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RISThe Annual Rossby Wave in the Central Equatorial Pacific Ocean
Publisher: American Meteorological Society
Abstract: We attribute observed annual variations in the subthermocline thermal structure of the central equatorial Pacific to a forced gravest-meridional-mode Rossby wave. In the region between 300 and 800 m (where the Väisälä ...
A Direct Comparison of Two RDI Shipboard ADCPs: A 75-kHz Ocean Surveyor and a 150-kHz Narrow Band
Publisher: American Meteorological Society
Abstract: During a recent transit from Florida to Rhode Island, simultaneous single-ping data were recorded from two acoustic Doppler current profilers on the R/V Endeavor: an old 150-kHz narrow bandwidth (NB) model, and a new 75-kHz ...
Mixed-Layer Shear Generated by Wind Stress in the Central Equatorial Pacific
Publisher: American Meteorological Society
Abstract: Sixteen months of wind and current profile observations in the central equatorial Pacific show the response of the upper-ocean shear to local wind forcing. The shear at the ocean surface is significantly correlated with ...
The Behavior of a Barotropic Eddy on a β-Plane
Publisher: American Meteorological Society
Abstract: An experimental method for producing an isolated eddy in a laboratory tank is described, along with the simple viscous theory of the behavior of the eddy in an ordinary cylindrical tank without the ?-effect. The linear ...
The Potential Vorticity Structure of Equatorial Deep Jets
Publisher: American Meteorological Society
Abstract: The equatorial deep jets are often modeled as equatorially trapped long waves, either Kelvin or Rossby. Rossby waves perturb potential vorticity but Kelvin waves do not; therefore the potential vorticity structure of a ...
Inertial Oscillations in Geostrophic Flow: Is the Inertial Frequency Shifted by ζ/2 or by ζ?
Publisher: American Meteorological Society
Abstract: he short answer to the question posed in the title is that it depends on the frame of reference chosen to describe the motions. In the inertial limit, the frequency in a rotating frame of reference corresponds to the ...
Time-Dependent Island Rule and Its Application to the Time-Varying North Hawaiian Ridge Current
Publisher: American Meteorological Society
Abstract: Since November 1988, repeated shipboard ADCP transects have been made across the North Hawaiian Ridge Current (NHRC) north of Oahu. Prominent aspects of the NHRC transport time series include 1) a shift in late 1991 from ...
Subthermocline and Intermediate Zonal Currents in the Tropical Pacific Ocean: Paths and Vertical Structure
Publisher: American Meteorological Society
Abstract: AbstractThe mean subthermocline and intermediate zonal circulation in the tropical Pacific is investigated using a compilation of shipboard ADCP measurements and absolute geostrophic velocities constructed from a high-resolution ...
Equatorial Pacific Ocean Horizontal Velocity, Divergence, and Upwelling
Publisher: American Meteorological Society
Abstract: Upper-ocean horizontal velocity and divergence were estimated from shipboard observations taken from 1991 to 1999 in the equatorial Pacific between 170°W and 95°W. Mean transports were estimated for the zonal currents at ...
Near-Surface Frontal Zone Trapping and Deep Upward Propagation of Internal Wave Energy in the Japan/East Sea
Publisher: American Meteorological Society
Abstract: The full-depth current structure in the Japan/East Sea was investigated using direct velocity measurements performed with lowered and shipboard acoustic current Doppler profilers. Rotary spectral analysis was used to ...