1.

Marshall, J., A. Andersson, N. Bates, W. Brown, W. Dewar, S. Doney, J. Edson, R. Ferrari, G. Forget, D. Fratantoni, M. Gregg, T. Joyce, K. Kelly, S. Lozier, R. Lumpkin, G. Maze, J. Palter, A. Plueddemann, R. Samelson, K. Silverthorne, E. Skyllingstad, F. Straneo, L. Talley, L. Thomas, J. Toole, and R. Weller, 2009. Observing the cycle of convection and restratification over the Gulf Stream and the subtropical gyre of the North Atlantic Ocean: preliminary results from the CLIMODE field campaign. Bulletin of the American Meteorological Society, 90, 1337-1350.

Samelson, R. M., 2009. A simple dynamical model of the warm-water branch of the mid-depth meridional overturning cell. Journal of Physical Oceanography, 39, 1216-1230.

Springer, S. R., R.M. Samelson, J. S. Allen, G. D. Egbert, A. L. Kurapov, R. N. Miller and J. C. Kindle, 2009. A Nested Grid Model of the Oregon Coastal Transition Zone: Simulations and Comparisons with Observations During the 2001 Upwelling Season. J. Geophys. Res., 114, C02010, doi:10.1029/2008JC004863. ScholarsArchive@OSU

Wilkinson, J.P, P. Gudmandsen, S. Hanson, R. Saldo, and R.M. Samelson, 2009. Hans Island: meteorological data from an international borderline. EOS Trans. Amer. Geophys. Union, 90, 190-191.

Durski, S. D., R. M. Samelson, J. S. Allen, and G. D. Egbert, 2008. Normal-mode instabilities of a time-dependent coastal upwelling jet. Journal of Physical Oceanography, 38, 2056–2071.

Samelson, R. M., J. S. Allen, and P. MacCready, 2008. Progress in coastal ocean modeling during CoOP. Oceanography, 21, 136-147. Note: Due to a production error, the printed version of this article contains several errors that should have been corrected in proof; please download the Oceanography on-line version or the version linked here.

Samelson, R. M., and P. L. Barbour, 2008. Low-level jets, orographic channeling, and extreme events in Nares Strait: a model-based mesoscale climatology. Monthly Weather Review, 136, 4746-4759, doi: 10.1175/2007MWR2326.1.

Wolfe, C. L., and R. M. Samelson, 2008. Singular vectors and time-dependent normal modes of a baroclinic wave-mean oscillation. Journal of the Atmospheric Sciences, 65, 875-894.

Chelton, D. B., M. G. Schlax and R.M. Samelson, 2007. Summertime coupling between sea surface temperature and wind stress in the California Current System. Journal of Physical Oceanography, 37, 495-517.

Chelton, D. B., M. G. Schlax, R.M. Samelson, and R. A. de Szoeke, 2007. Global observations of large oceanic eddies. Geophysical Research Letters, 34, L15606, doi:10.1029/2007GL030812.

Durski, S., J. S. Allen, G. D. Egbert, and R. M. Samelson, 2007. Scale evolution of finite amplitude instabilities on a coastal upwelling front. Journal of Physical Oceanography, 37, 837-854.

Perlin, N, E. Skyllingstad, R. Samelson, and P. Barbour, 2007. Numerical simulation of air-sea coupling during coastal upwelling. Journal of Physical Oceanography, 37, 2081-2093.

Samelson, R., R. Temam, C. Wang, and S. Wang, 2007. A fourth order numerical method for the planetary geostrophic equations with inviscid geostrophic balance. Numerische Mathematik, , 107(4), 669-705.

Skyllingstad, E., D. Vickers, L. Mahrt, and R. Samelson, 2007. Effects of mesoscale sea-surface temperature fronts on the marine boundary layer. Boundary Layer Meteorology, DOI 10.1007/s10546-006-9127-8.

Wolfe, C. L., and R. M. Samelson, 2007. An efficient method for recovering Lyapunov vectors from singular vectors. Tellus, 59A, 355-366.

Liu, J.-G., R. Samelson, and C. Wang, 2006. Global weak solutions of planetary geostrophic equations with inviscid geostrophic balance. Applicable Analysis, 85, 593-605, doi: 10.1080/00036810500328299.

Samelson, R. M., T. Agnew, H. Melling, and A. Münchow, 2006. Evidence for atmospheric control of sea-ice motion through Nares Strait. Geophysical Research Letters, 33, L02506, doi:10.1029/2005GL025016.

Samelson, R. M., E. D. Skyllingstad, D. B. Chelton, S. K. Esbensen, L. W. O'Neill, and N. Thum, 2006. A note on the coupling of wind stress and sea surface temperature. Journal of Climate, 19, 1557-1566.

Wolfe, C. L., and R. M. Samelson, 2006. Normal-mode analysis of a baroclinic wave-mean oscillation. Journal of the Atmospheric Sciences, 63, 2795-2812.

Bane, J. M., M. D. Levine, R. M. Samelson, S. M. Haines, M. F. Meaux, N. Perlin, P. M. Kosro, and T. Boyd, 2005. Atmospheric forcing of the Oregon coastal ocean during the 2001 upwelling season. Journal of Geophysical Research - Oceans, 110, C10S02, doi:10.1029/2004JC002653.

Choboter, P. F., R. M. Samelson, and J. S. Allen, 2005. A new solution of a nonlinear model of upwelling. Journal of Physical Oceanography, 35, 532-544.

Dewar, W. K., R. M. Samelson, and G. K. Vallis, 2005. The ventilated pool: A model of subtropical mode water. Journal of Physical Oceanography, 35, 137-150.

Gan, J., J. S. Allen, and R. M. Samelson, 2005. On open boundary conditions for a limited-area coastal model off Oregon. Part II: Response to wind forcing from a regional mesoscale atmospheric model. Ocean Modelling, 8, 155-173, 10.1016/j.ocemod.2003.12.007.

Lyman, J., D. Chelton, R. de Szoeke, and R. M. Samelson, 2005. Tropical instability waves as a resonance between equatorial Rossby waves. Journal of Physical Oceanography, 35, 232-254.

Skyllingstad, E., R. Samelson, L. Mahrt, and P. Barbour, 2005. A numerical modeling study of warm offshore flow over cool water. Monthly Weather Review, 133, 345-361.

Kuebel Cervantes, B. T., J. S. Allen, and R. M. Samelson, 2004. Lagrangian characteristics of continental shelf flows forced by periodic wind stress. Nonlinear Processes in Geophysics, 11, 3-16.

Perlin, N., R. M. Samelson, and D. B. Chelton, 2004. Scatterometer and model wind and wind stress in the Oregon - northern California coastal zone. Monthly Weather Review, 132, 2110-2129.

Samelson, R. M., 2004. Simple mechanistic models of mid-depth meridional overturning. Journal of Physical Oceanography, 34, 2096-2103.

Kuebel Cervantes, B. T., J. S. Allen, and R. M. Samelson, 2003. A modeling study of Eulerian and Lagrangian aspects of shelf circulation off Duck, North Carolina. Journal of Physical Oceanography, 33, 2070-2092.

Samelson, R. M., and C. L. Wolfe, 2003. A nonlinear baroclinic wave-mean oscillation with multiple normal-mode instabilities. Journal of the Atmospheric Sciences, 60, 1186-1199.

Samelson, R. M., R. Temam, C. Wang, and S. Wang, 2003. Surface pressure Poisson equation formulation of the primitive equations: numerical schemes. SIAM Journal of Numerical Analysis, 41, 1163-1194.

Bielli, S., P. Barbour, R. Samelson, E. Skyllingstad, and J. Wilczak, 2002. Numerical simulations of the diurnal cycle along the Oregon coast during summertime northerly flow. Monthly Weather Review, 130, 992-1008.

de Szoeke, R. A., and R. M. Samelson, 2002. The duality between the Boussinesq and non-Boussinesq hydrostatic equations of motion. Journal of Physical Oceanography, 32, 2194-2203.

Samelson, R. M., P. Barbour, J. Barth, S. Bielli, T. Boyd, D. Chelton, P. Kosro, M. Levine, E. Skyllingstad, and J. Wilczak, 2002. Wind stress forcing of the Oregon coastal ocean during the 1999 upwelling season. Journal of Geophysical Research-Oceans, 107 (C5), 10.1029/2001JC000900.

Samelson, R. M., 2001. Lyapunov, Floquet, and singular vectors for baroclinic waves. Nonlinear Processes in Geophysics, 8, 439-448.

Samelson, R. M., 2001. Periodic orbits and disturbance growth for baroclinic waves. Journal of the Atmospheric Sciences, 58, 436-450.

Samelson, R. M., and E. Tziperman, 2001. Instability of the chaotic ENSO: the growth-phase predictability barrier. Journal of the Atmospheric Sciences, 58, 3613-3625.

Samelson, R. M., R. Temam, and S. Wang, 2000. Smooth solutions and attractor dimension bounds for planetary geostrophic ocean models. Quarterly Journal of the Royal Meteorological Society, 126, 1977-1981.

Nuss, W., J. Bane, W. Thompson, T. Holt, C. Dorman, F. M. Ralph, R. Rotunno, J. Klemp, W. Skamarock, R. Samelson, A. Rogerson, C. Reason, and P. Jackson, 2000. Coastally trapped wind reversals: progress toward understanding. Bulletin of the American Meteorological Society, 81(4), 719-743.

Samelson, R. M., R. Temam, and S. Wang, 2000. Remarks on the planetary geostrophic model of gyre scale ocean circulation. Differential and Integral Equations, 13, 1-14.

Samelson, R. M., 1999. Geostrophic circulation in a rectangular basin with a circumpolar connection. Journal of Physical Oceanography, 29, 3175-3184.

Samelson, R. M., 1999. Internal boundary layer scaling in 'two-layer' solutions of the thermocline equations. Journal of Physical Oceanography, 29, 2099-2102.

Burk, S., T. Haack, and R. M. Samelson, 1999. Mesoscale simulation of supercritical, subcritical, and transcritical flow along coastal topography. Journal of the Atmospheric Sciences, 56, 2780-2795.

Samelson, R. M., 1999. Note on a baroclinic analog of vorticity defects in shear. Journal of Fluid Mechanics, 382, 367-373.

Samelson, R. M., 1999. The vertical structure of linear coastal-trapped disturbances. Monthly Weather Review, 127, 201-213.

Samelson, R. M., 1998. Large-scale circulation with locally enhanced vertical mixing. Journal of Physical Oceanography, 28, 712-726.

Samelson, R. M., R. Temam, and S. Wang, 1998. Some mathematical properties of the planetary geostrophic equations for large-scale ocean circulation. Applicable Analysis, 70, 147-173.

Brink, K. H., and Samelson, R. M., 1998. Comments on "Direct atmospheric forcing of geostrophic eddies. Part II: Coherence maps." Journal of Physical Oceanography, 28, 1003-1009.

Samelson, R. M., and G. K. Vallis, 1997. A simple friction and diffusion scheme for planetary geostrophic basin models. Journal of Physical Oceanography, 27, 186-194.

Samelson, R. M., and G. K. Vallis, 1997. Large-scale circulation with small diapycnal diffusion: the two-thermocline limit. Journal of Marine Research, 55, 223-275.

Samelson, R. M., 1997. Coastal boundary conditions and the baroclinic structure of wind-driven continental shelf currents. Journal of Physical Oceanography, 27, 2645-2662.

Samelson, R. M., and A. M. Rogerson, 1996. Life-cycle of a linear coastal trapped disturbance. Monthly Weather Review, 124(8), 1853-1863.

Samelson, R. M., and D. C. Chapman, 1995. Evolution of the instability of a mixed-layer front. Journal of Geophysical Research, 100(C4), 6743-6759.

Rogerson, A. M., and R. M. Samelson, 1995. Synoptic forcing of coastal-trapped disturbances in the marine atmospheric boundary layer. Journal of the Atmospheric Sciences, 52(11), 2025-2040.

Brown, M. G., and R. M. Samelson, 1994. Particle motion in vorticity-conserving, two-dimensional, incompressible flows. Physics of Fluids, 6(9), 2875-2876.

Samelson, R. M., and S. J. Lentz, 1994. The horizontal momentum balance in the marine atmospheric boundary layer during CODE-2. Journal of the Atmospheric Sciences, 51(24), 3745-3757.

Samelson, R. M., 1993. Linear instability of a mixed-layer front. Journal of Geophysical Research, 98(C6), 10,195-10,204.

Niiler, P. P., J. Filloux, W. T. Liu, R. M. Samelson, J. D. Paduan, and C. A. Paulson, 1993. Wind-forced variability of the deep eastern North Pacific: observations of seafloor pressure and abyssal currents. Journal of Geophysical Research, 98(C12), 22,589-22,602.

Oh, S. P., J. Pedlosky, and R. M. Samelson, 1993. Linear and finite-amplitude localized baroclinic instability. Journal of the Atmospheric Sciences, 50(16), 2772-2784.

Samelson, R. M., 1992. Surface-intensified Rossby waves over rough topography. Journal of Marine Research, 50(3), 367-384; Corrigendum, Journal of Marine Research, 56(1), 293 (1998).

Samelson, R. M., 1992. Supercritical marine layer flow along a smoothly-varying coastline. Journal of the Atmospheric Sciences, 49, 1571-1584.

Samelson, R. M., 1992. Fluid exchange across a meandering jet. Journal of Physical Oceanography, 22(4), 431-440.

Samelson, R. M., and B. Shrayer, 1991. Currents forced by stochastic winds with meridionally-varying amplitude. Journal of Geophysical Research, 96(C10), 18,425-18,429.

Pedlosky, J., and R. M. Samelson, 1991. Radiation-induced baroclinic instability. Geophysical and Astrophysical Fluid Dynamics, 58, 243-262.

Allen, J. S., R. M. Samelson, and P. A. Newberger, 1991. Chaos in a model of forced quasi-geostrophic flow over topography: An application of Melnikov's method. Journal of Fluid Mechanics, 226, 511-547.

Samelson, R. M., and J. Pedlosky, 1990. Local baroclinic instability of flow over variable topography. Journal of Fluid Mechanics, 221, 411-436.

Samelson, R. M., 1990. Evidence for wind-driven current fluctuations in the eastern North Atlantic. Journal of Geophysical Research, 95(C7), 11,359-11,368; correction, Journal of Geophysical Research, 97(C1), 821-822 (1992).

Pedlosky, J., and R. M. Samelson, 1989. Wind forcing and the zonal structure of the equatorial undercurrent. Journal of Physical Oceanography, 19(9), 1244-1254.

Samelson, R. M., 1989. Stochastically forced current fluctuations in vertical shear and over topography. Journal of Geophysical Research, 94(C6), 8207-8215.

Samelson, R. M., and R. A. de Szoeke, 1988. Semigeostrophic wind-driven thermocline upwelling at a coastal boundary. Journal of Physical Oceanography, 18(10), 1372-1383.

Samelson, R. M., and C. A. Paulson, 1988. Towed thermistor chain observations of fronts in the subtropical North Pacific. Journal of Geophysical Research, 93(C3), 2237-2246.

Samelson, R. M., and J. S. Allen, 1987. Quasi-geostrophic topographically generated mean flow over the continental margin. Journal of Physical Oceanography, 17(11), 2043-2064.

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