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Filtering by: Creator Pool, R. R. Remove constraint Creator: Pool, R. R. Has journal sim Journal of Physical Oceanography Remove constraint Has journal sim: Journal of Physical Oceanography

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  • Time-Dependent Adjustment in a Simple Model of the Mid-Depth Meridional Overturning Cell

    Creator:
    Samelson, R. M.
    Abstract:
    A recently proposed reduced-gravity model of the warm-water branch of the middepth meridional overturning circulation in a rectangular basin with a circumpolar connection is extended to include time dependence. The model describes the balance between gain of warm water through northward Ekman advection across the circumpolar current, loss of warm...
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    of the Mid-Depth Meridional Overturning Cell R. M. SAMELSON College of Oceanic and Atmospheric

  • A Simple Dynamical Model of the Warm-Water Branch of the Middepth Meridional Overturning Cell

    Creator:
    Samelson, R. M.
    Abstract:
    A reduced-gravity model is presented of the warm-water branch of the middepth meridional overturning circulation in a rectangular basin with a circumpolar connection. The model describes the balance between production of warm water by Ekman advection across the circumpolar current, dissipation of warm water by eddy fluxes southward across the...
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    Branch of the Middepth Meridional Overturning Cell R. M. SAMELSON College of Oceanic and Atmospheric

  • Internal Boundary Layer Scaling in “Two Layer” Solutions of the Thermocline Equations

    Creator:
    Samelson, R. M.
    Abstract:
    The diffusivity dependence of internal boundary layers in solutions of the continuously stratified, diffusive thermocline equations is revisited. If a solution exists that approaches a two-layer solution of the ideal thermocline equations in the limit of small vertical diffusivity kᵥ, it must contain an internal boundary layer that collapses to...
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    phoc_29_914.2099_2102 AUGUST 1999 2099N O T E S A N D C O R R E S P O N

  • Simple Mechanistic Models of Middepth Meridional Overturning

    Creator:
    Samelson, R. M.
    Abstract:
    Two idealized, three-dimensional, analytical models of middepth meridional overturning in a basin with a Southern Hemisphere circumpolar connection are described. In the first, the overturning circulation can be understood as a “pump and valve” system, in which the wind forcing at the latitudes of the circumpolar connection is the pump...
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    phoc_34_904.2096_2103.tp 2096 VOLUME 34J O U R N A L O F P H Y S I C A

  • Geostrophic Circulation in a Rectangular Basin with a Circumpolar Connection

    Creator:
    Samelson, R. M.
    Abstract:
    A simple theory is presented for steady geostrophic circulation of a stratified fluid in a rectangular basin with a circumpolar connection. The interior flow obeys the β-plane Sverdrup vorticity balance, and the circulation is closed by geostrophic boundary currents. The circulation is forced by surface thermal gradients and wind-driven Ekman...
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    R R E S P O N D E N C E q 1999 American Meteorological Society Geostrophic Circulation in a

  • Large-Scale Circulation with Locally Enhanced Vertical Mixing

    Creator:
    Samelson, R. M.
    Abstract:
    The influence of localized regions of intensified vertical mixing on the stratification and circulation in a large-scale ocean model is investigated with idealized numerical experiments. Numerical solutions are obtained of a closed-basin, single-hemisphere ocean model based on the planetary geostrophic equations. Mesoscale eddy effects are minimized, and vertical mixing at...
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    28_302.712_726 712 VOLUME 28J O U R N A L O F P H Y S I C A L O C E A N

  • On the Wind-Driven Circulation of the South Pacific Ocean

    Creator:
    de Szoeke, R. A.
    Abstract:
    A layered model of the study circulation in the South Pacific Ocean is constructed along the lines of Luyten, Pedlosky and Stommel, and driven by the mean annual wind stress distributions computed by Hellerman and Rosenatein. The results of the model agree quite well with published maps of topography of...
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    Article

  • Modeling Bottom Mixed Layer Variability on the Mid-Oregon Shelf during Summer Upwelling

    Creator:
    Kurapov, A. L., Allen, J. S., Egber, G. D., and Miller, R. N.
    Abstract:
    Results from a model of wind-driven circulation are analyzed to study spatial and temporal variability in the bottom mixed layer (BML) on the mid-Oregon shelf in summer 2001. The model assimilates acoustic Doppler profiler velocities from two cross-shore lines of moorings 90 km apart to provide improved accuracy of near-bottom...
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    during Summer Upwelling A. L. KURAPOV, J. S. ALLEN, G. D. EGBERT, AND R. N. MILLER College of Oceanic

  • A Numerical Modeling Study of the Upwelling Source Waters along the Oregon Coast during 2005

    Creator:
    Rivas, David and Samelson, R. M.
    Abstract:
    Regional ocean circulation along the Oregon coast is studied numerically for forcing fields derived from year 2005 and climatological-mean conditions. The primary object is to study directly the Lagrangian pathways by which fluid arrives in the Oregon upwelling zone. Roughly half of the upwelling fluid is found to arrive in...
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    Source Waters along the Oregon Coast during 2005 DAVID RIVAS* AND R. M. SAMELSON College of Oceanic and

  • Low-Frequency Baroclinic Waves off Coastal Boundaries

    Creator:
    Grimshaw, R. and Allen, J. S.
    Abstract:
    The behavior of low-frequency baroclinic Rossby wave motion in the vicinity of coastal boundaries is investigated using linearized modulated wave theory in a stratified, constant-depth, equatorial β-plane ocean. A primary objective is to obtain an equation that describes large-scale, low-frequency pressure fluctuations along variable geometry ocean boundaries at all latitudes...
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