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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:: Risien, Craig M. and Chelton, Dudley B.
Abstract:: Global seasonal cycles of the wind and wind stress fields estimated from the 8-yr record (September 1999–August 2007) of wind measurements by the NASA Quick Scatterometer (QuikSCAT) are presented. While this atlas, referred to here as the Scatterometer Climatology of Ocean Winds (SCOW), consists of 12 variables, the focus here...
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Full Text:: observation times. NOVEMBER 2008 R I S I E N A N D C H E L T O N 2381 FIG. 2. (a), (b) Zonal and

Creator:: Lyman, John M., Chelton, Dudley B., deSzoeke, Roland A., and Samelso, Roger M.
Abstract:: To understand the characteristics of sea surface height signatures of tropical instability waves (TIWs), a linearized model of the central Pacific Ocean was developed in which the vertical structures of the state variables are projected onto a set of orthogonal baroclinic eigenvectors. In lieu of in situ current measurements with...
Resource Type:: Article
Full Text:: appendix A). b. Single-mode projection onto the vertical eigenfunctions The vertical dependencies of the

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...
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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:: Kuebel Cervantes, B. T., Allen, J. S., and Samelson, R. M.
Abstract:: The effects of wind-forced upwelling and downwelling on the continental shelf off Duck, North Carolina, are studied through experiments with a two-dimensional numerical primitive equation model. Moored and shipboard measurements obtained during August–November 1994 as part of the Coastal Ocean Processes (CoOP) Inner Shelf Study (ISS) are used for model–data...
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Full Text:: velocities for comparison with OCTOBER 2003 2071K U E B E L C E R V A N T E S E T A L . FIG. 1. Across

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:: Durland, Theodore S., Samelson, Roger M., Chelton, Dudley B., and de Szoeke, Roland A.
Abstract:: Previously unaddressed aspects of how equatorial currents affect long Rossby wave phase speeds are investigated using solutions of the shallow-water equations linearized about quasi-realistic currents. Modification of the background potential vorticity (PV) gradient by curvature in the narrow equatorial currents is shown to play a role comparable to the Doppler...
Resource Type:: Article
Full Text:: Phase Speeds by Zonal Currents THEODORE S. DURLAND, ROGER M. SAMELSON, DUDLEY B. CHELTON, AND ROLAND A

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:: Wijesekera, H. W., Jarosz, E., Teague, W. J., Wang, D. W., Fribance, D. B., Moum, J. N., and Warner, S. J.
Abstract:: Pressure differences across topography generate a form drag that opposes the flow in the water column, and viscous and pressure forces acting on roughness elements of the topographic surface generate a frictional drag on the bottom. Form drag and bottom roughness lengths were estimated over the East Flower Garden Bank...
Resource Type:: Article
Full Text:: with a sampling rate of 1Hz. Spectra were averaged into 210 frequency bins. (b) Enlarged plot showing

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