Index Catalog // ScholarsArchive@OSU

Creator:: de Szoeke, Roland A. and Chelton, Dudley B.
Abstract:: A mechanism by which long planetary waves in the ocean may propagate significantly faster than the classical long baroclinic Rossby waves is investigated. The mechanism depends on the poleward thickening of intermediate density layers and the concomitant thinning of near-surface and deep layers. These features of the mass distribution are...
Resource Type:: Article
Full Text:: Planetary Waves by Homogeneous Potential Vorticity Layers ROLAND A. DE SZOEKE AND DUDLEY B. CHELTON

Creator:: Killworth, Peter D., Chelton, Dudley B., and de Szoeke, Roland A.
Abstract:: Planetary or Rossby waves are the predominant way in which the ocean adjusts on long (year to decade) timescales. The motion of long planetary waves is westward, at speeds ≥1 cm s⁻¹ . Until recently, very few experimental investigations of such waves were possible because of scarce data. The advent...
Resource Type:: Article
Full Text:: , (b) the theory in this paper including a baroclinic mean east–west velocity, and (c) in- cluding the

Creator:: Mestas-Nuñez, Alberto M., Chelton, Dudley B., and De Szoeke, Roland A.
Abstract:: Seasat scatterometer and altimeter data are analyzed to investigate time-dependent Sverdrup dynamics in the Southern Ocean (40°S to 60°S) over seasonal time scales. Sverdrup dynamics are shown to be inadequate to describe the circulation in the South Atlantic and Indian oceans. The Sverdrup circulation in the South Pacific is reasonable...
Resource Type:: Article

Creator:: Chelton, Dudley B., deSzoeke, Roland A., Schlax, Michael G., El Naggar, Karim, and Siwertz, Nicolas
Abstract:: Global 1° × 1° climatologies of the first baroclinic gravity-wave phase speed c¹ and the Rossby radius of deformation λ1 are computed from climatological average temperature and salinity profiles. These new atlases are compared with previously published 5° × 5° coarse resolution maps of λ₁ for the Northern Hemisphere and...
Resource Type:: Article
Full Text:: shown in section b of appendix A that an ap- proximate solution for cm can be obtained by the WKB method

Creator:: de Szoeke, Roland A.
Abstract:: A layered model of steady geostrophic ocean circulation driven by wind stress and buoyancy flux at the surface is derived. Potential vorticity, or thickness, of the two near-surface layers is driven by Ekman pumping and buoyancy pumping. The latter is represented as a flow of mass proportional to the modified...
Resource Type:: Article

Creator:: Witter, Donna L. and Chelton, Dudley B.
Abstract:: Motivated by satellite altimeter observations of enhanced sea level variability near steep topographic slopes in the Southern Ocean, effects of topography on the spatial distribution of mesoscale eddies and on eddy–mean flow interaction are investigated using a two-layer, wind-forced, quasigeostrophic channel model. The principal topography, a zonal ridge with a...
Resource Type:: Article
Full Text:: ] 2 6Q 5 J(Q , c ) 2 c ¹ c 2 A ¹ c , (1b)2 2 2 b 2 6 n]t where Qn, the quasigeostrophic potential

Creator:: de Szoeke, Roland A.
Abstract:: An improved bound is obtained for the radius of the semicircle in the complex plane containing the complex phase speed of baroclinically unstable plane wave disturbances. In the limit of long waves, this bound contains a term increasing with β and decreasing with the mean stratification (i.e., decreasing with the...
Resource Type:: Article
Full Text:: contains a term increasing with b and decreasing with the mean stratification (i.e., decreasing with the

Creator:: Chan, Ngai Hang, Kadane, Joseph B., Miller, Robert N., and Palma, Wilfredo
Abstract:: Kaiman filter theory and autoregressive time series are used to map sea level height anomalies in the tropical Pacific. Our Kalman filters are implemented with a linear state space model consisting of evolution equations for the amplitudes of baroclinic Kelvin and Rossby waves and data from the Pacific tide gauge...
Resource Type:: Article

Creator:: de Szoeke, Roland A.
Abstract:: The evolution of the covariance of two tracers involves a quantity called codissipation, proportional to the covariance of the gradients of the two tracers, and analogous to the dissipation of tracer variance. The evolution of the variance of a composite tracer—a linear combination of two simple, primary tracers—depends on the“composite...
Resource Type:: Article
Full Text:: slope m 5 ]C1 /]C2 for (a) small codissipation, |r| , r0; (b) large codissipation, |r| . r0; and (c

Creator:: Chelton, Dudley B., Mestas-Nuñez, Alberto M., and Freilich, Michael H.
Abstract:: Three months of vector wind observations from the Seasat-A satellite scatterometer (SASS) are used to construct gridded fields of monthly average wind stress and wind stress curl over the global ocean. These fields are examined to identify features either poorly resolved or not present in wind stress fields constructed from...
Resource Type:: Article

ScholarsArchive@OSU