Oregon State University

College of Earth, Ocean, and Atmospheric Sciences

Physics of Oceans and Atmospheres

Roger M. Samelson

Coastal Ocean and Atmosphere

The physics of the coastal ocean and atmosphere, and the processes that couple them, are of particular interest to me and to many of my colleagues at CEOAS.

coastal Coastal upwelling, through which deep, nutrient-rich waters are raised to the surface at the coast by the action of the wind, is one such process, of fundamental importance in the coastal ocean. However, our understanding of basic elements of the physics of coastal upwelling -- such as the source locations, and pathways to the surface, of upwelling waters -- remains poor. Postdoctoral investigator David Rivas and I have been studying this process using numerical simulations of Oregon coastal circulation. An example, from David's work, of the Lagrangian pathways of upwelling fluid parcels during the anomalous upwelling year of 2005 is shown in the figure at right.


My recent research has also focused on air-sea interaction and the coupling between wind stress and sea surface temperature in the coastal zone. For example, Perlin et al. (JPO, 2007) find that in simulations of coastal upwelling using a coupled ocean-atmosphere model, wind stress over the inner shelf may be reduced by half by the interaction of the oceanic and atmospheric surface boundary layers.

Links

Oregon Coastal Ocean Observing System
Experimental Research Product - Pilot Forecast Model: Oregon Coastal Ocean Simulation System
Coastal Ocean Advances in Shelf Transport (COAST - NSF/CoOP)

Recent Publications

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.

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.

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

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 on my publications page.

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.

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.

publications